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Zhao Q, Wang Y, Liang T, Nie W, Xue P, Cheng J. Characteristics of Peripheral Retinal Refraction and Its Role in Children with Different Refractive States. J Ophthalmol 2024; 2024:7712516. [PMID: 39149699 PMCID: PMC11326877 DOI: 10.1155/2024/7712516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 06/22/2024] [Accepted: 07/04/2024] [Indexed: 08/17/2024] Open
Abstract
Introduction Peripheral retinal refraction plays a crucial role in myopia, but the specific mechanism is not clear. We refined the retinal partitions to explore the characteristics of peripheral retinal refraction and its role in emmetropic, low, and moderate myopic children aged 6 to 12 years. Methods A total of 814 subjects (814 eyes) were enrolled in the study. The participants were divided into three groups according to the central spherical equivalent refraction (SER), which were emmetropia group (E), low myopia group (LM) and moderate myopia group (MM). Multispectral refractive topography (MRT) was used to measure the retinal absolute and relative refractive difference value (RDV) in different regions. The range was divided into superior, inferior, temporal, and nasal RDV (SRDV, IRDV, TRDV, and NRDV) on the basis of several concentric circles extending outward from the macular fovea (RDV15, RDV30, RDV45, RDV30-15, RDV45-30, and RDV-45). Kruskal-Wallis test was used to analyze the differences of peripheral refraction for all the regions among the three groups. Spearman rank correlation was performed to explore correlations between SER and RDV, axial length (AL) and RDV. Results The absolute value of RDV decreased with increasing degree of myopia in all regions (P < 0.01). Subjects with different refractive degrees had different relative value of RDV. In nasal position within 45° and temporal position within 30°, the peripheral retina exhibited significantly different relative hyperopic refractive status among Group E, Group LM, and Group MM (P < 0.05). SER was negatively correlated with NRDV within 30° (especially in the range of NRDV30-15) (r = -0.141, P < 0.01), positively correlated with TRDV within 15° (r = 0.080, P = 0.023), and not significantly correlated with SRDV and IRDV when the retina was divided into four parts. AL was positively correlated with NRDV within 30° (especially in the range of NRDV30-15) (r = 0.109, P = 0.002), negatively correlated with TRDV within 15° (r = -0.095, P = 0.007). Conclusions The peripheral defocus has significant implications for the genesis of myopia. The peripheral defocus of the horizontal direction, especially within the range of NRDV30, has greater effect on the development of myopia in children. Higher NRDV30 is associated with lower SER and longer AL.
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Affiliation(s)
- Qi Zhao
- Shanxi Aier Eye Hospital Aier Eye Hospital Group, Changsha, China
| | - Yanhua Wang
- Shanxi Aier Eye Hospital Aier Eye Hospital Group, Changsha, China
- Aier Eye Hospital Jinan University, Guangzhou, China
| | - Tiangang Liang
- Shanxi Aier Eye Hospital Aier Eye Hospital Group, Changsha, China
| | - Weixiang Nie
- Shanxi Aier Eye Hospital Aier Eye Hospital Group, Changsha, China
| | - Pei Xue
- Shanxi Aier Eye Hospital Aier Eye Hospital Group, Changsha, China
| | - Jie Cheng
- Shanxi Aier Eye Hospital Aier Eye Hospital Group, Changsha, China
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Wang K, Han G, Hao R. Advances in the study of the influence of photoreceptors on the development of myopia. Exp Eye Res 2024; 245:109976. [PMID: 38897270 DOI: 10.1016/j.exer.2024.109976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 06/12/2024] [Accepted: 06/16/2024] [Indexed: 06/21/2024]
Abstract
This review examines the pivotal role of photoreceptor cells in ocular refraction development, focusing on dopamine (DA) as a key neurotransmitter. Contrary to the earlier view favoring cone cells, recent studies have highlighted the substantial contributions of both rod and cone cells to the visual signaling pathways that influence ocular refractive development. Notably, rod cells appeared to play a central role. Photoreceptor cells interact intricately with circadian rhythms, color vision pathways, and other neurotransmitters, all of which are crucial for the complex mechanisms driving the development of myopia. This review emphasizes that ocular refractive development results from a coordinated interplay between diverse cell types, signaling pathways, and neurotransmitters. This perspective has significant implications for unraveling the complex mechanisms underlying myopia and aiding in the development of more effective prevention and treatment strategies.
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Affiliation(s)
- Kailei Wang
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, 300020, PR China; Tianjin Key Lab of Ophthalmology and Vision Science, Tianjin Eye Hospital, Tianjin, 300020, PR China
| | - Guoge Han
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, 300020, PR China; Tianjin Key Lab of Ophthalmology and Vision Science, Tianjin Eye Hospital, Tianjin, 300020, PR China; Nankai University Eye Institute, Nankai University Affiliated Eye Hospital, Nankai University, Tianjin, 300020, PR China.
| | - Rui Hao
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, 300020, PR China; Tianjin Key Lab of Ophthalmology and Vision Science, Tianjin Eye Hospital, Tianjin, 300020, PR China; Nankai University Eye Institute, Nankai University Affiliated Eye Hospital, Nankai University, Tianjin, 300020, PR China.
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3
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Zaabaar E, Zhang XJ, Zhang Y, Bui CHT, Tang FY, Kam KW, Szeto SKH, Young AL, Wong ICK, Ip P, Tham CC, Pang CP, Chen LJ, Yam JC. Light exposure therapy for myopia control: a systematic review and Bayesian network meta-analysis. Br J Ophthalmol 2024; 108:1053-1059. [PMID: 38164527 DOI: 10.1136/bjo-2023-323798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 11/11/2023] [Indexed: 01/03/2024]
Abstract
AIMS To compare and rank the myopia control effects of different light wavelengths in children using a systematic review and Bayesian network meta-analysis (Bayesian NMA). METHODS The review protocol was registered with PROSPERO. We searched PubMed, EMBASE and MEDLINE for relevant clinical and animal studies published as of 2 February 2023. We included studies comparing red, violet or full-spectrum light with controls. Data extracted included descriptive statistics and study outcomes (axial length (AL) elongation and progression of spherical equivalent (SE) refraction). After quality assessment, estimates of treatment effect outcomes (mean differences (MDs) and 95% CIs) were first pooled for the animal and clinical studies in a traditional meta-analysis. To compare and rank the different light wavelengths, the Bayesian NMA was then conducted for all the included clinical studies (12 studies) and separately for only randomised controlled trials (8 studies). MDs, 95% credible intervals (CrIs) and ranks of the various light wavelengths were estimated in the Bayesian NMA. RESULTS When all clinical studies were included in the Bayesian NMA (12 studies), only red-light significantly slowed AL elongation, MD (95% CrI), -0.38 mm (-0.59 mm to -0.16 mm)/year and SE refraction progression, 0.72D (0.35D to 1.10D)/year compared with controls. It remained the only significant intervention when effect sizes from only RCTs (eight studies) were separately combined, (-0.28 mm (-0.40 mm to -0.15 mm)/year and 0.57D (0.22D to 0.92D)/year, for AL and SE refraction, respectively). CONCLUSION Myopia control efficacy varied among different wavelengths of light, with red light ranked as the most effective. PROSPERO REGISTRATION NUMBER Clinical studies: CRD42022368998; animal studies: CRD42022368671.
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Affiliation(s)
- Ebenezer Zaabaar
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xiu Juan Zhang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Yuzhou Zhang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Christine H T Bui
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Fang Yao Tang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Ka Wai Kam
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Ophthalmology and Visual Sciences, The Prince of Wales Hospital, Hong Kong SAR, China
| | - Simon K H Szeto
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Alvin L Young
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Ophthalmology and Visual Sciences, The Prince of Wales Hospital, Hong Kong SAR, China
| | - Ian C K Wong
- Centre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Patrick Ip
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Clement C Tham
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Ophthalmology and Visual Sciences, The Prince of Wales Hospital, Hong Kong SAR, China
- Hong Kong Eye Hospital, Hong Kong SAR, China
- Lam Kin Chung. Jet King-Shing Ho Glaucoma Treatment and Research Centre, Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Ophthalmology, Hong Kong Children Hospital, Hong Kong SAR, China
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Chi Pui Pang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Lam Kin Chung. Jet King-Shing Ho Glaucoma Treatment and Research Centre, Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Li Jia Chen
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Ophthalmology and Visual Sciences, The Prince of Wales Hospital, Hong Kong SAR, China
- Lam Kin Chung. Jet King-Shing Ho Glaucoma Treatment and Research Centre, Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jason C Yam
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Ophthalmology and Visual Sciences, The Prince of Wales Hospital, Hong Kong SAR, China
- Hong Kong Eye Hospital, Hong Kong SAR, China
- Department of Ophthalmology, Hong Kong Children Hospital, Hong Kong SAR, China
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong SAR, China
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Farzanfar A, Rozema JJ. Bi-exponential description for different forms of refractive development. J Vis 2024; 24:3. [PMID: 38967946 PMCID: PMC11232897 DOI: 10.1167/jov.24.7.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 05/15/2024] [Indexed: 07/06/2024] Open
Abstract
It was recently established that the axial power, the refractive power required by the eye for a sharp retinal image in an eye of a certain axial length, and the total refractive power of the eye may both be described by a bi-exponential function as a function of age (Rozema, 2023). Inspired by this result, this work explores whether these bi-exponential functions are able to simulate the various known courses of refractive development described in the literature, such as instant emmetropization, persistent hypermetropia, developing hypermetropia, myopia, instant homeostasis, modulated development, or emmetropizing hypermetropes. Moreover, the equations can be adjusted to match the refractive development of school-age myopia and pseudophakia up to the age of 20 years. All of these courses closely resemble those reported in the previous literature while simultaneously providing estimates for the underlying changes in axial and whole eye power.
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Affiliation(s)
- Arezoo Farzanfar
- Visual Optics Lab Antwerp (VOLANTIS), Faculty of Medicine and Health Sciences, Antwerp University, Wilrijk, Belgium
| | - Jos J Rozema
- Visual Optics Lab Antwerp (VOLANTIS), Faculty of Medicine and Health Sciences, Antwerp University, Wilrijk, Belgium
- Department of Ophthalmology, Antwerp University Hospital, Edegem, Belgium
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5
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Schaeffel F, Swiatczak B. Mechanisms of emmetropization and what might go wrong in myopia. Vision Res 2024; 220:108402. [PMID: 38705024 DOI: 10.1016/j.visres.2024.108402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 03/25/2024] [Accepted: 03/25/2024] [Indexed: 05/07/2024]
Abstract
Studies in animal models and humans have shown that refractive state is optimized during postnatal development by a closed-loop negative feedback system that uses retinal image defocus as an error signal, a mechanism called emmetropization. The sensor to detect defocus and its sign resides in the retina itself. The retina and/or the retinal pigment epithelium (RPE) presumably releases biochemical messengers to change choroidal thickness and modulate the growth rates of the underlying sclera. A central question arises: if emmetropization operates as a closed-loop system, why does it not stop myopia development? Recent experiments in young human subjects have shown that (1) the emmetropic retina can perfectly distinguish between real positive defocus and simulated defocus, and trigger transient axial eye shortening or elongation, respectively. (2) Strikingly, the myopic retina has reduced ability to inhibit eye growth when positive defocus is imposed. (3) The bi-directional response of the emmetropic retina is elicited with low spatial frequency information below 8 cyc/deg, which makes it unlikely that optical higher-order aberrations play a role. (4) The retinal mechanism for the detection of the sign of defocus involves a comparison of defocus blur in the blue (S-cone) and red end of the spectrum (L + M-cones) but, again, the myopic retina is not responsive, at least not in short-term experiments. This suggests that it cannot fully trigger the inhibitory arm of the emmetropization feedback loop. As a result, with an open feedback loop, myopia development becomes "open-loop".
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Affiliation(s)
- Frank Schaeffel
- Myopia Research Group, Institute of Molecular and Clinical Ophthalmology Basel (IOB), Switzerland; Section Neurobiology of the Eye, Institute of Ophthalmic Research, University of Tübingen, Germany; Zeiss Vision Lab, Institute of Ophthalmic Research, University of Tübingen, Germany.
| | - Barbara Swiatczak
- Myopia Research Group, Institute of Molecular and Clinical Ophthalmology Basel (IOB), Switzerland
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Tapasztó B, Flitcroft DI, Aclimandos WA, Jonas JB, De Faber JTHN, Nagy ZZ, Kestelyn PG, Januleviciene I, Grzybowski A, Vidinova CN, Guggenheim JA, Polling JR, Wolffsohn JS, Tideman JWL, Allen PM, Baraas RC, Saunders KJ, McCullough SJ, Gray LS, Wahl S, Smirnova IY, Formenti M, Radhakrishnan H, Resnikoff S, Németh J. Myopia management algorithm. Annexe to the article titled Update and guidance on management of myopia. European Society of Ophthalmology in cooperation with International Myopia Institute. Eur J Ophthalmol 2024; 34:952-966. [PMID: 38087768 PMCID: PMC11295429 DOI: 10.1177/11206721231219532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 11/23/2023] [Indexed: 02/06/2024]
Abstract
Myopia is becoming increasingly common in young generations all over the world, and it is predicted to become the most common cause of blindness and visual impairment in later life in the near future. Because myopia can cause serious complications and vision loss, it is critical to create and prescribe effective myopia treatment solutions that can help prevent or delay the onset and progression of myopia. The scientific understanding of myopia's causes, genetic background, environmental conditions, and various management techniques, including therapies to prevent or postpone its development and slow its progression, is rapidly expanding. However, some significant information gaps exist on this subject, making it difficult to develop an effective intervention plan. As with the creation of this present algorithm, a compromise is to work on best practices and reach consensus among a wide number of specialists. The quick rise in information regarding myopia management may be difficult for the busy eye care provider, but it necessitates a continuing need to evaluate new research and implement it into daily practice. To assist eye care providers in developing these strategies, an algorithm has been proposed that covers all aspects of myopia mitigation and management. The algorithm aims to provide practical assistance in choosing and developing an effective myopia management strategy tailored to the individual child. It incorporates the latest research findings and covers a wide range of modalities, from primary, secondary, and tertiary myopia prevention to interventions that reduce the progression of myopia.
