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Pur DR, Krance SH, Pucchio A, Miranda RN, Felfeli T. Current uses of artificial intelligence in the analysis of biofluid markers involved in corneal and ocular surface diseases: a systematic review. Eye (Lond) 2023; 37:2007-2019. [PMID: 36380089 PMCID: PMC10333344 DOI: 10.1038/s41433-022-02307-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 10/03/2022] [Accepted: 10/31/2022] [Indexed: 11/16/2022] Open
Abstract
Corneal and ocular surface diseases (OSDs) carry significant psychosocial and economic burden worldwide. We set out to review the literature on the application of artificial intelligence (AI) and bioinformatics for analysis of biofluid biomarkers in corneal and OSDs and evaluate their utility in clinical decision making. MEDLINE, EMBASE, Cochrane and Web of Science were systematically queried for articles using AI or bioinformatics methodology in corneal and OSDs and examining biofluids from inception to August 2021. In total, 10,264 articles were screened, and 23 articles consisting of 1058 individuals were included. Using various AI/bioinformatics tools, changes in certain tear film cytokines that are proinflammatory such as increased expression of apolipoprotein, haptoglobin, annexin 1, S100A8, S100A9, Glutathione S-transferase, and decreased expression of supportive tear film components such as lipocalin-1, prolactin inducible protein, lysozyme C, lactotransferrin, cystatin S, and mammaglobin-b, proline rich protein, were found to be correlated with pathogenesis and/or treatment outcomes of dry eye, keratoconus, meibomian gland dysfunction, and Sjögren's. Overall, most AI/bioinformatics tools were used to classify biofluids into diseases subgroups, distinguish between OSD, identify risk factors, or make predictions about treatment response, and/or prognosis. To conclude, AI models such as artificial neural networks, hierarchical clustering, random forest, etc., in conjunction with proteomic or metabolomic profiling using bioinformatics tools such as Gene Ontology or Kyoto Encylopedia of Genes and Genomes pathway analysis, were found to inform biomarker discovery, distinguish between OSDs, help define subgroups with OSDs and make predictions about treatment response in a clinical setting.
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Affiliation(s)
- Daiana Roxana Pur
- Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Saffire H Krance
- Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Aidan Pucchio
- School of Medicine, Queen's University, Kingston, ON, Canada
| | - Rafael N Miranda
- Toronto Health Economics and Technology Assessment Collaborative, Toronto, ON, Canada
- The Institute of Health Policy, Management and Evaluation (IHPME), Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Tina Felfeli
- Toronto Health Economics and Technology Assessment Collaborative, Toronto, ON, Canada.
- The Institute of Health Policy, Management and Evaluation (IHPME), Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.
- Department of Ophthalmology and Visual Sciences, University of Toronto, Toronto, ON, Canada.
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Mamtani NH, Mamtani HG, Chaturvedi SK. Psychiatric aspects of ophthalmic disorders: A narrative review. Indian J Ophthalmol 2023; 71:1810-1815. [PMID: 37203034 PMCID: PMC10391518 DOI: 10.4103/ijo.ijo_2101_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023] Open
Abstract
Ophthalmic disorders have psychiatric aspects associated with them at various levels. Psychological factors have a well-documented role in the causation, aggravation, and maintenance of various ophthalmic conditions, including glaucoma, central serous retinopathy, dry eye disease, and retinitis pigmentosa. Many ophthalmic conditions, including blindness, have psychological manifestations as well, which need to be addressed, in addition to the ophthalmic pathology. There is also significant overlap in the treatment of the two disciplines in many ways. For instance, many ophthalmic drugs have psychiatric side effects. Even ophthalmological surgeries have psychiatric aspects associated with them, which primarily include black patch psychosis and anxiety in the operation theater. This review will be useful for psychiatrists and ophthalmologists, for their clinical practice and research. Future research should focus on this interface to give it its well-deserved attention.
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Affiliation(s)
- Nidhi H Mamtani
- Department of Glaucoma, Vision Research Foundation, Sankara Nethralaya, Chennai, Tamil Nadu, India
| | - Harkishan Gurmukh Mamtani
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Santosh K Chaturvedi
- Department of Psychiatry, Leicestershire Partnership, NHS Trust, Leicester, United Kingdom
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Monfared N, Murphy PJ. Features and influences on the normal tear evaporation rate. Cont Lens Anterior Eye 2023; 46:101809. [PMID: 36621341 DOI: 10.1016/j.clae.2022.101809] [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: 05/13/2022] [Revised: 12/23/2022] [Accepted: 12/28/2022] [Indexed: 01/09/2023]
Abstract
Tear evaporation is a normal physiological phenomenon that has an important role in regulating blink activity and tear production. An altered tear evaporation rate (TER) is a defining characteristic of evaporative dry eye disease (DED), and the measurement of tear evaporation is a useful clinical test for diagnosis. Reported values for a normal TER cover a broad range, which may be due to the influence of ocular, environmental, and systemic factors. For improved disease diagnosis, a fuller understanding of the normal TER range is essential. This paper reports on a literature review of the current knowledge of these normal influences on TER.
