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Wang J, Li S, He S, Feng Y, Li P. Regional disparities in the prevalence and correlated factors of myopia in children and adolescents in Gansu, China. Front Med (Lausanne) 2024; 11:1375080. [PMID: 39149607 PMCID: PMC11324564 DOI: 10.3389/fmed.2024.1375080] [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: 01/25/2024] [Accepted: 07/16/2024] [Indexed: 08/17/2024] Open
Abstract
Background Myopia is a significant public health problem across the globe. This study aimed to examine the regional disparity in prevalence and correlated factors of myopia in children and adolescents in two typical regions, Gannan Tibetan Autonomous Prefecture (Gannan Prefecture for short, a Tibetan residential area) and Wuwei City (a Han residential area) in Gansu Province, China, and to provide a reference for the prevention and control of regional myopia. Methods The study was a cross-sectional study of children and adolescents in Gansu Province, China. A total of 6,187 (Wuwei City: 3,266, Gannan Tibetan Autonomous Prefecture: 2,921) students were selected by stratified cluster sampling. Eye examinations and questionnaires were administered to the participants. Myopia is defined as a condition in which the spherical equivalent refractive error of an eye is less than or equal to -0.50 D when ocular accommodation is relaxed. The χ2 test and multivariate logistic regression analysis were used to analyze the correlated factors of myopia. Results The myopia rate of 6,187 students was 71.4%, and students had a higher rate of myopia (77.5%) in Wuwei City compared to Gannan Prefecture (64.6%) (p < 0.001). The results of multivariate analysis in Wuwei City showed that girls (odds ratio (OR) = 1.325), junior students (OR = 2.542), senior students(OR = 4.605), distance between eyes and book less than one foot (OR = 1.291), and parents with myopia (one, OR = 2.437; two, OR = 4.453) had higher risks of myopia (all, p < 0.05). For Gannan Prefecture, girls (OR = 1.477), senior students (OR = 1.537), daily time spent doing homework ≥2 h (OR = 1.420), the distance between eyes and book less than one foot (OR = 1.205), mean time continuous eye use (0.25-<0.5 h, OR = 1.345, 0.5-<1 h, OR = 1.317, ≥1 h, OR = 1.313), average daily sleep duration <8 h (OR = 1.399), and parents with myopia (one, OR = 1.852; two, OR = 2.913) had higher risks of myopia (all, p < 0.05). Conclusion The prevalence of myopia is at a relatively high level in Gansu Province. The prevalence and risk factors for myopia vary by region.
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Affiliation(s)
- Jinyu Wang
- School of Public Health, Lanzhou University, Lanzhou, China
| | - Sheng Li
- Department of Public Health, Lanzhou Second People's Hospital, Lanzhou, China
| | - Shiqi He
- School of Public Health, Lanzhou University, Lanzhou, China
| | - Yali Feng
- School of Public Health, Lanzhou University, Lanzhou, China
| | - Pu Li
- Department of Ophthalmology, Baiyin Second People's Hospital, Baiyin, China
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2
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Stone RA, Tobias JW, Wei W, Carlstedt X, Zhang L, Iuvone PM, Nickla DL. Diurnal gene expression patterns in retina and choroid distinguish myopia progression from myopia onset. PLoS One 2024; 19:e0307091. [PMID: 39028695 PMCID: PMC11259283 DOI: 10.1371/journal.pone.0307091] [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: 04/10/2024] [Accepted: 06/30/2024] [Indexed: 07/21/2024] Open
Abstract
The world-wide prevalence of myopia (nearsightedness) is increasing, but its pathogenesis is incompletely understood. Among many putative mechanisms, laboratory and clinical findings have implicated circadian biology in the etiology of myopia. Consistent with a circadian hypothesis, we recently reported a marked variability in diurnal patterns of gene expression in two crucial tissues controlling post-natal refractive development - the retina and choroid-at the onset of form-deprivation myopia in chick, a widely studied and validated model. To extend these observations, we assayed gene expression by RNA-Seq in retina and choroid during the progression of established unilateral form-deprivation myopia of chick. We assayed gene expression every 4 hours during a single day from myopic and contralateral control eyes. Retinal and choroidal gene expression in myopic vs. control eyes during myopia progression differed strikingly at discrete times during the day. Very few differentially expressed genes occurred at more than one time in either tissue during progressing myopia. Similarly, Gene Set Enrichment Analysis pathways varied markedly by time during the day. Some of the differentially expressed genes in progressing myopia coincided with candidate genes for human myopia, but only partially corresponded with genes previously identified at myopia onset. Considering other laboratory findings and human genetics and epidemiology, these results further link circadian biology to the pathogenesis of myopia; but they also point to important mechanistic differences between the onset of myopia and the progression of established myopia. Future laboratory and clinical investigations should systematically incorporate circadian mechanisms in studying the etiology of myopia and in seeking more effective treatments to normalize eye growth in children.