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Affiliation(s)
- Beáta Tapasztó
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
- Faculty of Health Sciences, Semmelweis University, Budapest, Hungary
| | - Daniel Ian Flitcroft
- Temple Street Children's Hospital, Dublin, Ireland
- Centre for Eye Research Ireland (CERI) Technological University, Dublin, Ireland
| | | | - Jost B Jonas
- Department of Ophthalmology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | | | - Zoltán Zsolt Nagy
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | | | | | - Andrzej Grzybowski
- Institute for Research in Ophthalmology, Foundation for Ophthalmology Development, Poznan, Poland
| | - Christina Nicolaeva Vidinova
- Department of Ophthalmology, Military Medical Academy, Sofia, Bulgaria
- Department of Optometry, Sofia University “St. Kliment Ohridski“, Sofia, Bulgaria
| | | | - Jan Roelof Polling
- Department of Ophthalmology and Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Optometry and Orthoptics, University of Applied Science, Utrecht, The Netherlands
| | - James S Wolffsohn
- Optometry and Vision Science Research Group, College of Health and Life Sciences, Aston University, Birmingham, UK
| | - J Willem L Tideman
- Department of Ophthalmology and Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Department Ophthalmology, Martini Hospital, Groningen, The Netherlands
| | - Peter M Allen
- Vision and Hearing Sciences Research Centre, Anglia Ruskin University, Cambridge, UK
| | - Rigmor C Baraas
- National Centre for Optics, Vision and Eye Care, University of South-Eastern Norway, Kongsberg, Norway
| | - Kathryn J Saunders
- Centre for Optometry and Vision Science, Ulster University, Coleraine, UK
| | - Sara J McCullough
- Centre for Optometry and Vision Science, Ulster University, Coleraine, UK
| | | | - Siegfried Wahl
- Institute for Ophthalmic Research, University Tübingen, Tübingen, Germany
- Carl Zeiss Vision International GmbH, Tübingen, Germany
| | | | - Marino Formenti
- Department of Physics, School of Science, University of Padova, Padova, Italy
| | - Hema Radhakrishnan
- Division of Pharmacy and Optometry, University of Manchester, Manchester, UK
| | - Serge Resnikoff
- School of Optometry and Vision Science, University of New South Wales, Sydney, Australia
- Brien Holden Vision Institute, Sydney, Australia
| | - János Németh
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
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Kim JM, Choi YJ. Myopia and Nutrient Associations with Age-Related Eye Diseases in Korean Adults: A Cross-Sectional KNHANES Study. Nutrients 2024; 16:1276. [PMID: 38732522 PMCID: PMC11085160 DOI: 10.3390/nu16091276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 04/21/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024] Open
Abstract
This study assessed the prevalence of myopia, cataracts, glaucoma, and macular degeneration among Koreans over 40, utilizing data from the 7th Korea National Health and Nutrition Examination Survey (KNHANES VII, 2018). We analyzed 204,973 adults (44% men, 56% women; mean age 58.70 ± 10.75 years), exploring the association between myopia and these eye diseases through multivariate logistic regression, adjusting for confounders and calculating adjusted odds ratios (ORs) with 95% confidence intervals (CIs). Results showed a myopia prevalence of 44.6%, cataracts at 19.4%, macular degeneration at 16.2%, and glaucoma at 2.3%, with significant differences across ages and genders. A potential link was found between myopia and an increased risk of cataracts and macular degeneration, but not with glaucoma. Additionally, a higher dietary intake of carbohydrates, polyunsaturated and n-6 fatty acids, vitamins, and minerals correlated with lower risks of these diseases, underscoring the importance of the diet in managing and preventing age-related eye conditions. These findings highlight the need for dietary considerations in public health strategies and confirm myopia as a significant risk factor for specific eye diseases in the aging Korean population.
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Affiliation(s)
- Jeong-Mee Kim
- Department of Visual Optics, Far East University, Eumseong 27601, Republic of Korea;
| | - Yean-Jung Choi
- Department of Food and Nutrition, Sahmyook University, Seoul 01795, Republic of Korea
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Pan W, Lan W. The Current and Future Landscape of the Childhood Myopia Epidemic in China-A Review. Ophthalmol Ther 2024; 13:883-894. [PMID: 38300487 PMCID: PMC10912377 DOI: 10.1007/s40123-024-00887-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 01/11/2024] [Indexed: 02/02/2024] Open
Abstract
Over the last two decades, the prevalence of myopia has gradually increased in China. Numerous epidemiological studies suggest that education and inadequate time spent outdoors are the major causes of the current myopia epidemic. China is one of the few countries that has begun to address the myopia epidemic with a national-level strategy, implementing nationwide education reform, cost-reduction measurements, and dissemination of information on myopia prevention and control. These "natural experiments" will provide insights into areas that may face similar or potential myopia problems.
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Affiliation(s)
- Wei Pan
- Aier School of Ophthalmology, Central South University, AIER Mansion, No. 188 South Furong Road, Changsha, 410000, Hunan Province, China
| | - Weizhong Lan
- Aier School of Ophthalmology, Central South University, AIER Mansion, No. 188 South Furong Road, Changsha, 410000, Hunan Province, China.
- Hunan Province Optometry Engineering and Technology Research Center, Changsha, China.
- Hunan Province International Cooperation Base for Optometry Science and Technology, Changsha, China.
- Aier School of Optometry and Vision Science, Hubei University of Science and Technology, Xianning, China.
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Zhang Q, Jiang Y, Deng C, Wang J. Effects and potential mechanisms of exercise and physical activity on eye health and ocular diseases. Front Med (Lausanne) 2024; 11:1353624. [PMID: 38585147 PMCID: PMC10995365 DOI: 10.3389/fmed.2024.1353624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 03/12/2024] [Indexed: 04/09/2024] Open
Abstract
In the field of eye health, the profound impact of exercise and physical activity on various ocular diseases has become a focal point of attention. This review summarizes and elucidates the positive effects of exercise and physical activities on common ocular diseases, including dry eye disease (DED), cataracts, myopia, glaucoma, diabetic retinopathy (DR), and age-related macular degeneration (AMD). It also catalogues and offers exercise recommendations based on the varying impacts that different types and intensities of physical activities may have on specific eye conditions. Beyond correlations, this review also compiles potential mechanisms through which exercise and physical activity beneficially affect eye health. From mitigating ocular oxidative stress and inflammatory responses, reducing intraocular pressure, enhancing mitochondrial function, to promoting ocular blood circulation and the release of protective factors, the complex biological effects triggered by exercise and physical activities reveal their substantial potential in preventing and even assisting in the treatment of ocular diseases. This review aims not only to foster awareness and appreciation for how exercise and physical activity can improve eye health but also to serve as a catalyst for further exploration into the specific mechanisms and key targets through which exercise impacts ocular health. Such inquiries are crucial for advancing innovative strategies for the treatment of eye diseases, thereby holding significant implications for the development of new therapeutic approaches.
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Affiliation(s)
| | | | - Chaohua Deng
- Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Junming Wang
- Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Janarthanan SD, Samiyullah K, Madheswaran G, Ballae Ganeshrao S, Watt K. Exploring the impact of optical corrections on visual functions in myopia control-a scoping review. Int Ophthalmol 2024; 44:47. [PMID: 38337138 PMCID: PMC10858094 DOI: 10.1007/s10792-024-02937-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 12/17/2023] [Indexed: 02/12/2024]
Abstract
PURPOSE Myopia is controlled optically with peripheral defocus spectacles, multifocal contact lenses, or orthokeratology lenses. However, it is unknown which optical correction will improve visual performance. This scoping review aimed to identify and summarize studies on various visual functions using optical corrections for myopia control. METHODS To develop the search strategy, population (Myopia), concept (visual performance), and context (unrestricted race/region) were used. PubMed, SCOPUS, Cochrane Library, and Web of Science databases were searched using the keywords myopia, contrast sensitivity, high and low contrast visual acuity, stereopsis, and optical correction of myopia control. This scoping review protocol was registered in the Open Science Framework registry and followed the framework for scoping review outlined by the Joanna Briggs Institute. RESULTS Eight studies (n = 8) met the inclusion criteria and were included in the review. Four were conducted in Europe, two were conducted in China, and one was conducted in Japan and Singapore. Five studies were randomized controlled trials, out of which three used contact lenses and two studies used peripheral defocus spectacles lenses. Studies ranged from one day to 2 years. Three studies that used orthokeratology lenses were prospective study designs. Among the studies that used orthokeratology lenses and contact lenses, two studies measured the contrast sensitivity function with CSV1000 (Vector Vision) under mesopic and photopic conditions, with and without glare. Two studies measured the central and peripheral contrast sensitivity using psychophysics experiments. High and low contrast visual acuity was measured using the Freiburg Vision Test (n = 1) and ETDRS charts (n = 3), and stereopsis was assessed using a random dot stereogram (n = 1). The studies showed a reduction in central and peripheral contrast sensitivity function and low contrast acuity when treated with multifocal contact lenses, orthokeratology lenses, and peripheral defocus lenses compared with single-vision lenses. CONCLUSION This scoping review found a reduction in central and peripheral contrast sensitivity function, as well as low contrast visual acuity when using various optical corrections for myopia control, while high-contrast visual acuity remained the same. The impact of visual functions may not influence the effectiveness of myopia control. Eye care practitioners should provide awareness to the parent and patient population about the potential visual impact of recent designs for optical corrections of myopia control.
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Affiliation(s)
- Salai Dhavamathi Janarthanan
- Department of Optometry, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, Karnataka, India.
| | - Kaleem Samiyullah
- Department of Optometry, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | | | - Shonraj Ballae Ganeshrao
- Department of Optometry, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Kathleen Watt
- School of Optometry and Vision Science, Faculty of Medicine and Health, Univeristy of New South Wales, Sydney, Australia
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Bao WW, Zhao Y, Dadvand P, Jiang N, Chen G, Yang B, Huang W, Xiao X, Liang J, Chen Y, Huang S, Pu X, Huang S, Lin H, Guo Y, Dong G, Chen Y. Urban greenspace and visual acuity in schoolchildren: a large prospective cohort study in China. ENVIRONMENT INTERNATIONAL 2024; 184:108423. [PMID: 38241831 DOI: 10.1016/j.envint.2024.108423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 10/28/2023] [Accepted: 01/03/2024] [Indexed: 01/21/2024]
Abstract
BACKGROUND Greenspace is known to have a positive impact on human health and well-being, but its potential effects on visual acuity have not been extensively studied. OBJECTIVES Our aim was to examine the relationship between long-term greenspace exposure and visual acuity in children, while also exploring the potential mechanisms in this association. METHODS We conducted this prospective cohort study based on the Children's growth environment, lifestyle, physical, and mental health development project (COHERENCE), which screened 286,801 schoolchildren in Guangzhou, China, starting in the 2016/17 academic year and followed them up for three academic years (2017/18-2019/20). Visual acuity was measured using a standardized logarithmic chart, and visual impairment was defined as visual acuity worse than 0.0 logarithm of the minimum angle of resolution (LogMAR) units in the better eye. We used the Normalized Difference Vegetation Index (NDVI), the Soil-Adjusted Vegetation Index (SAVI), and the Enhanced Vegetation Index (EVI) to assess the greenspace surrounding child's geocoded home and school at each visit. RESULTS Our analysis indicated that higher greenspace exposure was associated with greater visual acuity z-score at baseline and with slower decline in visual acuity z-score during the 3-year follow-up. An interquartile range increase in home-school-based NDVI 300m was associated with a 7% decrease [hazard ratios (HRs): 0.93, 95% confidence interval (CI): 0.92, 0.94] in the risk of visual impairment. We also found that air pollution, physical activity, outdoor time, and recreational screen time partially mediated the greenspace-visual acuity association. CONCLUSION Our findings suggest that increasing greenspace exposure could benefit children's visual acuity development and reduce the risk of visual impairment by reducing air pollution and recreational screen time while increasing physical activity and outdoor time. All results could have potential policy implications, given the individual and societal burdens associated with visual impairment.
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Affiliation(s)
- Wen-Wen Bao
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yu Zhao
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Payam Dadvand
- ISGlobal, Barcelona, Spain, CIBER Epidemiología y Salud Pública (CIBERESP), Spain
| | - Nan Jiang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Gongbo Chen
- Climate, Air Quality Research Unit, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Boyi Yang
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Wenzhong Huang
- Climate, Air Quality Research Unit, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Xiang Xiao
- Department of Geography, Hong Kong Baptist University, Hong Kong SAR; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, China
| | - Jinghong Liang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yican Chen
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Shan Huang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Xueya Pu
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Shaoyi Huang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Haotian Lin
- Zhongshan Ophthalmic Centre, Sun Yat-sen University, 7# Jinsui Road, Guangzhou, 510623, China
| | - Yuming Guo
- Climate, Air Quality Research Unit, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Guanghui Dong
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yajun Chen
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
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Biswas S, El Kareh A, Qureshi M, Lee DMX, Sun CH, Lam JSH, Saw SM, Najjar RP. The influence of the environment and lifestyle on myopia. J Physiol Anthropol 2024; 43:7. [PMID: 38297353 PMCID: PMC10829372 DOI: 10.1186/s40101-024-00354-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/05/2024] [Indexed: 02/02/2024] Open
Abstract
BACKGROUND Myopia, commonly known as near-sightedness, has emerged as a global epidemic, impacting almost one in three individuals across the world. The increasing prevalence of myopia during early childhood has heightened the risk of developing high myopia and related sight-threatening eye conditions in adulthood. This surge in myopia rates, occurring within a relatively stable genetic framework, underscores the profound influence of environmental and lifestyle factors on this condition. In this comprehensive narrative review, we shed light on both established and potential environmental and lifestyle contributors that affect the development and progression of myopia. MAIN BODY Epidemiological and interventional research has consistently revealed a compelling connection between increased outdoor time and a decreased risk of myopia in children. This protective effect may primarily be attributed to exposure to the characteristics of natural light (i.e., sunlight) and the release of retinal dopamine. Conversely, irrespective of outdoor time, excessive engagement in near work can further worsen the onset of myopia. While the exact mechanisms behind this exacerbation are not fully comprehended, it appears to involve shifts in relative peripheral refraction, the overstimulation of accommodation, or a complex interplay of these factors, leading to issues like retinal image defocus, blur, and chromatic aberration. Other potential factors like the spatial frequency of the visual environment, circadian rhythm, sleep, nutrition, smoking, socio-economic status, and education have debatable independent influences on myopia development. CONCLUSION The environment exerts a significant influence on the development and progression of myopia. Improving the modifiable key environmental predictors like time spent outdoors and engagement in near work can prevent or slow the progression of myopia. The intricate connections between lifestyle and environmental factors often obscure research findings, making it challenging to disentangle their individual effects. This complexity underscores the necessity for prospective studies that employ objective assessments, such as quantifying light exposure and near work, among others. These studies are crucial for gaining a more comprehensive understanding of how various environmental factors can be modified to prevent or slow the progression of myopia.
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Affiliation(s)
- Sayantan Biswas
- School of Optometry, College of Health and Life Sciences, Aston University, Birmingham, UK
| | - Antonio El Kareh
- Faculty of Medical Sciences, Lebanese University, Hadath, Lebanon
| | - Mariyem Qureshi
- School of Optometry, College of Health and Life Sciences, Aston University, Birmingham, UK
| | | | - Chen-Hsin Sun
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Janice S H Lam
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Seang-Mei Saw
- Singapore Eye Research Institute, Singapore, Singapore
- Ophthalmology and Visual Science Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
| | - Raymond P Najjar
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
- Singapore Eye Research Institute, Singapore, Singapore.
- Ophthalmology and Visual Science Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore.
- Department of Biomedical Engineering, College of Design and Engineering, National University of Singapore, Singapore, Singapore.
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Levinger E, Arnon R, Pikkel J, Yahalomi T, Sela T, Munzer G, Mimouni M. Photorefractive keratectomy in flat, normal, and steep corneas. J Cataract Refract Surg 2024; 50:51-56. [PMID: 38048136 DOI: 10.1097/j.jcrs.0000000000001307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 08/31/2023] [Indexed: 12/05/2023]
Abstract
PURPOSE To compare photorefractive keratectomy (PRK) outcomes in patients with different corneal steepness. SETTING Care-Vision Laser Center, Tel-Aviv, Israel. DESIGN Retrospective comparative chart review. METHODS Patients included in this study underwent wavefront optimized myopic PRK between January 2013 and December 2019. Patients were divided into 3 groups based on the steepness of the cornea (steep keratometry) (flat: <42 diopters [D], normal: 42 to 46 D and steep: >46 D). One to one matching was performed to verify that baseline parameters (age, preoperative visual acuity and refractive error) were similar between groups. Primary outcome measures were: postoperative corrected/uncorrected distance visual acuity (CDVA/UDVA), efficacy index (postoperative UDVA/preoperative CDVA), safety index (postoperative CDVA/preoperative CDVA), spherical equivalence (SEQ) and cylinder. RESULTS After matching, 650 eyes were included in each group, which were similar in baseline parameters. There were no significant postoperative differences between flat, normal, and steep corneas in terms of safety index (1.02 vs 1.03 vs 1.03, P = .28), efficacy index (1.01 vs 1.01 vs 1.02, P = .57), logMAR CDVA (0.01 vs 0.02 vs 0.01, P = .76), logMAR UDVA (0.02 vs 0.03 vs 0.02, P = .68), %SEQ within 0.50 D (73.9% vs 74.2% vs 74.6%, P = .95) or 1.00 D of target (91.9% vs 92.5% vs 92.2%, P = .92), %cylinder within 0.50 D (82.8% vs 82.2% vs 81.4%, P = .81) or 1.00 D of target (96.9% vs 97.1% vs 97.2%, P = .95). CONCLUSIONS No significant differences were found between flat, normal and steep corneas following wavefront-optimized myopic PRK. Thus, this procedure may be safely and effectively performed in both flat and steep corneas.
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Affiliation(s)
- Eliya Levinger
- From the Department of Ophthalmology, Tel Aviv Medical Center affiliated with the Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel (Levinger); Department of Ophthalmology, Assuta-Samson Ashdod Hospital affiliated with the Faculty of Medicine, Ben Gurion University, Beer-Sheva, Israel (Arnon, Pikkel, Yahalomi); Department of Ophthalmology, Rambam Health Care Campus, Haifa, Israel (Mimouni); Bruce and Ruth Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel (Mimouni); Care-Vision Laser Centers, Tel-Aviv, Israel (Sela, Munzer, Mimouni)
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Lo RF, Sasaki JY. Lay Misperceptions of Culture as "Biological" and Suggestions for Reducing Them. PERSPECTIVES ON PSYCHOLOGICAL SCIENCE 2024; 19:295-311. [PMID: 37493140 PMCID: PMC10790513 DOI: 10.1177/17456916231181139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Culture is typically studied as socialized and learned. Yet lay intuitions may hold that culture is associated with biology via perceptions of race, presenting a problem for those who study culture: There may be a mismatch between how psychologists study culture and how their research is interpreted by lay audiences. This article is a call to researchers to recognize this mismatch as a problem and to critically evaluate the way we study culture. We first describe evidence that laypeople tend to associate culture with notions of folk biology. Next, we propose three suggestions for researchers: explicitly address whether biological processes are, or are not, relevant for studying culture in their work; consider using multiple methods because different methods for studying culture may come with assumptions about culture as more tied to socialization or biology; and represent all people as cultural by studying multiple forms of culture and by contextualizing all psychological research. Last, we provide an example for how researchers can implement these suggestions to encourage more accurate interpretations of findings.
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Affiliation(s)
| | - Joni Y. Sasaki
- Department of Psychology, University of Hawai‘i at Ma-noa
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15
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Zhao M, Zhang Y, Herold F, Chen J, Hou M, Zhang Z, Gao Y, Sun J, Hossain MM, Kramer AF, Müller NG, Zou L. Associations between meeting 24-hour movement guidelines and myopia among school-aged children: A cross-sectional study. Complement Ther Clin Pract 2023; 53:101792. [PMID: 37595358 DOI: 10.1016/j.ctcp.2023.101792] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/24/2023] [Accepted: 08/03/2023] [Indexed: 08/20/2023]
Abstract
BACKGROUND The Canadian 24-hour movement behavior (24-HMB) guidelines recommend an adequate level of physical activity (PA), a limited amount of screen time (ST), and a sufficient sleep duration (SLP) to promote the healthy development of children. Although the positive effects of adhering to the 24-HMB guidelines have been established for several health parameters, less is known about how adherence to the 24-HMB guidelines relates to the myopia risk (i.e., inability to see distant objects properly). Thus, this study investigated associations between meeting 24-HMB guidelines and myopia risk in school-aged children. METHOD Using a questionnaire survey, this cross-sectional study was conducted among parents of school-aged children (5-13 years) in China from 15th September to 15th October 2022, with a total of 1423 respondents with complete data for analysis. Parents reported their child's time spent in moderate-to-vigorous-intensity physical activity (MVPA), SLP, and ST. Multiple logistic regression analyses were performed to examine the associations between measures of PA, ST, and SLP alone and in combination, and the occurrence of myopia. RESULTS A relatively low percentage of the children being included in the current study (4.92%) met all 24-HMB guidelines, while 32.46% had myopia. Girls had a significantly higher risk of myopia compared to boys (OR = 1.3, 1.002 to 1.68, p = 0.049). Children of parents without myopia had a lower risk of myopia (OR = 0.45, 0.34-0.59, p < 0.001). Children who lived in urban areas (OR = 1.83, 95% CI 1.33 to 2.52, p < 0.001) or towns (OR = 1.60, 1.03 to 2.47, p = 0.04) had a significantly higher risk of myopia compared to those living in rural areas. Meeting SLP guidelines (OR = 0.50, 95% CI 0.31 to 0.82, p < 0.01), meeting ST + SLP guidelines (OR = 0.47, 95% CI 0.32-0.69, <0.001), and meeting all three guidelines were associated with significantly lower risk of myopia (OR = 0.40, 95% CI 0.20-0.82, p = 0.01). Meeting more 24-HMB guidelines was associated with a reduced risk of myopia. CONCLUSIONS Our data suggest that adhering to SLP, ST + SLP, and ST + SLP + PA guidelines is associated with the risk of myopia. Future research investigating dose-response associations, and potential mechanisms, is necessary to achieve a more nuanced understanding of the observed associations.
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Affiliation(s)
- Mengxian Zhao
- Body-Brain-Mind Laboratory, School of Physical Education, School of Psychology, Shenzhen University, Shenzhen, 518060, China
| | - Yanjie Zhang
- Physical Education Unit, Chinese University of Hong Kong, Shenzhen, China
| | - Fabian Herold
- Research Group Degenerative and Chronic Diseases, Movement, Faculty of Health Sciences Brandenburg, University of Potsdam, Potsdam, Germany
| | - Jianyu Chen
- Body-Brain-Mind Laboratory, School of Physical Education, School of Psychology, Shenzhen University, Shenzhen, 518060, China
| | - Meijun Hou
- Body-Brain-Mind Laboratory, School of Physical Education, School of Psychology, Shenzhen University, Shenzhen, 518060, China
| | - Zhihao Zhang
- Body-Brain-Mind Laboratory, School of Physical Education, School of Psychology, Shenzhen University, Shenzhen, 518060, China
| | - Yanping Gao
- Body-Brain-Mind Laboratory, School of Physical Education, School of Psychology, Shenzhen University, Shenzhen, 518060, China
| | - Jing Sun
- School of Medicine and Dentistry and Menzies Health Institute Queensland, Institute for Integrated Intelligence and Systems, Griffith University, Australia
| | - M Mahbub Hossain
- Department of Decision and Information Sciences, C.T. Bauer College of Business, University of Houston, TX, 77204, USA; Department of Health Systems and Population Health Sciences, Tilman J. Fertitta Family College of Medicine, University of Houston, TX, 77204, USA
| | - Arthur F Kramer
- Center for Cognitive and Brain Health, Northeastern University, Boston, 02115, MA, United States; Beckman Institute, University of Illinois at Urbana-Champaign, Champaign, 61820, IL, United States
| | - Notger G Müller
- Research Group Degenerative and Chronic Diseases, Movement, Faculty of Health Sciences Brandenburg, University of Potsdam, Potsdam, Germany
| | - Liye Zou
- Body-Brain-Mind Laboratory, School of Physical Education, School of Psychology, Shenzhen University, Shenzhen, 518060, China.
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Di Pierdomenico J, González-González R, Valiente-Soriano FJ, Galindo-Romero C, García-Ayuso D. Attitudes and knowledge of myopia management by Spanish optometrists. Int Ophthalmol 2023; 43:4247-4261. [PMID: 37596425 PMCID: PMC10520101 DOI: 10.1007/s10792-023-02835-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 07/27/2023] [Indexed: 08/20/2023]
Abstract
PURPOSE To investigate the knowledge, training and clinical practice of Spanish optometrists about preventing and controlling myopia progression. METHODS A web-based questionnaire was distributed to Spanish optometrists through social networks, optometric professional bodies and one of the major Spanish optometrists' associations to assess practitioner perception, understanding, and self-reported clinical practice behavior related to myopia diagnosis and management. RESULTS A total of 534 optometrists with a mean age of 40.8 ± 10.3 years completed the survey. Most respondents have been practicing optometry for more than 20 years (89.8%), report having actively treated childhood myopia (82.4%), and are very concerned about the increasing frequency of pediatric myopia in their daily practice (85.3%). Almost all of the respondents (97.3%) agreed that the efficacy of treatment is related to the age at which it is prescribed, and more than half (53.6%) considered a progression higher than - 0.50 and up to - 1.00D as the minimum necessary to consider a myopia management option. Respondents who reported actively managing childhood myopia considered orthokeratology, atropine and soft-defocus contact lenses the most effective myopia control interventions. However, the most frequently prescribed form of myopia correction by Spanish optometrists was single-vision spectacles, followed by orthokeratology and soft-defocus contact lenses. CONCLUSIONS Spanish optometrists are very active in the management of myopia, especially by fitting orthokeratology lenses or dual-focus soft contact lenses for myopia control, but there is still potential for improvement in the methodology they follow for both the diagnosis and management of myopia.
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Affiliation(s)
- Johnny Di Pierdomenico
- Facultad de Óptica y Optometría, Universidad de Murcia, Murcia, Spain
- Grupo de Investigación Oftalmología Experimental, Departamento de Oftalmología, Optometría, Otorrinolaringología y Anatomía Patológica, Facultad de Medicina, Universidad de Murcia, Instituto Murciano de Investigación Biosanitaria (IMIB), Campus de Ciencias de la Salud, 30120, Murcia, España
| | | | - Francisco J Valiente-Soriano
- Facultad de Óptica y Optometría, Universidad de Murcia, Murcia, Spain
- Grupo de Investigación Oftalmología Experimental, Departamento de Oftalmología, Optometría, Otorrinolaringología y Anatomía Patológica, Facultad de Medicina, Universidad de Murcia, Instituto Murciano de Investigación Biosanitaria (IMIB), Campus de Ciencias de la Salud, 30120, Murcia, España
| | - Caridad Galindo-Romero
- Facultad de Óptica y Optometría, Universidad de Murcia, Murcia, Spain
- Grupo de Investigación Oftalmología Experimental, Departamento de Oftalmología, Optometría, Otorrinolaringología y Anatomía Patológica, Facultad de Medicina, Universidad de Murcia, Instituto Murciano de Investigación Biosanitaria (IMIB), Campus de Ciencias de la Salud, 30120, Murcia, España
| | - Diego García-Ayuso
- Facultad de Óptica y Optometría, Universidad de Murcia, Murcia, Spain.
- Grupo de Investigación Oftalmología Experimental, Departamento de Oftalmología, Optometría, Otorrinolaringología y Anatomía Patológica, Facultad de Medicina, Universidad de Murcia, Instituto Murciano de Investigación Biosanitaria (IMIB), Campus de Ciencias de la Salud, 30120, Murcia, España.
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Liang X, Wei S, Zhao S, Li SM, An W, Sun Y, Bai W, Cai Z, Wang N. Investigation of Choroidal Blood Flow and Thickness Changes Induced by Near Work in Young Adults. Curr Eye Res 2023; 48:939-948. [PMID: 37303164 DOI: 10.1080/02713683.2023.2222234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 05/11/2023] [Accepted: 06/01/2023] [Indexed: 06/13/2023]
Abstract
PURPOSE This research aimed to determine the effects of near work on macular choroidal blood flow and thickness in young adults. METHODS A total of 109 participants (19-28 years old) were recruited from Capital Medical University in China. The participants spent 40 min reading a book text at a distance of 33 cm. Swept-source optical coherence tomography/optical coherence tomography angiography (SS-OCT/OCTA) was performed to measure the changes in choriocapillaris perfusion area (CCPA) and choroidal thickness (ChT) after 40 min of near work. The SS-OCT/OCTA data covered an area of 6 mm × 6 mm, which centered on the fovea. RESULTS The baseline ChT and CCPA before near work were negatively correlated with AL, while positively correlated with the magnitude of spherical equivalent (p < .001). Total CCPA decreased significantly by 6 mm × 6 mm macular area after near work compared to that before near work (24.26 ± 1.96 vs. 24.63 ± 1.61 mm2, p<.001). The macular ChT was lower after 40 min of reading than that before 40 min of reading, but no significant difference was observed (302.25 ± 77.69 vs. 304.92 ± 79.73 μm, p = .078). The extent of choroidal thinning was significantly positively correlated with the magnitude of CCPA reduction (p < .001). The decline in CCPA after near work was significantly positively correlated with axial length (AL; p < .001). CONCLUSION This study demonstrated that near work significantly decreased CCPA. The extent of CCPA reduction after near work was associated with higher severity of myopia and choroidal thinning. The baseline CCPA and ChT decreased gradually with AL.
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Affiliation(s)
- Xintong Liang
- Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Institute of Ophthalmology, Capital Medical University, Beijing, China
| | - Shifei Wei
- Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Institute of Ophthalmology, Capital Medical University, Beijing, China
| | - Shengjun Zhao
- Department of Clinical Medicine, Capital Medical University, Beijing, China
| | - Shi-Ming Li
- Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Institute of Ophthalmology, Capital Medical University, Beijing, China
| | - Wenzai An
- Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Institute of Ophthalmology, Capital Medical University, Beijing, China
| | - Yunyun Sun
- Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Institute of Ophthalmology, Capital Medical University, Beijing, China
| | - Weiling Bai
- Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Institute of Ophthalmology, Capital Medical University, Beijing, China
| | - Zhining Cai
- Department of Clinical Medicine, Capital Medical University, Beijing, China
| | - Ningli Wang
- Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Institute of Ophthalmology, Capital Medical University, Beijing, China
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Hönekopp A, Weigelt S. Using Light Meters to Investigate the Light-Myopia Association - A Literature Review of Devices and Research Methods. Clin Ophthalmol 2023; 17:2737-2760. [PMID: 37743889 PMCID: PMC10517690 DOI: 10.2147/opth.s420631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 08/18/2023] [Indexed: 09/26/2023] Open
Abstract
With the increasing prevalence of myopia, evaluating its relationship with objective light exposure as a potential adjustable environmental factor in myopia development has been an emerging research field in recent years. From a thorough literature search, we identify ten wearable light meters from human studies on light exposure and myopia and present an overview of their parameters, thereby demonstrating the wide between-device variability and discussing its implications. We further identify 20 publications, including two reanalyses, reporting investigations of light-myopia associations with data from human subjects wearing light meters. We thoroughly review the publications with respect to general characteristics, aspects of data collection, participant population, as well as data analysis and interpretation, and also assess potential patterns regarding the absence or presence of light-myopia associations in their results. In doing so, we highlight areas in which more research is needed as well as several aspects that warrant consideration in the study of light exposure and myopia.
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Affiliation(s)
- Astrid Hönekopp
- Department of Rehabilitation Sciences, Research Unit Vision, Visual Impairments & Blindness, TU Dortmund University, Dortmund, Germany
| | - Sarah Weigelt
- Department of Rehabilitation Sciences, Research Unit Vision, Visual Impairments & Blindness, TU Dortmund University, Dortmund, Germany
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Gisbert S, Wahl S, Schaeffel F. L-opsin expression in chickens is similarly reduced with diffusers and negative lenses. Vision Res 2023; 210:108272. [PMID: 37269575 DOI: 10.1016/j.visres.2023.108272] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/22/2023] [Accepted: 05/22/2023] [Indexed: 06/05/2023]
Abstract
Previous studies have shown that the expression of L- and M-opsins was reduced in chicken retina when eyes were covered with diffusers. The purpose of the current study was to find out whether this is a result of altered spatial processing during development of deprivation myopia or merely a consequence of light attenuation by the diffusers. Therefore, retinal luminances were matched by neutral density filters in fellow eyes that served as controls for diffuser-treated eyes. Furthermore, the effects of negative lenses on opsins expression were studied. Chickens wore diffusers or -7D lenses for a period of 7 days and refractive state and ocular biometry were measured at the beginning and at the end of the experiment. Retinal tissue was extracted from both eyes to quantify L-, M- and S-opsins expression by qRT-PCR. It was found that L-opsin expression was significantly lower in eyes wearing diffusers, compared to fellow eyes covered with neutral density filters. Interestingly, L-opsin was also reduced in eyes wearing negative lenses. In summary, this study shows that L-opsin expression is reduced due to the loss of high spatial frequencies and general contrast reduction in the retinal image, rather than by a decline in retinal luminance. Moreover, the fact that L-opsin was similarly reduced in eyes treated with negative lenses and diffusers suggests the existence of a common pathway for emmetropization, but it could also be just a consequence of reduced high spatial frequencies and lower contrast.