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Affiliation(s)
- Richard A. Stone
- Department of Ophthalmology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - John W. Tobias
- Penn Genomics and Sequencing Core, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Wenjie Wei
- Department of Ophthalmology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Xia Carlstedt
- Department of Biomedical Sciences and Disease, New England College of Optometry, Boston, Massachusetts, United States of America
| | - Lixin Zhang
- Department of Biomedical Sciences and Disease, New England College of Optometry, Boston, Massachusetts, United States of America
| | - P. Michael Iuvone
- Department of Ophthalmology & Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Debora L. Nickla
- Department of Biomedical Sciences and Disease, New England College of Optometry, Boston, Massachusetts, United States of America
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Zhu G, Tian R, Zhou D, Qin X. Genetic correlation and causal relationship between sleep and myopia: a mendelian randomization study. Front Genet 2024; 15:1378802. [PMID: 39045316 PMCID: PMC11263174 DOI: 10.3389/fgene.2024.1378802] [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: 01/30/2024] [Accepted: 06/11/2024] [Indexed: 07/25/2024] Open
Abstract
Purpose To investigate the genetic correlation and causal links between sleep traits (including sleep duration, chronotype, and insomnia) and myopia. Methods Summary data on three sleep traits (sleep duration, chronotype and insomnia) and myopia from FinnGen (n = 214,211) and UK Biobank (n = 460,536) were analyzed using linkage disequilibrium score regression (LD Score), univariable and multivariable mendelian randomization (MR) experiments and Causal Analysis Using Summary Effect (CAUSE) estimation. Results LD Score regression detected candidate genetic correlation between sleep traits and myopia, such as sleep duration, chronotype (Genetic Correlation Z-score >10.00, h2_observed_p < 0.005, Lambda GC > 1.05, p > 0.05). Univariable MR analyses indicated that increased sleep duration has a promotional effect on the occurrence of myopia (p = 0.046 < 0.05, P_FDR = 0.138 < 0.2, OR = 2.872, 95% CI: 1.018-8.101). However, after accounting for potential confounding factors, multivariable MR and CAUSE analysis did not provide evidence for a causal effect of the three sleep traits on myopia. Conclusion There may be a potential genetic correlation between sleep duration, chronotype and myopia. However, neither of sleep duration, chronotype or insomnia had causal effect on myopia.
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Affiliation(s)
- Guandong Zhu
- Department of Ophthalmology, The Second Hospital of Shandong University, Jinan, China
- Eye Centre of Shandong University, Jinan, China
| | - Ruikang Tian
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, China
- State Key Laboratory of Optometry, Ophthalmology, and Vision Science, Wenzhou, China
| | | | - Xuejiao Qin
- Department of Ophthalmology, The Second Hospital of Shandong University, Jinan, China
- Eye Centre of Shandong University, Jinan, China
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Liu X, Zhao F, Yuan W, Xu J. Causal relationships between height, screen time, physical activity, sleep and myopia: univariable and multivariable Mendelian randomization. Front Public Health 2024; 12:1383449. [PMID: 38966704 PMCID: PMC11222599 DOI: 10.3389/fpubh.2024.1383449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 06/12/2024] [Indexed: 07/06/2024] Open
Abstract
Background This study aims to investigate the independent causal relation between height, screen time, physical activity, sleep and myopia. Methods Instrumental variables (IVs) for exposures and outcome were obtained from the largest publicly available genome-wide association studies (GWAS) databases. First, we performed a bidirectional univariate MR analysis using primarily the inverse variance weighted method (IVW) with height, screen time, physical activity and sleep as the exposure and myopia as the outcome to investigate the causal relationship between exposures and myopia. Sensitivity analysis was used to demonstrate its robustness. Then the multivariable MR (MVMR) and MR-based mediation approach was further used to estimate the mediating effect of potential confounders (education and time outdoors) on causality. Results The results of univariate MR analysis showed that taller height (OR = 1.009, 95% CI = 1.005-1.012, p = 3.71 × 10-7), longer time on computer (OR = 1.048, 95% CI = 1.029-1.047, p = 3.87 × 10-7) and less moderate physical activity (OR = 0.976, 95% CI = 0.96-0.991 p = 2.37 × 10-3) had a total effect on the increased risk of developing myopia. Meanwhile our results did not have sufficient evidence to support the causal relationship between chronotype (p = 0.637), sleep duration (p = 0.952) and myopia. After adjusting for education, only taller height remains an independent risk factor for myopia. After adjusting for education, the causal relationship between height, screen and myopia still had statistical significance. A reverse causal relationship was not found in our study. Most of the sensitivity analyses showed consistent results with those of the IVW method. Conclusion Our MR study revealed that genetically predicted taller height, longer time on computer, less moderate physical activity increased the risk of myopia. After full adjustment for confounders, only height remained independently associated with myopia. As a complement to observational studies, the results of our analysis provide strong evidence for the improvement of myopia risk factors and provide a theoretical basis for future measures to prevent and control myopia in adolescents.