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Affiliation(s)
- Sandra Gisbert
- Carl Zeiss Vision International GmbH, Technology, and Innovation, Turnstrasse 27, 73430 Aalen, Germany; Institute for Ophthalmic Research, Eberhard Karls University Tuebingen, Elfriede-Aulhorn-Strasse 7, 72076 Tuebingen, Germany.
| | - Siegfried Wahl
- Carl Zeiss Vision International GmbH, Technology, and Innovation, Turnstrasse 27, 73430 Aalen, Germany; Institute for Ophthalmic Research, Eberhard Karls University Tuebingen, Elfriede-Aulhorn-Strasse 7, 72076 Tuebingen, Germany
| | - Frank Schaeffel
- Carl Zeiss Vision International GmbH, Technology, and Innovation, Turnstrasse 27, 73430 Aalen, Germany; Institute for Ophthalmic Research, Eberhard Karls University Tuebingen, Elfriede-Aulhorn-Strasse 7, 72076 Tuebingen, Germany; Institute of Molecular and Clinical Ophthalmology Basel, Mittlere Strasse 91, CH-4031 Basel, Switzerland
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20
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Jiang Z, Hou A, Zhang T, Lai Y, Huang L, Ding X. Pattern of choroidal thickness in early-onset high myopia. Front Med (Lausanne) 2023; 10:1156259. [PMID: 37538314 PMCID: PMC10394095 DOI: 10.3389/fmed.2023.1156259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 07/05/2023] [Indexed: 08/05/2023] Open
Abstract
Purpose To explore the etiology and choroidal thickness (ChT) pattern in children with early-onset high myopia (eoHM). Methods Sixty children with eoHM and 20 healthy controls were enrolled in this study between January 2019 and December 2021. All children underwent comprehensive ophthalmologic examinations including swept-source optical coherence tomography. ChT was measured in the subfoveal region and at 1000 μm and 2,500 μm nasal, temporal, superior, and inferior to the fovea. Results Overall, 120 eyes of 60 children with eoHM were examined (mean spherical equivalent, -8.88 ± 3.05 D; mean axial length, 26.07 ± 1.59 mm). Simple high myopia (SHM), familial exudative vitreoretinopathy (FEVR), and Stickler syndrome (STL) were the most frequent etiologies of eoHM and were included in further ChT analysis. Adjusted the effect of SE, multivariate regression analysis showed that children with SHM had thinnest ChT at N2500 and I2500 among the subgroups (p = 0.039, p = 0.013). FEVR group showed thinner ChT at T2500 (p = 0.023), while STL patients exhibited thin ChT at all locations. Conclusion This study revealed that SHM, STL and FEVR was the most frequent etiology, and showed a distinctive pattern of ChT. Asymmetric nasal ChT thinning is a distinctive biomarker for SHM, asymmetric temporal ChT thinning might serve as a biomarker for FEVR, and symmetric diffuse thinning is more common in STL. These ChT patterns may provide a convenient, fast, and noninvasive strategy to differentiate the potential etiology of eoHM.
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21
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Peng W, Zhang Z, Wang F, Sun S, Sun Y. Association of educational environment with the prevalence of myopia: a cross-sectional study in central China. Front Public Health 2023; 11:1188198. [PMID: 37397761 PMCID: PMC10308441 DOI: 10.3389/fpubh.2023.1188198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 06/01/2023] [Indexed: 07/04/2023] Open
Abstract
Purposes This study was to estimate the prevalence of myopia among primary school students in Hefei, China, and evaluate the association of educational environment with myopia. Methods This study was a cross-sectional study, and recruited primary school students in grades 1-6. Children underwent a stepwise ophthalmic examination, which included visual acuity and objective cycloplegic refraction to identify children with myopia. Under the guidance of parents, children completed a questionnaire, including gender, region, grade and several indicators related to education. The study analyzed the risk factors by using a logistic regression and assessed feature importance by using a random forest algorithm. Results A total of 3,596 primary school students were involved in this analysis, and the overall prevalence of myopia was 27.1%. Gender, grade, education level of the father, education level of the mother, academic level of children, hours of homework per day on weekends, number of after-school tutoring per week and frequency of extracurricular reading were significantly associated with myopia. There was no significant association between the amount of homework per day on school days and myopia after adjusting for covariates. In terms of educational environment, the top 3 factors were academic level of children, homework on weekends and after-school tutoring. Conclusions Educational environment with high educational loads was associated with the high prevalence of myopia. Reducing the burden of studying, especially that after class, was an effective way to prevent myopia.
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Affiliation(s)
- Wei Peng
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
- University of Science and Technology of China, Hefei, China
| | - Zikang Zhang
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
- University of Science and Technology of China, Hefei, China
| | - Fei Wang
- The Second Hospital of Anhui Medical University, Hefei, China
| | - Shaoming Sun
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
- CAS Hefei Institute of Technology Innovation, Hefei, China
| | - Yining Sun
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
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22
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Zhang B, Liao H, Xiong F, Mao T, Wu L, Li Y, Xiong C. Home confinement's impact on myopia control by using orthokeratology in school-aged children. BMC Ophthalmol 2023; 23:249. [PMID: 37271801 DOI: 10.1186/s12886-023-02969-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 05/05/2023] [Indexed: 06/06/2023] Open
Abstract
BACKGROUND Home confinement during the epidemic has a significant impact on the lifestyle and behavior of school-aged children, who have exhibited an increase in the prevalence and development of myopia. Our research will look at if home confinement will affect school-aged children on myopia control with orthokeratology. METHOD Data on axial length was gathered from school-aged children who had received OK lenses treatment. The entire data was separated into subgroups based on gender, age, and initial refraction, and the AL changes for each period were calculated using the formula defined in our study. Finally, the acquired data will be examined using various statistical approaches, and the ideas of slow, moderate, and rapid myopia progression will be applied to our study. RESULT A total of 258 study subjects met the requirements to be included in the study. We discovered that the percentage of rapid myopia growth increased during the epidemic. In addition, the AL changes before and during the epidemic were found to be statistically significant in 171 subjects in the overall data. (P = 0.041) In the high age group, the AL changes before and during the epidemic、(P = 0.033) before and after the epidemic (P = 0.023) were found to be statistically significant. The AL changes before and during the epidemic (P = 0.035) were shown to be statistically significant in the moderate myopia group. Finally, we did not find statistically significant results for other groups. CONCLUSION We cannot conclude that home confinement did have a negative impact on myopia control with orthokeratology in school-aged children. But we found there was an increase in the percentage of patients with OK treatment that had fast myopia progression during the confinement. We also observed that older children with higher initial refraction were more likely to be affected by home confinement.
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Affiliation(s)
- Boyuan Zhang
- Department of Orbital Diseases, Affiliated Eye Hospital of Nanchang University, Nanchang, 330006, China
- Academic of Optometry, Nanchang University, Nanchang, China
| | - Hongfei Liao
- Department of Orbital Diseases, Affiliated Eye Hospital of Nanchang University, Nanchang, 330006, China.
- Academic of Optometry, Nanchang University, Nanchang, China.
| | - Fen Xiong
- Department of Orbital Diseases, Affiliated Eye Hospital of Nanchang University, Nanchang, 330006, China.
- Academic of Optometry, Nanchang University, Nanchang, China.
| | - Tian Mao
- Department of Orbital Diseases, Affiliated Eye Hospital of Nanchang University, Nanchang, 330006, China
- Academic of Optometry, Nanchang University, Nanchang, China
| | - Lili Wu
- Department of Orbital Diseases, Affiliated Eye Hospital of Nanchang University, Nanchang, 330006, China
- Academic of Optometry, Nanchang University, Nanchang, China
| | - Yue Li
- Department of Orbital Diseases, Affiliated Eye Hospital of Nanchang University, Nanchang, 330006, China
- Academic of Optometry, Nanchang University, Nanchang, China
| | - Chao Xiong
- Department of Orbital Diseases, Affiliated Eye Hospital of Nanchang University, Nanchang, 330006, China
- Academic of Optometry, Nanchang University, Nanchang, China
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23
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Shemesh R, Dichter S, Mezer E, Wygnanski-Jaffe T. The 100 Most Frequently Cited Articles on Myopia. J Ophthalmol 2023; 2023:7131105. [PMID: 37215949 PMCID: PMC10195181 DOI: 10.1155/2023/7131105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 04/13/2023] [Accepted: 04/21/2023] [Indexed: 05/24/2023] Open
Abstract
Purpose To provide a bibliographical-historical perspective and main interest in the field of myopia. Methods In this bibliographic study, the Web of Science Database was searched from 1999 to 2018. Recorded parameters included journal name, impact factor, year and language, number of authors, type and origin, methodology, number of subjects, funding, and topics. Results Epidemiological assessments were the leading type of article (28%), and half of the papers were prospective studies. The number of citations for multicenter studies was significantly higher (P = 0.034). The articles were published in 27 journals, with the majority in Investigative Ophthalmology, Vision Sciences (28%), and Ophthalmology (26%). Etiology, signs and symptoms, and treatment equally encompassed the topics. Papers addressing etiology, specifically genetic and environmental factors (P = 0.029), signs and symptoms (P = 0.001), and prevention, specifically public awareness (47%, P = 0.005), received significantly more citations. Treatment to decrease myopia progression was a much more common topic (68%) than refractive surgery (32%). Optical treatment was the most popular modality (39%). Half of the publications came from 3 countries: the United States (US), Australia, and Singapore. The highest ranked and cited papers came from the US (P = 0.028) and Singapore (P = 0.028). Conclusions To our knowledge, this is the first report of the top-cited articles on myopia. There is a predominance of epidemiological assessments and multicenter studies originating from the US, Australia, and Singapore, assessing etiology, signs and symptoms, and prevention. These are more frequently cited, emphasizing the great interest in mapping the increase in the incidence of myopia in different countries, public health awareness, and myopia control.
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Affiliation(s)
- Rachel Shemesh
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
- Goldschleger Eye Institute, Sheba Medical Center, Tel-Hashomer, Israel
| | - Sarah Dichter
- Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Eedy Mezer
- Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
- Department of Ophthalmology, Rambam Health Care Campus, Haifa, Israel
| | - Tamara Wygnanski-Jaffe
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
- Goldschleger Eye Institute, Sheba Medical Center, Tel-Hashomer, Israel
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Lou L, Ostrin LA. The outdoor environment affects retinal and choroidal thickness. Ophthalmic Physiol Opt 2023; 43:572-583. [PMID: 36779486 PMCID: PMC10081136 DOI: 10.1111/opo.13107] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/27/2023] [Accepted: 01/28/2023] [Indexed: 02/14/2023]
Abstract
PURPOSE Accumulating evidence suggests that time outdoors is protective against myopia development and that the choroid may be involved in this effect. The goal of this study was to examine the effect of 2 h of time outdoors in sunlight on retinal and choroidal thickness in adults. METHODS Twenty adults, ages 23-46 years, each participated in three experimental sessions on different days, consisting of 2 h of exposure to (1) indoor illumination (350 lux), (2) darkness (<0.1 lux) or (3) outdoor environment (6000-50,000 lux). Spectral-domain optical coherence tomography (SD-OCT) imaging was conducted at baseline, after 1 and 2 h of exposure, and after 1 and 2 h of follow-up. Choroidal, total retinal, photoreceptor outer segment + retinal pigment epithelium (RPE) and photoreceptor inner segment thicknesses were determined. RESULTS At 2 h, the choroid was significantly thinner during the outdoor compared with the indoor and dark conditions (p < 0.01) but was not significantly different at follow-up. Total retinal thickness was significantly thicker during and after the outdoor compared with the indoor and dark conditions. The outer segment + RPE was significantly thinner during the outdoor compared with the indoor condition but was not significantly different at follow-up. The inner segment was significantly thicker during the outdoor compared with the indoor and dark conditions during exposure and follow-up. CONCLUSIONS Spending 2 h outdoors under high-intensity sunlight resulted in an unexpected thinning of the choroid, which recovered post-exposure. Retinal thickness showed different responses to the outdoor and indoor environments and was sensitive to the duration of exposure.
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Affiliation(s)
- Linjiang Lou
- College of Optometry, University of Houston, Houston, Texas, USA
| | - Lisa A. Ostrin
- College of Optometry, University of Houston, Houston, Texas, USA
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25
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Poudel S, Rahimi-Nasrabadi H, Jin J, Najafian S, Alonso JM. Differences in visual stimulation between reading and walking and implications for myopia development. J Vis 2023; 23:3. [PMID: 37014657 PMCID: PMC10080958 DOI: 10.1167/jov.23.4.3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 02/11/2023] [Indexed: 04/05/2023] Open
Abstract
Visual input plays an important role in the development of myopia (nearsightedness), a visual disorder that blurs vision at far distances. The risk of myopia progression increases with the time spent reading and decreases with outdoor activity for reasons that remain poorly understood. To investigate the stimulus parameters driving this disorder, we compared the visual input to the retina of humans performing two tasks associated with different risks of myopia progression, reading and walking. Human subjects performed the two tasks while wearing glasses with cameras and sensors that recorded visual scenes and visuomotor activity. When compared with walking, reading black text in white background reduced spatiotemporal contrast in central vision and increased it in peripheral vision, leading to a pronounced reduction in the ratio of central/peripheral strength of visual stimulation. It also made the luminance distribution heavily skewed toward negative dark contrast in central vision and positive light contrast in peripheral vision, decreasing the central/peripheral stimulation ratio of ON visual pathways. It also decreased fixation distance, blink rate, pupil size, and head-eye coordination reflexes dominated by ON pathways. Taken together with previous work, these results support the hypothesis that reading drives myopia progression by understimulating ON visual pathways.
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Affiliation(s)
- Sabina Poudel
- Department of Biological and Visual Sciences, SUNY College of Optometry, New York, NY, USA
| | - Hamed Rahimi-Nasrabadi
- Department of Biological and Visual Sciences, SUNY College of Optometry, New York, NY, USA
| | - Jianzhong Jin
- Department of Biological and Visual Sciences, SUNY College of Optometry, New York, NY, USA
| | - Sohrab Najafian
- Department of Biological and Visual Sciences, SUNY College of Optometry, New York, NY, USA
| | - Jose-Manuel Alonso
- Department of Biological and Visual Sciences, SUNY College of Optometry, New York, NY, USA
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26
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Liu Y, Meng D, Wang Y, Wang X, Xue C, Hao R, Zhang W. Ocular biological parameters and prevalence of myopia in vocational high school and general high school in China. Front Public Health 2023; 11:1100437. [PMID: 37020816 PMCID: PMC10067628 DOI: 10.3389/fpubh.2023.1100437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/03/2023] [Indexed: 03/22/2023] Open
Abstract
SignificanceHigher prevalence of myopia is possibly associated with more extended schooling schedules. Therefore, adjustments to high school curricula may aid in reducing the prevalence of myopia among adolescents.PurposeTo investigate the prevalence of myopia among 15- to 18-year-old adolescents in Tianjin, China, and to evaluate the impact of different educational schedules on the prevalence of myopia among high school students.MethodsThis is a school-based epidemiological study with a cross-sectional design. Ocular biological parameters and noncycloplegic photorefraction were examined using optical biometry devices and photoscreener devices. Each student’s spherical equivalent (SE) and ocular biometry were recorded, and the prevalence of myopia was calculated.ResultsA total of 2,867 participants (1,519 males and 1,348 females) were tested for non-cycloplegic refraction, axial length (AL), central corneal thickness (CCT), anterior chamber depth (ACD) and lens thickness (LT). In this research, the overall prevalence of myopia was 81.6%, with high myopia accounting for 11.8%. Myopia prevalence was substantially higher in general high schools than in vocational high schools, with 86.1 and 70.1%, respectively. There were no significant differences in the prevalence of myopia (p = 0.744) or high myopia (p = 0.851) across the three vocational school years. In the general high school, however, there was an increase of 4.6% (p < 0.05) in myopia prevalence between year 10 and year12.ConclusionComparing vocational and standard high school students, there are considerable disparities in prevalence of myopia, spherical equivalent, and ocular biological parameters. The prevalence of myopia and high myopia increased among standard high school students, but remained relatively consistent among students in vocational schools.
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Affiliation(s)
- Yang Liu
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Visual Science, Nankai University Affiliated Eye Hospital, Clinical College of Ophthalmology Tianjin Medical University, Tianjin, China
| | - Dexin Meng
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yun Wang
- Tianjin Occupational Diseases Precaution and Therapeutic Hospital (Tianjin Workers’ Hospital), Tianjin, China
| | - Xuechun Wang
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Visual Science, Nankai University Affiliated Eye Hospital, Clinical College of Ophthalmology Tianjin Medical University, Tianjin, China
| | - Caihong Xue
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Visual Science, Nankai University Affiliated Eye Hospital, Clinical College of Ophthalmology Tianjin Medical University, Tianjin, China
| | - Rui Hao
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Visual Science, Nankai University Affiliated Eye Hospital, Clinical College of Ophthalmology Tianjin Medical University, Tianjin, China
- *Correspondence: Rui Hao,
| | - Wei Zhang
- Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Visual Science, Nankai University Affiliated Eye Hospital, Clinical College of Ophthalmology Tianjin Medical University, Tianjin, China
- Wei Zhang,
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27
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Zeitz C, Roger JE, Audo I, Michiels C, Sánchez-Farías N, Varin J, Frederiksen H, Wilmet B, Callebert J, Gimenez ML, Bouzidi N, Blond F, Guilllonneau X, Fouquet S, Léveillard T, Smirnov V, Vincent A, Héon E, Sahel JA, Kloeckener-Gruissem B, Sennlaub F, Morgans CW, Duvoisin RM, Tkatchenko AV, Picaud S. Shedding light on myopia by studying complete congenital stationary night blindness. Prog Retin Eye Res 2023; 93:101155. [PMID: 36669906 DOI: 10.1016/j.preteyeres.2022.101155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 12/02/2022] [Accepted: 12/05/2022] [Indexed: 01/20/2023]
Abstract
Myopia is the most common eye disorder, caused by heterogeneous genetic and environmental factors. Rare progressive and stationary inherited retinal disorders are often associated with high myopia. Genes implicated in myopia encode proteins involved in a variety of biological processes including eye morphogenesis, extracellular matrix organization, visual perception, circadian rhythms, and retinal signaling. Differentially expressed genes (DEGs) identified in animal models mimicking myopia are helpful in suggesting candidate genes implicated in human myopia. Complete congenital stationary night blindness (cCSNB) in humans and animal models represents an ON-bipolar cell signal transmission defect and is also associated with high myopia. Thus, it represents also an interesting model to identify myopia-related genes, as well as disease mechanisms. While the origin of night blindness is molecularly well established, further research is needed to elucidate the mechanisms of myopia development in subjects with cCSNB. Using whole transcriptome analysis on three different mouse models of cCSNB (in Gpr179-/-, Lrit3-/- and Grm6-/-), we identified novel actors of the retinal signaling cascade, which are also novel candidate genes for myopia. Meta-analysis of our transcriptomic data with published transcriptomic databases and genome-wide association studies from myopia cases led us to propose new biological/cellular processes/mechanisms potentially at the origin of myopia in cCSNB subjects. The results provide a foundation to guide the development of pharmacological myopia therapies.
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Affiliation(s)
- Christina Zeitz
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France.
| | - Jérome E Roger
- Paris-Saclay Institute of Neuroscience, CERTO-Retina France, CNRS, Université Paris-Saclay, Saclay, France
| | - Isabelle Audo
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France; CHNO des Quinze-Vingts, INSERM-DGOS CIC 1423, Paris, France
| | | | | | - Juliette Varin
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
| | - Helen Frederiksen
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
| | - Baptiste Wilmet
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
| | - Jacques Callebert
- Service of Biochemistry and Molecular Biology, INSERM U942, Hospital Lariboisière, APHP, Paris, France
| | | | - Nassima Bouzidi
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
| | - Frederic Blond
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
| | | | - Stéphane Fouquet
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
| | | | - Vasily Smirnov
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
| | - Ajoy Vincent
- Department of Ophthalmology and Vision Sciences, The Hospital for Sick Children, Toronto, ON, Canada; Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, ON, Canada; Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, ON, Canada
| | - Elise Héon
- Department of Ophthalmology and Vision Sciences, The Hospital for Sick Children, Toronto, ON, Canada; Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, ON, Canada; Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, ON, Canada
| | - José-Alain Sahel
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France; CHNO des Quinze-Vingts, INSERM-DGOS CIC 1423, Paris, France; Department of Ophthalmology, The University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | | | - Florian Sennlaub
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
| | - Catherine W Morgans
- Department of Chemical Physiology & Biochemistry, Oregon Health & Science University, Portland, OR, USA
| | - Robert M Duvoisin
- Department of Chemical Physiology & Biochemistry, Oregon Health & Science University, Portland, OR, USA
| | - Andrei V Tkatchenko
- Oujiang Laboratory, Zhejiang Laboratory for Regenerative Medicine, Vision and Brain Health, Wenzhou, China; Department of Ophthalmology, Edward S. Harkness Eye Institute, Columbia University, New York, NY, USA
| | - Serge Picaud
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
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Seasonal Variations in Ocular Axial Length Increase among Children in the Czech Republic. J Ophthalmol 2023; 2023:2592853. [PMID: 36817325 PMCID: PMC9937750 DOI: 10.1155/2023/2592853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 11/07/2022] [Accepted: 11/25/2022] [Indexed: 02/12/2023] Open
Abstract
In recent decades, the prevalence of myopia has increased worldwide as well as in European countries, and it has become an important medical and socioeconomic problem. Our prospective single-center study analysed the changes in ocular axial length (AXL) in a population of Central European schoolchildren from 2016 to 2019. The study included 528 eyes of 264 children with a mean age of 12.2 years at the beginning of the study. Visual acuity, ocular AXL, anterior chamber depth, and the questionnaire were examined at 6-month intervals (in spring and autumn, following the winter and summer periods, respectively). The average ocular AXL was 23.329 mm (median: 23.315 mm) at the beginning of the study and 23.525 mm (median: 23.505 mm) at the end of the study. The change in ocular AXL per month was significantly higher (p < 0.0001) during the winter period (average: 0.013 mm, median: 0.011 mm) than during the summer period (average: -0.001 mm, median: 0.000 mm). We observed a significantly higher increase in ocular AXL in a Caucasian population during the winter period (with lower daylight exposure) than the summer period.
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Zhu Z, Chen Y, Tan Z, Xiong R, McGuinness MB, Müller A. Interventions recommended for myopia prevention and control among children and adolescents in China: a systematic review. Br J Ophthalmol 2023; 107:160-166. [PMID: 34844916 DOI: 10.1136/bjophthalmol-2021-319306] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 11/09/2021] [Indexed: 01/25/2023]
Abstract
In 2018, a consortium of government bodies in China led by the Ministry of Education released the Comprehensive Plan to Prevent Nearsightedness among Children and Teenagers (CPPNCT), aiming to reduce the incidence of myopia and control myopic progression in China. Recommendations span from home-based to school-based interventions, including time outdoors, physical activity, light exposure, near-work activity, screen time, Chinese eye exercises, diet and sleep. To date, the levels of evidence for this suite of interventions have not been thoroughly investigated. This review has summarised the evidence of the interventions recommended by the CPPNCT in myopia prevention and control. Thus, the following statements are supposed by the evidence: (1) Increasing time outdoors and reducing near-work time are effective in lowering incident myopia in school-aged children. (2) All interventions have a limited effect on myopia progression. Ongoing research may lead to a better understanding of the underlying mechanisms of myopia development, the interaction of different interventions and recommendations, confounding variables and their true effect on myopia prevention, and the identification of those most likely to respond to specific interventions. This field may also benefit from longer-term studies of the various interventions or strategies covered within this review article, to better understand the persistence of treatment effects over time and explore more novel approaches to myopia control.
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Affiliation(s)
- Zhuoting Zhu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yanxian Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Zachary Tan
- Centre for Eye Research Australia, East Melbourne, Victoria, Australia
| | - Ruilin Xiong
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Myra Beth McGuinness
- Centre for Eye Research Australia, East Melbourne, Victoria, Australia.,Centre for Epidemiology and Biostatistics, The University of Melbourne, Melbourne, Victoria, Australia
| | - Andreas Müller
- Department of Noncommunicable Diseases, World Health Organization, Geneva, Switzerland
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Yuan S, Huang X, Zhang S, Yang S, Rui X, Qi X, Wang X, Zheng Y, Rong W, Sheng X. Two novel variations in LRP2 cause Donnai-Barrow syndrome in a Chinese family with severe early-onset high myopia. Front Genet 2023; 14:1107347. [PMID: 36777721 PMCID: PMC9911814 DOI: 10.3389/fgene.2023.1107347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 01/17/2023] [Indexed: 02/14/2023] Open
Abstract
Donnai-Barrow syndrome (DBS) is a rare autosomal recessive disorder caused by mutation in the low density lipoprotein receptor-related protein 2 gene (LRP2). Defects in this protein may lead to clinical multiple organ malformations by affecting the development of organs such as the nervous system, eyes, ears, and kidneys. Although some variations on LRP2 have been found to be associated with DBS, early diagnosis and prevention of patients with atypical DBS remains a challenge for many physicians because of their clinical heterogeneity. The objective of this study is to explore the association between the clinical presentation and the genotype of a DBS patient who was initially diagnosed with early-onset high myopia (eoHM) from a healthy Chinese family. To this end, we tested the patient of this family via whole exome sequencing and further verified the results among other family members by Sanger sequencing. Comprehensive ophthalmic tests as well as other systemic examinations were also performed on participants with various genotypes. Genetic assessment revealed that two novel variations in LRP2, a de novo missense variation (c.9032G>A; p.Arg3011Lys) and a novel splicing variation (c.2909-2A>T) inherited from the father, were both carried by the proband in this family, and they are strongly associated with the typical clinical features of DBS patients. Therefore, in this paper we are the first to report two novel compound heterozygous variations in LPR2 causing DBS. Our study extends the genotypic spectrums for LPR2-DBS and better assists physicians in predicting, diagnosing, and conducting gene therapy for DBS.
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Affiliation(s)
- Shiqin Yuan
- Ningxia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region, Third Clinical Medical College of Ningxia Medical University, Yinchuan, China
| | - Xiaoyu Huang
- Ningxia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region, Third Clinical Medical College of Ningxia Medical University, Yinchuan, China,Clinical Medical College, Ningxia Medical University, Yinchuan, China
| | - Shuang Zhang
- Ningxia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region, Third Clinical Medical College of Ningxia Medical University, Yinchuan, China
| | - Shangying Yang
- Ningxia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region, Third Clinical Medical College of Ningxia Medical University, Yinchuan, China,Clinical Medical College, Ningxia Medical University, Yinchuan, China
| | - Xue Rui
- Gansu Aier Ophthalmology and Optometry Hospital, Lanzhou, China
| | - Xiaolong Qi
- Ningxia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region, Third Clinical Medical College of Ningxia Medical University, Yinchuan, China
| | - Xuhui Wang
- Ningxia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region, Third Clinical Medical College of Ningxia Medical University, Yinchuan, China
| | - Yali Zheng
- Department of Kidney Internal Medicine, People’s Hospital of Ningxia Hui Autonomous Region, Third Clinical Medical College of Ningxia Medical University, Yinchuan, China
| | - Weining Rong
- Ningxia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region, Third Clinical Medical College of Ningxia Medical University, Yinchuan, China,*Correspondence: Xunlun Sheng, ; Weining Rong,
| | - Xunlun Sheng
- Gansu Aier Ophthalmology and Optometry Hospital, Lanzhou, China,*Correspondence: Xunlun Sheng, ; Weining Rong,
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Althnayan YI, Almotairi NM, Alharbi MM, Alamer HB, Alqahtani HB, Alfreihi S. Myopia Progression Among School-Aged Children in the COVID-19 Distance-Learning Era. Clin Ophthalmol 2023; 17:283-290. [PMID: 36711259 PMCID: PMC9880015 DOI: 10.2147/opth.s381061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 01/06/2023] [Indexed: 01/21/2023] Open
Abstract
Objective To investigate the effect of online learning and other environmental factors on myopia progression during the Coronavirus pandemic (COVID-19). Methods A retrospective cohort study from 2018 to 2021. Data from children aged 6-14 were gathered during three visits: pre-pandemic, at the beginning, and during the pandemic. Demographics (hours spent on screens for educational, recreational purposes, outdoors, and type of screen), best-corrected distance visual acuity (BCDVA), uncorrected distance visual acuity (UCDVA), and cycloplegic refraction were gathered. Results Of 150 patients, 70 [47%] were boys. The mean age was 11 (2.4) years. Participants mainly used mobile phones (62%) and had insufficient outdoor play (88%). Of the 300 eyes, 221 (74%) showed myopia progression. A significant difference in spherical equivalent (SE) was found between pre-pandemic and post-pandemic periods (-0.29 (0.23) D vs -0.40 (0.11) D; p =0.023). Additionally, UCDVA showed a difference between the initial and 1st follow-up visits (0.57 (0.37) vs 0.64 (0.36), p =0.001), and the first and 2nd follow-up visits (0.64 (0.36) vs 0.70 (0.36), p =0.001). Significant hazard ratio for change in SE in patients with higher age (>9 years), (HR [95% confidence interval (CI)], 0.71 [0.51-0.84]), greater recreational screen usage (HR [95% CI], 1.26 [1.15-1.66]), and insufficient outdoor time (HR [95% CI], 1.45 [1.35-1.67]). Conclusion Myopia progression was accelerated during the COVID-19 pandemic. Younger age, prolonged screen use, and insufficient outdoor time contributed to increased myopia progression. However, the type of device used had no significant effect.