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Affiliation(s)
- Xiaoyu Liu
- The Third People’s Hospital of Dalian, Dalian Municipal Eye Hospital, Dalian Municipal Cancer Hospital, Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, Liaoning, China
| | - Fangkun Zhao
- Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Weichen Yuan
- Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Jun Xu
- The Third People’s Hospital of Dalian, Dalian Municipal Eye Hospital, Dalian Municipal Cancer Hospital, Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, Liaoning, China
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Dong XX, Xie JY, Li DL, Dong Y, Zhang XF, Lanca C, Grzybowski A, Pan CW. Association of sleep traits with myopia in children and adolescents: A meta-analysis and Mendelian randomization study. Prev Med 2024; 180:107893. [PMID: 38342383 DOI: 10.1016/j.ypmed.2024.107893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 01/30/2024] [Accepted: 02/08/2024] [Indexed: 02/13/2024]
Abstract
PURPOSE The association between sleep and myopia in children and adolescents has been reported, yet it remains controversial and inconclusive. This study aimed to investigate the influence of different sleep traits on the risk of myopia using meta-analytical and Mendelian randomization (MR) techniques. METHODS The literature search was performed in August 31, 2023 based on PubMed, Embase, Web of Science, and Cochrane library. The meta-analysis of observational studies reporting the relationship between sleep and myopia was conducted. MR analyses were carried out to assess the causal impact of genetic pre-disposition for sleep traits on myopia. RESULTS The results of the meta-analysis indicated a significant association between the risk of myopia and both short sleep duration [odds ratio (OR) = 1.23, 95% confidence interval (CI) = 1.08-1.42, P = 0.003] and long sleep duration (OR = 0.75, 95% CI = 0.66-0.86, P < 0.001). MR analyses revealed no significant causal associations of genetically determined sleep traits with myopia, including chronotype, sleep duration, short sleep duration and long sleep duration (all P > 0.05). CONCLUSIONS No evidence was found to support a causal relationship between sleep traits and myopia. While sleep may not independently predict the risk of myopia, the potential impact of sleep on the occurrence and development of myopia cannot be disregarded.
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Affiliation(s)
- Xing-Xuan Dong
- School of Public Health, Suzhou Medical College of Soochow University, Suzhou, China
| | - Jia-Yu Xie
- School of Public Health, Suzhou Medical College of Soochow University, Suzhou, China
| | - Dan-Lin Li
- School of Public Health, Suzhou Medical College of Soochow University, Suzhou, China
| | - Yi Dong
- School of Public Health, Suzhou Medical College of Soochow University, Suzhou, China
| | - Xiao-Feng Zhang
- Department of Ophthalmology, Dushu Lake Hospital Affiliated to Soochow University, Suzhou, China
| | - Carla Lanca
- Escola Superior de Tecnologia da Saúde de Lisboa (ESTeSL), Instituto Politécnico de Lisboa, Lisboa, Portugal; Comprehensive Health Research Center (CHRC), Escola Nacional de Saúde Pública, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Andrzej Grzybowski
- Institute for Research in Ophthalmology, Foundation for Ophthalmology Development, Poznan, Poland
| | - Chen-Wei Pan
- School of Public Health, Suzhou Medical College of Soochow University, Suzhou, China.