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Affiliation(s)
- Yasser I Althnayan
- Ophthalmology Division, Department of Surgery, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia,King Abdullah International Medical Research Centre, Riyadh, Saudi Arabia
| | - Nawal M Almotairi
- King Abdullah International Medical Research Centre, Riyadh, Saudi Arabia,Department of Optometry, College of Applied Medical Science, King Saud University, Riyadh, Riyadh Province, Saudi Arabia
| | - Manal M Alharbi
- King Abdullah International Medical Research Centre, Riyadh, Saudi Arabia,Department of Optometry, College of Applied Medical Science, King Saud University, Riyadh, Riyadh Province, Saudi Arabia
| | - Hadeel B Alamer
- King Abdullah International Medical Research Centre, Riyadh, Saudi Arabia,Paediatric Ophthalmology Division, Paediatric Surgery Department, Ministry of National Guard - Health Affairs, Riyadh, Saudi Arabia
| | - Hanan B Alqahtani
- King Abdullah International Medical Research Centre, Riyadh, Saudi Arabia,Department of Optometry, College of Applied Medical Science, King Saud University, Riyadh, Riyadh Province, Saudi Arabia,Paediatric Ophthalmology Division, Paediatric Surgery Department, Ministry of National Guard - Health Affairs, Riyadh, Saudi Arabia
| | - Shatha Alfreihi
- King Abdullah International Medical Research Centre, Riyadh, Saudi Arabia,Paediatric Ophthalmology Division, Paediatric Surgery Department, Ministry of National Guard - Health Affairs, Riyadh, Saudi Arabia,College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia,Correspondence: Shatha Alfreihi, King Abdullah Specialist Children’s Hospital, P.O. Box 22490, Riyadh, 11426, Saudi Arabia, Tel +966-11-8011111, Fax +966-11-8011000 EXT 53273, 53320, Email
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Zhou H, Bai X. A Review of the Role of the School Spatial Environment in Promoting the Visual Health of Minors. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:1006. [PMID: 36673762 PMCID: PMC9859487 DOI: 10.3390/ijerph20021006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 12/28/2022] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
Rising childhood myopia rate has detrimental health consequences that pose a considerable challenge to health systems. The school spatial environment, which is where students are for the longest period of time, has a high health value for myopia systematic intervention. While research has demonstrated associations between physical daylight environments, medical gene and visual health, the literature currently lacks a synthesis of evidence that will act as a spatially-organized resource for school designers. This study is based on literature from the period 2000-2022 and has been taken from the Web of Science, scopus, Medline and CNKI core collection database. Collaboration, literature co-citation and quantitative and qualitative analysis, in addition to keyword co-occurrence are adopted to conduct a visual health research review. The results indicate that intensive near work activity (as a risk factor) and longer time spent outdoors (as a protective factor), are involved in visual health factors. Two main research themes are obtained and relate to: (1) The environment of visual work behavior (especially the near work learning environment) and adaptable multimedia learning environment; and (2) the environment of outdoor exposure behavior. Furthermore, with the variation of educational demands, models and concepts, there are different demands for near work behavior, and this study makes an important contribution by pointing to two future research directions, including the accurate and controllable environment of near work behavior, which operate in accordance with various educational mode requirements and the active design of the environment of outdoor exposure behavior. In referring to differences between regions and countries, as well as the development of the educational environment, it provides insight into how these demands can be controlled.
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Affiliation(s)
- Huihui Zhou
- School of Architecture and Urban Planning, Huazhong University of Science and Technology, Wuhan 430074, China
- Hubei Engineering and Technology Research Center of Urbanization, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaoxia Bai
- School of Architecture and Urban Planning, Huazhong University of Science and Technology, Wuhan 430074, China
- Hubei Engineering and Technology Research Center of Urbanization, Huazhong University of Science and Technology, Wuhan 430074, China
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Dutheil F, Oueslati T, Delamarre L, Castanon J, Maurin C, Chiambaretta F, Baker JS, Ugbolue UC, Zak M, Lakbar I, Pereira B, Navel V. Myopia and Near Work: A Systematic Review and Meta-Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:875. [PMID: 36613196 PMCID: PMC9820324 DOI: 10.3390/ijerph20010875] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/23/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Myopia is a global public health problem affecting quality of life and work productivity. Data is scarce regarding the effects of near work on myopia. Providing a larger meta-analysis with life-long perspective, including adults and occupational exposure seemed needed. METHODS We searched PubMed, Cochrane Library, Embase and Science Direct for studies reporting myopia prevalence in near work. Myopia was defined as a mean spherical equivalent ≤ -0.50 diopter. We performed a meta-analysis using random-effects model on myopia prevalence, myopia progression per year, and odds ratio (OR) of myopia in near work, completed by subgroup analyses and meta-regressions on patients' characteristics, type of work in adults, geographic zones, time and characteristics of near work. RESULTS We included 78 studies, representing a total of 254,037 participants, aged from 6 to 39 years. The global prevalence of myopia in near work was 35% (95% CI: 30 to 41%), with a prevalence of 31% (95% CI: 26 to 37%) in children and 46% (95% CI: 30 to 62%) in adults. Myopia progression was -0.39 diopters per year (-0.53 to -0.24 D/year), ranging from -0.44 (-0.57 to -0.31) in children to -0.25 D/year (-0.56 to 0.06) in adults. The odds of myopia in workers exposed vs. non-exposed to near work were increased by 26% (18 to 34%), by 31% (21 to 42%) in children and 21% (6 to 35%) in adults. Prevalence of myopia was higher in adults compared to children (Coefficient 0.15, 95% CI: 0.03 to 0.27). CONCLUSIONS Near work conditions, including occupational exposure in adults, could be associated with myopia. Targeted prevention should be implemented in the workplace.
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Affiliation(s)
- Frédéric Dutheil
- Preventive and Occupational Medicine, University Hospital of Clermont-Ferrand, Physiological and Psychosocial Stress, CNRS, LaPSCo, Université Clermont Auvergne, WittyFit, 63001 Clermont-Ferrand, France
| | - Tharwa Oueslati
- Ophthalmology, University Hospital of Clermont-Ferrand (CHU), 63001 Clermont-Ferrand, France
| | - Louis Delamarre
- Preventive and Occupational Medicine, University Hospital of Clermont-Ferrand, Physiological and Psychosocial Stress, CNRS, LaPSCo, Université Clermont Auvergne, WittyFit, 63001 Clermont-Ferrand, France
- Department of Anesthesiology and Intensive Care, University Hospital of Marseille, Hopital Nord—Assistance Publique Hôpitaux de Marseille, 13015 Marseille, France
| | - Joris Castanon
- Ophthalmology, University Hospital of Clermont-Ferrand (CHU), 63001 Clermont-Ferrand, France
| | - Caroline Maurin
- Ophthalmology, University Hospital of Clermont-Ferrand (CHU), 63001 Clermont-Ferrand, France
| | - Frédéric Chiambaretta
- Ophthalmology, University Hospital of Clermont-Ferrand (CHU), 63001 Clermont-Ferrand, France
| | - Julien S. Baker
- Centre for Health and Exercise Science Research, Physical Education and Health, Kowloon Tong, Hong Kong Baptist University, Hong Kong
| | - Ukadike C. Ugbolue
- School of Health and Life Sciences, University of the West of Scotland, Glasgow G72 0LH, UK
| | - Marek Zak
- Faculty of Medicine and Health Sciences, Institute of Physiotherapy, The Jan Kochanowski University, 25-369 Kielce, Poland
| | - Ines Lakbar
- Department of Anesthesiology and Intensive Care, University Hospital of Marseille, Hopital Nord—Assistance Publique Hôpitaux de Marseille, 13015 Marseille, France
| | - Bruno Pereira
- Biostatitics, Clinical Research Direction, University Hospital of Clermont-Ferrand (CHU), 63001 Clermont-Ferrand, France
| | - Valentin Navel
- Ophthalmology, University Hospital of Clermont-Ferrand (CHU), 63001 Clermont-Ferrand, France
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Myopia: why the retina stops inhibiting eye growth. Sci Rep 2022; 12:21704. [PMID: 36522540 PMCID: PMC9755470 DOI: 10.1038/s41598-022-26323-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
In myopia, the eye grows too long, and the image projected on the retina is poorly focused when subjects look at a distance. While the retina normally controls eye growth by visual processing, it seems to give up during myopia development. But what has changed? To determine whether the sharp image is in front or behind the retinal plane, a comparison of image sharpness in red and blue would provide a reliable cue because focal planes are about 1.3 D apart due to longitudinal chromatic aberration (LCA). However, up to now, it could not be demonstrated that the retina does, in fact, such a comparison. We used a new approach: movies were digitally filtered in real time to present either the blue channel of the RGB color format unfiltered while green and red were blurred ("blue in focus"), or the red channel was unfiltered while green and blue were blurred ("red in focus") accordingly to the human LCA function. Here we show that, even though filtered movies looked similar, eyes became significantly shorter when the movie was sharp in the red plane but became longer when it was presented sharp in the blue plane. Strikingly, the eyes of young subjects who were already myopic did not respond at all-showing that their retina could no longer decode the sign of defocus based on LCA. Our findings resolve a long-standing question as to how the human retina detects the sign of defocus. It also suggests a new non-invasive strategy to inhibit early myopia development: keeping the red image plane on a computer screen sharp but low pass filtering the blue.
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Dutt DDCS, Yazar S, Charng J, Mackey DA, Chen FK, Sampson DM. Correcting magnification error in foveal avascular zone area measurements of optical coherence tomography angiography images with estimated axial length. EYE AND VISION 2022; 9:29. [PMID: 35909098 PMCID: PMC9341098 DOI: 10.1186/s40662-022-00299-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 07/06/2022] [Indexed: 12/04/2022]
Abstract
Background To generate and validate a method to estimate axial length estimated (ALest) from spherical equivalent (SE) and corneal curvature [keratometry (K)], and to determine if this ALest can replace actual axial length (ALact) for correcting transverse magnification error in optical coherence tomography angiography (OCTA) images using the Littmann-Bennett formula. Methods Data from 1301 participants of the Raine Study Gen2-20 year follow-up were divided into two datasets to generate (n = 650) and validate (n = 651) a relationship between AL, SE, and K. The developed formula was then applied to a separate dataset of 46 participants with AL, SE, and K measurements and OCTA images to estimate and compare the performance of ALest against ALact in correcting transverse magnification error in OCTA images when measuring the foveal avascular zone area (FAZA). Results The formula for ALest yielded the equation: ALest = 2.102K − 0.4125SE + 7.268, R2 = 0.794. There was good agreement between ALest and ALact for both study cohorts. The mean difference [standard deviation (SD)] between FAZA corrected with ALest and ALact was 0.002 (0.015) mm2 with the 95% limits of agreement (LoA) of − 0.027 to 0.031 mm2. In comparison, mean difference (SD) between FAZA uncorrected and corrected with ALact was − 0.005 (0.030) mm2, with 95% LoA of − 0.064 to 0.054 mm2. Conclusions ALact is more accurate than ALest and hence should be used preferentially in magnification error correction in the clinical setting. FAZA corrected with ALest is comparable to FAZA corrected with ALact, while FAZA measurements using images corrected with ALest have a greater accuracy than measurements on uncorrected images. Hence, in the absence of ALact, clinicians should use ALest to correct for magnification error as this provides for more accurate measurements of fundus parameters than uncorrected images. Supplementary Information The online version contains supplementary material available at 10.1186/s40662-022-00299-x.
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36
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Huang Y, Chen X, Zhuang J, Yu K. The Role of Retinal Dysfunction in Myopia Development. Cell Mol Neurobiol 2022:10.1007/s10571-022-01309-1. [DOI: 10.1007/s10571-022-01309-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 11/16/2022] [Indexed: 11/27/2022]
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You Y, Fu J, Xu M, Song Y, Zhou H, Wei S. Prevalence of refractive error among Chinese preschool children: The Changsha children eye study. Front Public Health 2022; 10:1019816. [PMID: 36483253 PMCID: PMC9722943 DOI: 10.3389/fpubh.2022.1019816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 10/31/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose We aimed to investigate the refractive status and prevalence of refractive error, as well as its characteristics in Chinese preschool children aged 1-6 years old. Methods A population-based cross-sectional study-Changsha Children Eye Study (CCES) was conducted. The prevalence of refractive errors among children aged 1-6 years old from 18 community health service centers was surveyed. A handheld child vision screener, Suowei, was used for examination. Results A total of 43,105 preschool children were included. The mean spherical equivalent (SE) was 0.42 ± 1.05 D for the right eyes. The mean astigmatism (diopter of cylinder, DC) was -0.83 ± 1.02 D for the right eyes. The magnitude of refractive error was lower in older children, indicating the ongoing of the emmetropization during the 1-6-year-old children. The prevalence of myopia (SE ≤ -1.00 D), hyperopia (SE ≥ +2.00 D) and astigmatism (DC ≥1.50 D) was 2.94, 13.8 and 17.6%, respectively. The prevalence of myopia decreased with the increase of age between the six age groups (P < 0.001). The prevalence of hyperopia was lower in 5-6 years old, whereas, the prevalence of myopia was slightly higher at this period of time. With-the-rule (WTR) astigmatism (+ cylinder axis 90° ± 15°) was the most prevalent type of astigmatism than against-the-rule (ATR) astigmatism (+ cylinder axis 180° ± 15°) and oblique (OBL) astigmatism (X 2 = 209.5, P < 0.001). The binary logistic regression model showed that older age and suffering astigmatism were independently associated with the development of myopia. In addition, there was no significant gender difference in the prevalence of myopia, emmetropia, and hyperopia. Conclusions Our population-based cross-sectional study investigated the prevalence of myopia, hyperopia, and astigmatism in preschool children aged 1-6 years old. The distribution of the refractive error was disperse in the younger group and gradually turned more centralized in older group. Similar to hyperopia, with age increased, the prevalence of myopia was lower in preschool children younger than 5 years old and then slightly increased at 5-6 years, which may indicate an early sign of myopia in school-age children. Therefore, we emphasize that more attention should be given to the children at this age.
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Affiliation(s)
- Yuxia You
- Beijing Aier Intech Eye Hospital, Beijing, China,Aier Eye Hospital Group, Changsha, Hunan, China,Department of Ophthalmology, The Chinese People's Liberation Army Medical School, The Chinese People's Liberation Army General Hospital, Beijing, China
| | - Junxia Fu
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ming Xu
- Aier Eye Hospital Group, Changsha, Hunan, China
| | - Yali Song
- Aier Eye Hospital Group, Changsha, Hunan, China
| | - Huanfen Zhou
- Department of Ophthalmology, The Chinese People's Liberation Army Medical School, The Chinese People's Liberation Army General Hospital, Beijing, China
| | - Shihui Wei
- Department of Ophthalmology, The Chinese People's Liberation Army Medical School, The Chinese People's Liberation Army General Hospital, Beijing, China,*Correspondence: Shihui Wei
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Clark R, Pozarickij A, Hysi PG, Ohno-Matsui K, Williams C, Guggenheim JA. Education interacts with genetic variants near GJD2, RBFOX1, LAMA2, KCNQ5 and LRRC4C to confer susceptibility to myopia. PLoS Genet 2022; 18:e1010478. [PMID: 36395078 PMCID: PMC9671369 DOI: 10.1371/journal.pgen.1010478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 10/14/2022] [Indexed: 11/19/2022] Open
Abstract
Myopia most often develops during school age, with the highest incidence in countries with intensive education systems. Interactions between genetic variants and educational exposure are hypothesized to confer susceptibility to myopia, but few such interactions have been identified. Here, we aimed to identify genetic variants that interact with education level to confer susceptibility to myopia. Two groups of unrelated participants of European ancestry from UK Biobank were studied. A 'Stage-I' sample of 88,334 participants whose refractive error (avMSE) was measured by autorefraction and a 'Stage-II' sample of 252,838 participants who self-reported their age-of-onset of spectacle wear (AOSW) but who did not undergo autorefraction. Genetic variants were prioritized via a 2-step screening process in the Stage-I sample: Step 1 was a genome-wide association study for avMSE; Step 2 was a variance heterogeneity analysis for avMSE. Genotype-by-education interaction tests were performed in the Stage-II sample, with University education coded as a binary exposure. On average, participants were 58 years-old and left full-time education when they were 18 years-old; 35% reported University level education. The 2-step screening strategy in the Stage-I sample prioritized 25 genetic variants (GWAS P < 1e-04; variance heterogeneity P < 5e-05). In the Stage-II sample, 19 of the 25 (76%) genetic variants demonstrated evidence of variance heterogeneity, suggesting the majority were true positives. Five genetic variants located near GJD2, RBFOX1, LAMA2, KCNQ5 and LRRC4C had evidence of a genotype-by-education interaction in the Stage-II sample (P < 0.002) and consistent evidence of a genotype-by-education interaction in the Stage-I sample. For all 5 variants, University-level education was associated with an increased effect of the risk allele. In this cohort, additional years of education were associated with an enhanced effect of genetic variants that have roles including axon guidance and the development of neuronal synapses and neural circuits.