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Chawla O, Singh A, Kumawat D, Chowdhury N, Kumar B. Systematic Review of Sleep Duration and Development of Myopia. Cureus 2024; 16:e56216. [PMID: 38618360 PMCID: PMC11016326 DOI: 10.7759/cureus.56216] [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] [Accepted: 03/15/2024] [Indexed: 04/16/2024] Open
Abstract
There is a knowledge gap in the relationship between sleep duration and myopia. Since sleep duration is a modifiable risk factor, its association with the development and progression of myopia has implications for public health. This review was conducted in accordance with the 2020 Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The bibliographic databases of PubMed and Scopus were searched for published studies on the association between sleep duration and myopia. These databases were searched in December 2023 with no date or study design limits. The relevant literature was extracted and met the priori determined population (children, adolescents, and adults suffering from myopia with or without corrective glasses), intervention/exposure (sleep), and the outcome (various indicators of sleep especially sleep duration/bedtime/wake time and sleep quality). Data were gathered by gender, age, and refraction technique and standardized to the definition of myopia as refractive error ≥0.50 diopter. The relevant literature was extracted from these electronic databases using the keywords "sleep," "sleep duration," "bedtime," and "myopia." English language articles related to the topic were included. Articles that have discussed the role of risk factors for myopia but did not mention any relation to sleep were excluded. Sixteen studies were included after reviewing the relevant literature, and only six studies have shown a significant relationship between shorter duration of sleep and the development of myopia. This review suggests that apart from other environmental factors, sleep duration may have a role in developing myopia. Thus, increasing awareness about optimum sleep duration has a potential utility to reduce the development and progression of myopia.
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Affiliation(s)
- Omna Chawla
- Department of Physiology, Government Doon Medical College, Dehradun, IND
| | - Anupam Singh
- Department of Ophthalmology, All India Institute of Medical Sciences, Rishikesh, Rishikesh, IND
| | - Devesh Kumawat
- Department of Ophthalmology, All India Institute of Medical Sciences, New Delhi, New Delhi, IND
| | - Nilotpal Chowdhury
- Department of Pathology and Laboratory Medicine, All India Institute of Medical Sciences, Rishikesh, Rishikesh, IND
| | - Barun Kumar
- Department of Cardiology, All India Institute of Medical Sciences, Rishikesh, Rishikesh, IND
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Stone RA, Tobias JW, Wei W, Schug J, Wang X, Zhang L, Iuvone PM, Nickla DL. Diurnal retinal and choroidal gene expression patterns support a role for circadian biology in myopia pathogenesis. Sci Rep 2024; 14:533. [PMID: 38177383 PMCID: PMC10767138 DOI: 10.1038/s41598-023-50684-2] [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: 05/10/2023] [Accepted: 12/22/2023] [Indexed: 01/06/2024] Open
Abstract
The prevalence of myopia (nearsightedness) is increasing to alarming levels, but its etiology remains poorly understood. Because both laboratory and clinical findings suggest an etiologic role for circadian rhythms in myopia development, we assayed gene expression by RNA-Seq in retina and choroid at the onset of unilateral experimental myopia in chick, isolating tissues every 4 h during a single 24-h period from myopic and contralateral control eyes. Occluded versus open eye gene expression differences varied considerably over the 24-h sampling period, with some occurring at multiple times of day but with others showing differences at only a single investigated timepoint. Some of the genes identified in retina or choroid of chick myopia were previously identified as candidate genes for common human myopia. Like differentially expressed genes, pathways identified by Gene Set Enrichment Analysis also varied dramatically by sampling time. Considered with other laboratory data, human genetic and epidemiology data, these findings further implicate circadian events in myopia pathogenesis. The present results emphasize a need to include time of day in mechanistic studies of myopia and to assess circadian biology directly in trying to understand better the origin of myopia and to develop more effective therapies.
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Affiliation(s)
- Richard A Stone
- Department of Ophthalmology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| | - John W Tobias
- Penn Genomics and Sequencing Core, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Wenjie Wei
- Department of Ophthalmology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jonathan Schug
- Penn Genomics and Sequencing Core, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Xia Wang
- Department of Biomedical Sciences and Disease, New England College of Optometry, Boston, MA, USA
| | - Lixin Zhang
- Department of Biomedical Sciences and Disease, New England College of Optometry, Boston, MA, USA
| | - P Michael Iuvone
- Department of Ophthalmology and Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA, USA
| | - Debora L Nickla
- Department of Biomedical Sciences and Disease, New England College of Optometry, Boston, MA, USA
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Wang M, Ji N, Yu SA, Liang LL, Ma JX, Fu AC. Comparison of 0.02% atropine eye drops, peripheral myopia defocus design spectacle lenses, and orthokeratology for myopia control. Clin Exp Optom 2023:1-7. [PMID: 38043135 DOI: 10.1080/08164622.2023.2288180] [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: 11/30/2022] [Accepted: 09/22/2023] [Indexed: 12/05/2023] Open
Abstract
CLINICAL RELEVANCE There are many methods to control the progression of myopia. However, it is currently unknown which method could better control myopia progression: 0.02% atropine eye drops, peripheral myopic defocus design spectacle lenses (PMDSL), or orthokeratology (OK). BACKGROUND To compare the efficacy of 0.02% atropine, PMDSL, and OK to control axial length (AL) elongation in children with myopia. METHODS This study was analysed based on a previous cohort study (0.02% atropine group) and retrospective data (PMDSL and OK group). Overall, 387 children aged 6-14 years with myopia - 1.00D to - 6.00D in the three groups were divided into four subgroups according to age and spherical equivalent refraction (SER). The primary outcome was changed in AL over 1-year. RESULTS The mean axial elongation was 0.30 ± 0.21 mm, 0.23 ± 0.16 mm, and 0.17 ± 0.19 mm in the 0.02% atropine, PMDSL, and OK groups, respectively. Multivariate linear regression analyses showed significant differences in axial elongation among the three groups, especially in children aged 6-10, but not in children aged 10.1-14; the corresponding axial elongation was 0.35 ± 0.21 mm, 0.23 ± 0.17 mm, and 0.21 ± 0.20 mm (P < 0.05 between any two groups, except between PMDSL and OK groups at P > 0.05) and 0.22 ± 0.20 mm, 0.21 ± 0.13 mm, and 0.13 ± 0.18 mm (P < 0.05 between any two groups, except between 0.02% atropine and PMDSL groups at P > 0.05) in children with SER from - 1.00D to - 3.00D and from - 3.01D to - 6.00D, respectively. CONCLUSIONS Within the limits of this study design and using only the current brand of PMDSL, OK appeared to be the best method, followed by PMDSL and then 0.02% atropine, for controlling AL elongation over one year. However, different effects were found in the various age and SER subgroups.
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Affiliation(s)
- Ming Wang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Na Ji
- Department of Optometry, The Affiliated Eye Hospital of Suzhou Vocational Health College, Suzhou, China
| | - Shi-Ao Yu
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ling-Ling Liang
- Department of Ophthalmology, Shi Jiazhuang Aier Eye Hospital, Shi Jiazhuang, China
| | - Jing-Xue Ma
- Department of Ophthalmology, Shi Jiazhuang Aier Eye Hospital, Shi Jiazhuang, China
| | - Ai-Cun Fu
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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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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10
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Zhang D, Sun B, Wu M, Liu H, Zhou L, Guo L. Prevalence and associated factors of myopia among school students in Shenyang, China: a cross-sectional study. Front Public Health 2023; 11:1239158. [PMID: 37711238 PMCID: PMC10499391 DOI: 10.3389/fpubh.2023.1239158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 08/16/2023] [Indexed: 09/16/2023] Open
Abstract
Background In recent years, the prevalence of myopia has increased significantly and caused great concern. Nevertheless, an estimate of myopia in the student population in Shenyang, Liaoning Province, China is still lacking. This study aims to determine the prevalence of myopia among students in Shenyang and investigate the associated factors affecting myopia development. Methods Standard logarithmic visual acuity chart and automatic computerized optometry under non-ciliary muscle paralysis were used to test the students' naked visual acuity of their right and left eyes. The included students were organized to fill in questionnaires on WeChat to collect the factors affecting myopia. Results A total of 34,644 students with a median age of 11.9 years were examined, including 17,563 males and 17,081 females. The overall prevalence of myopia was 60%, with a prevalence of 45% for mild myopia, 13% for moderate myopia, and 1.9% for high myopia. The sex, high educational stage, family history of myopia, doing homework after school or reading and writing for more than 2 h were associated with a higher risk of myopia, while doing eye exercises twice a day or more, going outdoors during recess, reading and writing with eyes more than one foot from books, and sleeping more than 8 h a day were associated factors for preventing myopia. The associated factors influencing myopia vary among different subgroups. Conclusion The prevalence of myopia in Shenyang is at a high level. In addition to sex, high educational stage and genetic factors, environmental factors including length of eye usage, eye exercises, outdoor activities, eye working distance, and sleep duration are associated with myopia prevalence. Therefore, it is recommended that the occurrence and development of myopia can be prevented by controlling the above environmental factors.
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Affiliation(s)
- Dan Zhang
- School of Public Health, Shenyang Medical College, Shenyang, China
- Shenyang Center for Disease Control and Prevention, Shenyang, China
| | - Baijun Sun
- Shenyang Center for Disease Control and Prevention, Shenyang, China
| | - Ming Wu
- Liaoning Center for Disease Control and Prevention, Shenyang, China
| | - Huiying Liu
- School of Public Health, Shenyang Medical College, Shenyang, China
| | - Lin Zhou
- School of Public Health, Shenyang Medical College, Shenyang, China
| | - Lianying Guo
- School of Public Health, Shenyang Medical College, Shenyang, China
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