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Affiliation(s)
- Rosie Clark
- School of Optometry & Vision Sciences, Cardiff University, Cardiff, United Kingdom
| | - Alfred Pozarickij
- School of Optometry & Vision Sciences, Cardiff University, Cardiff, United Kingdom
| | - Pirro G. Hysi
- Section of Ophthalmology, School of Life Course Sciences, King’s College London, London, United Kingdom
- Department of Twin Research and Genetic Epidemiology, School of Life Course Sciences, King’s College London, London, United Kingdom
| | - Kyoko Ohno-Matsui
- Department of Ophthalmology and Visual Science, Tokyo Medical and Dental University, Tokyo, Japan
| | - Cathy Williams
- Centre for Academic Child Health, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Jeremy A. Guggenheim
- School of Optometry & Vision Sciences, Cardiff University, Cardiff, United Kingdom
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Fu Q, Zhang Y, Chen L, Dong M, Tang W, Chen S, Qu J, Zhou X, Zhi Z. Near work induces myopia in Guinea pigs. Exp Eye Res 2022; 224:109202. [PMID: 35961425 DOI: 10.1016/j.exer.2022.109202] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 07/11/2022] [Accepted: 07/19/2022] [Indexed: 11/17/2022]
Abstract
The association between near work activities and myopia has not been clearly established. This study establishes a model for near work myopia (NWM) induced by short viewing distance in guinea pigs with a carefully controlled visual environment, and evaluates the effect of viewing distance in myopia development. Pigmented guinea pigs (3 weeks old) were randomly assigned to 3 groups: near work (NW)-, form-deprivation (FD)-, and -4D hyperopic-defocus (HD)-induced myopia. Animals in NW groups were kept in cylindrical cages with vertical square-wave gratings, providing short- (S, d = 18 cm), middle- (M, d = 44 cm), and long- (L, d = 88 cm) mean viewing distances, all at the same illuminance, during daily treatment for 14 days. Biometric parameters, including refraction, anterior chamber depth (ACD), lens thickness (LT), vitreous chamber depth (VCD), and axial length (AL), were measured at the beginning and end of 14 days' treatment. Choroidal thickness (ChT) and choroidal blood perfusion (ChBP) were measured by optical coherence tomography (OCT) and OCT-angiography (OCTA), respectively, at the end of treatment. Refraction was shifted towards myopia in the S-cage group, compared with the M- and L-cage groups; refractions in the L-, M- and S-cage groups were 5.19 ± 0.65 D, 4.30 ± 0.64 D, and 0.53 ± 0.61 D, respectively (p < 0.001). VCD and AL in the S-cage group increased in parallel with the myopic shift (L vs M vs S: VCD: 3.15 ± 0.02 mm vs 3.17 ± 0.02 mm vs 3.26 ± 0.02 mm, p < 0.001; AL: 7.99 ± 0.03 mm vs 8.03 ± 0.03 mm vs 8.15 ± 0.02 mm, p = 0.001). In FD and HD eyes, changes similar to those in the S-cage group (near-work group, NW) were seen in refraction (NW vs FD vs HD: 5.36 ± 0.82 D vs -5.78 ± 0.44 D vs -4.96 ± 0.54 D, p = 0.734), ACD, LT, VCD and AL. Also, ChT and ChBP were significantly less in the S-cage group than in the M- and L-cage groups after 14 days' treatment (L vs M vs S: ChT: 74.84 ± 3.27 vs 76.07 ± 3.49 vs 61.95 ± 3.31, P = 0.002; ChBP: 48.32 ± 2.23 vs 48.66 ± 2.30 vs 38.14 ± 2.06, p = 0.002). Rearing in S-cages induced myopia in guinea pigs and correspondingly decreased ChBP and ChT. The present study provides objective evidence that short viewing distance could be a risk factor for myopia, and describes a useful model for studying the underlying mechanisms.
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Affiliation(s)
- Qian Fu
- School of Optometry and Ophthalmology, and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325003, China; State Key Laboratory of Optometry, Ophthalmology, and Vision Science, Wenzhou, Zhejiang, 325003, China.
| | - Yue Zhang
- School of Optometry and Ophthalmology, and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325003, China; State Key Laboratory of Optometry, Ophthalmology, and Vision Science, Wenzhou, Zhejiang, 325003, China.
| | - Linji Chen
- School of Optometry and Ophthalmology, and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325003, China; State Key Laboratory of Optometry, Ophthalmology, and Vision Science, Wenzhou, Zhejiang, 325003, China.
| | - Mengmeng Dong
- School of Optometry and Ophthalmology, and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325003, China; State Key Laboratory of Optometry, Ophthalmology, and Vision Science, Wenzhou, Zhejiang, 325003, China.
| | - Wenyu Tang
- School of Optometry and Ophthalmology, and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325003, China; State Key Laboratory of Optometry, Ophthalmology, and Vision Science, Wenzhou, Zhejiang, 325003, China.
| | - Si Chen
- School of Optometry and Ophthalmology, and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325003, China; State Key Laboratory of Optometry, Ophthalmology, and Vision Science, Wenzhou, Zhejiang, 325003, China.
| | - Jia Qu
- School of Optometry and Ophthalmology, and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325003, China; State Key Laboratory of Optometry, Ophthalmology, and Vision Science, Wenzhou, Zhejiang, 325003, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325038, China; Research Unit of Myopia Basic Research and Clinical Prevention and Control, Chinese Academy of Medical Sciences, Wenzhou, 325027, China.
| | - Xiangtian Zhou
- School of Optometry and Ophthalmology, and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325003, China; State Key Laboratory of Optometry, Ophthalmology, and Vision Science, Wenzhou, Zhejiang, 325003, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325038, China; Research Unit of Myopia Basic Research and Clinical Prevention and Control, Chinese Academy of Medical Sciences, Wenzhou, 325027, China.
| | - Zhina Zhi
- School of Optometry and Ophthalmology, and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325003, China; State Key Laboratory of Optometry, Ophthalmology, and Vision Science, Wenzhou, Zhejiang, 325003, China.
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Assessing the contribution of genetic nurture to refractive error. Eur J Hum Genet 2022; 30:1226-1232. [PMID: 35618892 PMCID: PMC9626539 DOI: 10.1038/s41431-022-01126-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 05/10/2022] [Accepted: 05/16/2022] [Indexed: 02/04/2023] Open
Abstract
Parents pass on both their genes and environment to offspring, prompting debate about the relative importance of nature versus nurture in the inheritance of complex traits. Advances in molecular genetics now make it possible to quantify an individual's genetic predisposition to a trait via his or her 'polygenic score'. However, part of the risk captured by an individual's polygenic score may actually be attributed to the genotype of their parents. In the most well-studied example of this indirect 'genetic nurture' effect, about half the genetic contribution to educational attainment was found to be attributed to parental alleles, even if those alleles were not inherited by the child. Refractive errors, such as myopia, are a common cause of visual impairment and pose high economic and quality-of-life costs. Despite strong evidence that refractive errors are highly heritable, the extent to which genetic risk is conferred directly via transmitted risk alleles or indirectly via the environment that parents create for their children is entirely unknown. Here, an instrumental variable analysis in 1944 pairs of adult siblings from the United Kingdom was used to quantify the proportion of the genetic risk ('single nucleotide polymorphism (SNP) heritability') of refractive error contributed by genetic nurture. We found no evidence of a contribution from genetic nurture: non-within-family SNP-heritability estimate = 0.213 (95% confidence interval 0.134-0.310) and within-family SNP-heritability estimate = 0.250 (0.152-0.372). Our findings imply the genetic contribution to refractive error is principally an intrinsic effect from alleles transmitted from parents to offspring.
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Yang G, Zhang M, Ujihara H, Xu J, Zhou S. A Comparative Study on Visual Health and Physical Activity of Chinese and Japanese Children Aged 6-12 Years. Am J Health Behav 2022; 46:567-575. [PMID: 36333827 DOI: 10.5993/ajhb.46.5.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVES In this study, we compare the visual acuity levels and physical activity participation of Chinese and Japanese children. METHODS We collected data on static visual acuity, kinetic visual acuity, axial length, intensity, frequency, duration, amount, and physical activity items of 431 children aged 6-12 years from Chinese and Japanese schools in the same city. Our analysis examined the relationships involving age, visual function indicators, ocular biometric parameters, and extracurricular physical activity. RESULTS We found the myopia rate higher in Chinese children than in Japanese children, increasing with age except in grade 4; kinetic visual acuity in Chinese children was lower than in Japanese children (p<.01). The axial length becomes longer with age in both groups, with Chinese children having a longer axial length than Japanese children. The amount of physical activity in Chinese and Japanese children aged 6-12 years fluctuates. The frequency, duration, and physical activity items are lower in Chinese children than Japanese (p<.01). CONCLUSIONS Chinese and Japanese children's overall static visual acuity development level shows a decreasing trend, and Japanese children have better kinetic visual acuity and physical activity participation than Chinese children. Physical activity could have an impact on visual acuity.
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Affiliation(s)
- Ganfeng Yang
- School of Physical Education, Soochow University, Suzhou, China
| | - Meng Zhang
- School of Physical Education, Soochow University, Suzhou, China
| | | | - Jianrong Xu
- School of Physical Education, Soochow University, Suzhou, China
| | - Sheng Zhou
- School of Physical Education, Soochow University, Suzhou, China
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Xie J, Lu C, Zhu J. Screen time and myopia: A serial multiple mediator SEM analysis. Front Public Health 2022; 10:860098. [PMID: 36299744 PMCID: PMC9589147 DOI: 10.3389/fpubh.2022.860098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 07/29/2022] [Indexed: 01/21/2023] Open
Abstract
Background COVID-19 has influenced education systems worldwide, and significantly increased screen time for college students, posing a potential risk of myopia. In China, ninety percent of college students suffer from myopia. Excessive screen time changes college students' lifestyles, imposes potential health risks, and affects opportunities for employment. It is important to identify the potential correlation between screen time use and myopia among college students. Methods This paper conducted a nationwide experiment using Chinese college students and set a multiple-mediator SEM model to analyze the potential correlation between screen time and myopia. The two mediators were sedentary behavior and physical activity, respectively. Results We obtained three valuable conclusions as follows: First, there was no significant direct relationship between screen time and myopia among Chinese college students during the COVID-19 pandemic. Second, sedentary behavior and physical activity significantly predicted the increase/decrease of myopia among Chinese college students, respectively. Third, a serial multiple mediator that encompassed sedentary behavior and physical activity sequentially fully mediated the relationship between screen time and myopia. Conclusions Although there was no directly significant relationship between screen time and myopia, screen time can indirectly influence the risk of suffering myopia by influencing sedentary behavior and physical activity. Our study demonstrates the need to prevent the potential influence of overuse of electronic devices on myopia in college students, especially during the COVID-19 pandemic.
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Affiliation(s)
- Jinchen Xie
- Department of Sociology, Xi'an Jiaotong University, Xi'an, China
| | - Chuntian Lu
- Department of Sociology, Xi'an Jiaotong University, Xi'an, China
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Martínez-Pérez C, Pérez-Sánchez B, Villa-Collar C. Percentile curves of refractive errors in a Spanish paediatric population. JOURNAL OF OPTOMETRY 2022:S1888-4296(22)00057-7. [PMID: 36182658 DOI: 10.1016/j.optom.2022.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 07/30/2022] [Accepted: 08/22/2022] [Indexed: 06/16/2023]
Abstract
OBJECTIVE The main objective of this study was to obtain percentile curves of refractive errors in a Spanish paediatric population aged between 3 and 12 years. MATERIALS AND METHOD A descriptive, observational and cross-sectional study was conducted, including children aged between 3 and 12 years who did not present with any known ocular and/or systemic diseases. The convenience sampling method was used to select the sample from three schools and one hospital in the Community of Madrid. The refractive error was obtained using a Retinomax K-plus 3 autorefractometer (RTX; Right Mfg. Co. Ltd., Tokyo, Japan). The 5th, 10th, 25th, 50th, 75th, 90th and 95th percentiles were calculated using the IBM SPSS Statistics v.24 statistical software (IBM Corporation, Armonk, NY, United States). RESULTS A total of 688 children with a mean age of 7.68 ± 2.17 years were analysed. In the 50th percentile curve, spherical equivalent values started to become myopic at 3 years (SE < -0.50 D) and the 75th percentile curve also turned myopic at 4 years. As a result, it was observed that the spherical equivalent value became more negative with time, starting from the ages indicated above. Therefore, the 90th percentile curve was negative at 11 years. CONCLUSION Percentile curves of refractive errors in a Spanish paediatric population have been presented for the first time in order to help eyecare professionals detect children with refractive errors at an early age.
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Affiliation(s)
- Clara Martínez-Pérez
- SEC LISBOA-Instituto Superior de Educação e Ciências, 1750-179 Lisboa, Portugal.
| | - Belen Pérez-Sánchez
- Department of Statistics, Mathematics and Informatics, Miguel Hernández University, Elche, Spain.
| | - César Villa-Collar
- Department of Pharmacy, Biotechnology, Nutrition, Optics and Optometry, Faculty of Biomedical and Health Sciences, European University of Madrid, Madrid, Spain
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Norhani M, Low YC, Bariah MA, Mizhanim MS, Norlaili A. Corneal endothelial morphology of healthy myopic Malaysian children of Chinese ethnicity aged 8-9 years and its association with axial length. F1000Res 2022; 11:339. [PMID: 36111215 PMCID: PMC9459173 DOI: 10.12688/f1000research.110560.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/23/2022] [Indexed: 11/20/2022] Open
Abstract
Background: This is a cross-sectional study to further understand the effects of axial length elongation on the corneal endothelial cell’s morphology in myopic children. Abnormal changes in the morphology of corneal endothelium are indicators of corneal stress or instability which could be linked to myopia. Methods: 111 school children comprising of 37 emmetropes, 37 mild myopes and 37 moderate myopes aged 8-9 years old were recruited. Visual acuity was measured using the LogMar chart, cycloplegic refraction was determined using an open-field autorefractor (Grand Seiko WAM-5100, Hiroshima, Japan) and refined using subjective refraction. Morphology of corneal endothelial cells [endothelial cell density, coefficient of variation, hexagonality and central corneal thickness] was evaluated using a non-contact specular microscope (Topcon SP-2000P). Axial length was measured with A-scan ultrasound biometry (PacScan Plus, Sonomed Escalon, NY). The correlation between morphology of corneal endothelial cells and axial length were assessed using Pearson Correlation and Linear regression analysis. Results: There was no significant difference in corneal endothelial cells and axial length between gender (p>0.05). Significant reduction in endothelial cells density and hexagonality and increased coefficient of variation was found in eyes of higher myopic power which had longer axial when compared to emmetropes (p<0.001). Except for central corneal thickness, all corneal endothelial cells parameters correlated significantly with axial length (p<0.05). For every 1mm increase in axial length, endothelial cells density decreased by 73.27cells/mm2, hexagonality decreased by 2.32% and coefficient of variation increased by 1.75%. Conclusions: There were significant changes in morphology of cornea endothelial cells in young moderate myopic children of Chinese ethnicity at 8-9 years of age. This result provides normative data for Malaysian children of Chinese ethnicity that can be used for comparison and reference for clinical procedures, thereby facilitating decision-making with respect to interventions for myopia control, especially in prescribing contact lens for children.
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Affiliation(s)
- Mohidin Norhani
- Centre of Optometry, Faculty of Health Science, Universiti Teknologi MARA, Puncak Alam Campus, Selangor, 42300, Malaysia
| | - Yu Chen Low
- Optometry and Vision Science Program, Research Centre for Community Health, Faculty of Health Science, Universiti Kebangsaan Malaysia, Kuala Lumpur, 50300, Malaysia
| | - Mohd-Ali Bariah
- Optometry and Vision Science Program, Research Centre for Community Health, Faculty of Health Science, Universiti Kebangsaan Malaysia, Kuala Lumpur, 50300, Malaysia
| | - Mohamad Shahimin Mizhanim
- Optometry and Vision Science Program, Research Centre for Community Health, Faculty of Health Science, Universiti Kebangsaan Malaysia, Kuala Lumpur, 50300, Malaysia
| | - Arif Norlaili
- Optometry and Vision Science Program, Research Centre for Community Health, Faculty of Health Science, Universiti Kebangsaan Malaysia, Kuala Lumpur, 50300, Malaysia
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Sen S, Yadav H, Jain A, Verma S, Gupta P. Effect of atropine 0.01% on progression of myopia. Indian J Ophthalmol 2022; 70:3373-3376. [PMID: 36018124 DOI: 10.4103/ijo.ijo_256_22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Purpose Myopia is the most common type of refractive error and the leading cause of functional visual loss. Increased risk of myopic maculopathy, retinal detachment, glaucoma and cataract has been seen with a myopia of as low as -1D. This study was done to determine the effect of atropine 0.01% eye drops on the progression of myopia in children >5 years. Methods This was a single-blind, prospective, randomized case-control study which included children of 5-15 years with myopia of >2D and were divided into treatment group (group 1) and placebo group (group 2). Children under treatment group were treated with application of 0.01% atropine at night. Children with history of any ocular surgery, chronic ophthalmic illness, squint and amblyopia were excluded from the study. The follow-up for myopia progression was done for two years. Results This study showed a significant difference in increase of spherical equivalent and axial length among treatment and placebo groups after a duration of two years. Total duration of follow up was twenty-four months. Mean increase in axial length of group 1 and 2 was 0.115 mm and 0.32 mm, respectively. Mean increase in refraction of groups 1 and 2 was -0.30 D and -0.88 D, respectively, showing significant change in axial length and refraction (P < 0.0001). Conclusion This study supports the use of atropine 0.01% eye drops in reducing the progression of myopia.
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Affiliation(s)
- Snigdha Sen
- Department of Ophthalmology, Sarojini Naidu Medical College, Agra, Uttar Pradesh, India
| | - Himanshu Yadav
- Department of Ophthalmology, Sarojini Naidu Medical College, Agra, Uttar Pradesh, India
| | - Anu Jain
- Department of Ophthalmology, Sarojini Naidu Medical College, Agra, Uttar Pradesh, India
| | - Sadhna Verma
- Department of Ophthalmology, L.L.R.M. Medical College, Meerut, Uttar Pradesh, India
| | - Preeti Gupta
- Department of Ophthalmology, Sarojini Naidu Medical College, Agra, Uttar Pradesh, India
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Wang Y, Liu L, Lu Z, Qu Y, Ren X, Wang J, Lu Y, Liang W, Xin Y, Zhang N, Jin L, Wang L, Song J, Yu J, Zhao L, Ma X, Zhang L. Rural-urban differences in prevalence of and risk factors for refractive errors among school children and adolescents aged 6-18 years in Dalian, China. Front Public Health 2022; 10:917781. [PMID: 36106164 PMCID: PMC9465045 DOI: 10.3389/fpubh.2022.917781] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 08/08/2022] [Indexed: 01/22/2023] Open
Abstract
Purpose To assess the prevalence of refractive errors (REs) in school children aged 6-18 years in urban and rural settings in Dalian, Northeast of China. Methods This is a school-based cross-sectional survey using multi-stage randomization technique. Six- to eighteen-year-old school children from elementary schools, junior and senior high schools from a rural area and an urban area in Dalian were included in December 2018. All subjects underwent a comprehensive questionnaire and eye examination. Results A total of 4,522 school children with 6-18 years of age were investigated. The age, gender-adjusted prevalence of myopia, and anisometropia were 82.71 and 7.27% among the urban students as compared to 71.76% and 5.41% among the rural ones (OR = 1.80, 95 % CI = 1.53 - 2.11, P < 0.001; OR = 1.29, 95 % CI = 1.00-1.67, P = 0.049), respectively. The hyperopia was less common in urban students than in rural ones (5.63 vs. 10.21%; OR = 0.54, 95 % CI: 0.43-0.67, P < 0.001). However, there was no significant difference in prevalence of astigmatism between urban (46.07%) and rural (44.69%) participants (OR = 0.96, 95 % CI: 0.84-1.10, P = 0.559). The differences on prevalence of REs were attributed to different social-demographic and physiologic factors. Conclusions The students from urban settings are more likely to have myopia and anisometropia but less likely to have hyperopia than their rural counterparts. Although considerable attention had been paid to controlling REs, it is necessary to further consider the urban-rural differences in REs.
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Affiliation(s)
- Yachen Wang
- Department of Ophthalmology, The Third People's Hospital of Dalian, Dalian, China,Department of Ophthalmology, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian, China
| | - Lei Liu
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangzhou, China,Lei Liu
| | - Zhili Lu
- Department of Ophthalmology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | | | - Xianlong Ren
- Beijing Center for Diseases Prevention and Control, Beijing, China
| | - Jiaojiao Wang
- Department of Ophthalmology, The Third People's Hospital of Dalian, Dalian, China,Department of Ophthalmology, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian, China
| | - Yan Lu
- Department of Ophthalmology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Wei Liang
- Department of Ophthalmology, The Third People's Hospital of Dalian, Dalian, China,Department of Ophthalmology, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian, China
| | - Yue Xin
- Department of Ophthalmology, The Third People's Hospital of Dalian, Dalian, China,Department of Ophthalmology, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian, China
| | - Nan Zhang
- Department of Ophthalmology, The Third People's Hospital of Dalian, Dalian, China,Department of Ophthalmology, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian, China
| | - Lin Jin
- Department of Ophthalmology, The Third People's Hospital of Dalian, Dalian, China,Department of Ophthalmology, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian, China
| | - Lijing Wang
- Department of Ophthalmology, The Third People's Hospital of Dalian, Dalian, China,Department of Ophthalmology, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian, China
| | - Jian Song
- Department of Ophthalmology, The Third People's Hospital of Dalian, Dalian, China,Department of Ophthalmology, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian, China
| | - Jian Yu
- Department of Ophthalmology, The Third People's Hospital of Dalian, Dalian, China,Department of Ophthalmology, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian, China
| | - Lijun Zhao
- Department of Ophthalmology, The Third People's Hospital of Dalian, Dalian, China,Department of Ophthalmology, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian, China
| | - Xiang Ma
- Department of Ophthalmology, The First Affiliated Hospital of Dalian Medical University, Dalian, China,Xiang Ma
| | - Lijun Zhang
- Department of Ophthalmology, The Third People's Hospital of Dalian, Dalian, China,Department of Ophthalmology, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian, China,*Correspondence: Lijun Zhang
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Singh H, Singh H, Latief U, Tung GK, Shahtaghi NR, Sahajpal NS, Kaur I, Jain SK. Myopia, its prevalence, current therapeutic strategy and recent developments: A Review. Indian J Ophthalmol 2022; 70:2788-2799. [PMID: 35918918 PMCID: PMC9672758 DOI: 10.4103/ijo.ijo_2415_21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Myopia is a widespread and complex refractive error in which a person's ability to see distant objects clearly is impaired. Its prevalence rate is increasing worldwide, and as per WHO, it is projected to increase from 22% in 2000 to 52% by 2050. It is more prevalent in developed, industrial areas and affects individuals of all ages. There are a number of treatments available for the control of myopia, such as glasses, contact lenses, laser surgery, and pharmaceuticals agents. However, these treatments are less beneficial and have significant side effects. A novel molecule, 7-methylxanthine (7-MX), has been found to be a highly beneficial alternate in the treatment of myopia and excessive eye elongation. Many preclinical and clinical studies showed that 7-MX is effective for the treatment of myopia and is presently under phase II of clinical investigation. We have also investigated preclinical toxicity studies such as acute, sub-acute, sub-chronic, and chronic on rats. In these studies, 7-MX was found to be non-toxic as compared to other reported anti-myopic agents. Moreover, as an ideal drug, 7-MX is observed to have no or low toxicity, brain permeability, non-allergic, higher oral administration efficacy, and low treatment costs and thus qualifies for the long-term treatment of myopia. This review article on 7-MX as an alternative to myopia treatment will highlight recent findings from well-designed preclinical and clinical trials and propose a potential future therapy.
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Affiliation(s)
- Harjeet Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India,Department of Pharmacy, Government Polytechnic College, Amritsar, Punjab, India
| | - Harmanpreet Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Uzma Latief
- Center for Basic and Translational Research in Health Science, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Gurleen Kaur Tung
- Center for Basic and Translational Research in Health Science, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Navid Reza Shahtaghi
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | | | - Inderjit Kaur
- Department of Ophthalmology, Baba Farid University of Health Sciences, Faridkot, Punjab, India
| | - Subheet Kumar Jain
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India,Center for Basic and Translational Research in Health Science, Guru Nanak Dev University, Amritsar, Punjab, India,Correspondence to: Prof. Subheet Kumar Jain, Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab - 143 005, India. E-mail:
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Relationships between Sleep Duration, Timing, Consistency, and Chronotype with Myopia among School-Aged Children. J Ophthalmol 2022; 2022:7071801. [PMID: 35903175 PMCID: PMC9325560 DOI: 10.1155/2022/7071801] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 06/22/2022] [Indexed: 11/17/2022] Open
Abstract
Background The role of sleep in childhood myopia has been a research focus; however, the existing evidence is conflicting on sleep duration and timing, and as yet, no studies involve sleep consistency and chronotype. This study is done to make multiple-perspective analyses on the associations between sleep variables and myopia. Methods A population-based cross-sectional study was conducted in Shanghai, China, which included 10,142 school-aged children (7–12 years old, 53.2% boys). The Chinese version of the Children's Sleep Habits Questionnaire (CSHQ) was used to assess sleep variables. Propensity score matching was adopted to balance the difference of covariates between nonmyopic and myopic groups. Logistic regression models were implemented to examine the associations between sleep variables and myopia. Results Sleep duration and timing, mainly during weekdays, were correlated with myopia in a dose-dependent pattern, in which longer sleep duration was associated with decreased risk of myopia (9-10 hours/day: odds ratio (OR) = 0.87; ≥10 hours/day: OR = 0.77; by comparison with <9 hours/day); later bedtime (9 pm to 9:30 pm: OR = 1.46; 9:30 pm to 10 pm: OR = 1.51; 10 pm and after: OR = 2.08; by comparison with before 9 pm) and later wake-up time (7 am and after: OR = 1.36; by comparison with before 6:30 am) increased the risk (all P < 0.05). Moreover, longer weekend catch-up sleep duration and intermediate and evening chronotype were positively correlated with myopia, while social jetlag was associated with a lower odds of myopia. All these findings were also similarly observed in the matching sample. Conclusions Multiple dimensions of sleep were involved in childhood myopia. In addition to sleep duration and timing, sleep consistency and chronotype were also strictly related to myopia. More studies are needed to enrich the current evidence, thus further clarifying the association between sleep and childhood myopia.
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Moreira TDC, Chagas MEV, Pagano CGM, Araújo ALD, Umpierre RN, Oliveira BCD, Guattini VLDO, Katz N, Cabral FC. [TeleOftalmo: strategy to expand the offer of ophthalmologic telediagnostics for primary healthcare in the Southern Brazil]. CAD SAUDE PUBLICA 2022; 38:e00281321. [PMID: 35766633 DOI: 10.1590/0102-311xpt281321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/28/2022] [Indexed: 11/22/2022] Open
Abstract
The use of teleophthalmology may be a viable strategy to track and to diagnose major eye diseases primary health care patients. This study aimed to describe the performance of 30,315 telediagnoses in ophthalmology in primary care patients and the case management of this service. This is a cross-sectional study to evaluate the telediagnosis performed in patients treated at the eight remote points of the TeleOftalmo project from January 2nd, 2018, to December 31st, 2020. The patients' demographic characteristics, the reasons for referral, the diagnoses made according to age group, and the case management of the telediagnosis were evaluated. Most patients were female (66.1%), adults (70.3%), and referred to telediagnosis mainly due to reduced visual acuity (60.5%). Refractive errors were the most prevalent diagnosis in all age groups. Presbyopia was the most prevalent eye disease in adults (65.4%) and older adults (64%), followed by cataracts (41.3%) and suspected glaucoma (10.6%) in older adults. In total, 30,315 patients underwent telediagnosis, 70.5% had their ocular complaints fully resolved, without the need for referral to an in-person ophthalmologist. Telemedicine can be resolutory for the most prevalent eye diseases in the population, increasing the supply of diagnoses, qualifying and assisting in reducing waiting lines for ophthalmologic care.
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Affiliation(s)
| | | | | | - Aline Lutz de Araújo
- Núcleo de Telessaúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil
| | | | | | | | - Natan Katz
- Núcleo de Telessaúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil
| | - Felipe Cezar Cabral
- Núcleo de Telessaúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil
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Fernández Irigaray L, Balsa A, Armesto A, Magnetto I, Szeps A, Iribarren LR, Iribarren R, Grzybowski A. Outdoor exposure in children from Buenos Aires Province, Argentina. ARCHIVOS DE LA SOCIEDAD ESPANOLA DE OFTALMOLOGIA 2022; 97:396-401. [PMID: 35779896 DOI: 10.1016/j.oftale.2021.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 02/09/2021] [Indexed: 06/15/2023]
Abstract
OBJECTIVES To evaluate myopia risk factors, mainly outdoor exposure and reading habits, in a country with low prevalence of myopia (Buenos Aires Province, Argentina). METHODS Consecutive children interviewed in a clinical private practice setting were autorefracted under cycloplegia with cyclopentolate 1%. Their parents consented to fill a questionnaire about schooling, tutorial classes, outdoor exposure, reading habits, and cellphone use, both on weekdays and weekends. The Spanish questionnaire was based on past English questionnaires of myopia clinical trials. The spherical equivalent of the right eye was used for the refractive distribution. The average daily hours spent for each activity were calculated. RESULTS This study involved 115 children aged 10.48 ± 3.65 years (range 5-18 years), with 56.5% being girls. Children had 8 h of schooling per day in 62.6% of cases, and only 14.8 % had tutorial classes after school. There were 38.3% myopes (<-0.50 D), 24.3% hyperopes (>+2.00 D) and the rest were emmetropes. The mean time that these children spent outdoors per day was 3.94 ± 1.45 h (27.60 ± 10.16 h per week). The total mean time spent reading and writing per day was 1.50 ± 0.98 h, and that spent using cellphones and tablets was 2.43 ± 1.66 h. CONCLUSION In an environment with low myopia prevalence, children spend almoast 4 h per day outdoors, much more than the usual recommendation of 2 h a day for myopia prevention.
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Affiliation(s)
| | - A Balsa
- Oftalmólogos Augen, Ciudad de Buenos Aires, Argentina
| | - A Armesto
- Consulta Ocular Iribarren & Asoc., Ciudad de Buenos Aires, Argentina
| | - I Magnetto
- Centro de Visión Dr. Magnetto, Marcos Juárez, Provincia de Córdoba, Argentina
| | - A Szeps
- Departamento de Oftalmología, Prof. Alejandro Posadas, Hospital Nacional, Provincia de Buenos Aires, Argentina
| | - L R Iribarren
- Grupo de Enseñanza Científica, Instituto de Física de Líquidos y Sistemas Biológicos (IFLySIB), CONICET, Buenos Aires, Argentina
| | - R Iribarren
- Consulta Ocular Iribarren & Asoc., Ciudad de Buenos Aires, Argentina.
| | - A Grzybowski
- Departamento de Oftalmología, Universidad de Warmia y Mazury, Olsztyn, Poland; Instituto de Investigación de Oftalmología, Fundación de Desarrollo de Oftalmología, Poznan, Poland
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