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Affiliation(s)
- Naeimeh Monfared
- School of Optometry and Vision Science, University of Waterloo, Waterloo, Canada.
| | - Paul J Murphy
- School of Optometry and Vision Science, University of Waterloo, Waterloo, Canada
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Morthen MK, Magno MS, Utheim TP, Hammond CJ, Vehof J. The work-related burden of dry eye. Ocul Surf 2023; 28:30-36. [PMID: 36690155 DOI: 10.1016/j.jtos.2023.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 01/09/2023] [Accepted: 01/19/2023] [Indexed: 01/22/2023]
Abstract
PURPOSE To investigate the relationship between dry eye disease (DED) and work functioning, unemployment, absenteeism, and worry about job loss. METHODS DED and unemployment, absenteeism, and 'worry about job loss' were assessed in 71,067 subjects (18-65 years, 60% female) from the Dutch population-based Lifelines cohort using the Women's Health study questionnaire and single-item questions, respectively. Work functioning was assessed in 32,475 participants using the Work role functioning questionnaire 2.0. The relationships between DED and work measures were assessed with logistic regression models, corrected for age, sex, BMI, income, educational level, smoking, and 48 comorbidities. RESULTS 8.3% of participants had DED and had more impaired work functioning compared to those without DED (49.2% vs 41.1%, OR 1.21, 95% CI 1.10-1.32, corrected for demographics, smoking and 48 comorbidities). DED carried a similar risk of impaired work functioning as rheumatoid arthritis. For participants with highly symptomatic dry eye impaired work functioning was even higher (59.1%) and similar to that of depression. The impaired work functioning seen with increasing symptoms were greater in undiagnosed subjects versus diagnosed subjects (P = 0.03). After correction for comorbidities, DED remained tied to absenteeism and increased worry about job loss, but not unemployment. CONCLUSION DED was linked to impaired work functioning and absence, but not unemployment. DEDs impact on work functioning is comparable to that of other severe chronic disorders, and undiagnosed subjects may be more affected. This highlights the importance of recognizing DED as a severe disorder and of screening for dry eye in the workplace to aid with diagnosis and treatment.
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Affiliation(s)
- Mathias Kaurstad Morthen
- Department of Ophthalmology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Postbus 30.001, Groningen, the Netherlands; Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
| | - Morten Schjerven Magno
- Department of Ophthalmology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Postbus 30.001, Groningen, the Netherlands; Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway; Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway; Department of Ophthalmology, Sørlandet Hospital Arendal, Arendal, Norway
| | - Tor Paaske Utheim
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway; Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway
| | - Christopher J Hammond
- Department of Twin Research & Genetic Epidemiology, King's College London, St Thomas' Hospital, Lambeth Palace Road, Waterloo, London, SE1 7EH, United Kingdom; Department of Ophthalmology, King's College London, St Thomas' Hospital, Westminster Bridge Road, Waterloo, London, SE1 7EH, London, United Kingdom
| | - Jelle Vehof
- Department of Ophthalmology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Postbus 30.001, Groningen, the Netherlands; Department of Epidemiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Postbus 30.001, Groningen, the Netherlands; Department of Twin Research & Genetic Epidemiology, King's College London, St Thomas' Hospital, Lambeth Palace Road, Waterloo, London, SE1 7EH, United Kingdom; Department of Ophthalmology, Vestfold Hospital Trust, Tønsberg, Norway.
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Shah S, Dutta D, Barua A, Hanneken L, Naroo SA. The effect of non-ablative thermomechanical skin treatment (Tixel®) on dry eye disease: A prospective two centre open-label trial. Cont Lens Anterior Eye 2023; 46:101811. [PMID: 36635105 DOI: 10.1016/j.clae.2022.101811] [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: 03/12/2022] [Revised: 12/16/2022] [Accepted: 12/30/2022] [Indexed: 01/11/2023]
Abstract
PURPOSE To determine the effects of a thermo-mechanical action-based peri-orbital fractional skin treatment (Tixel®) on dry eye disease. METHODS This prospective, controlled, open labelled study was conducted at two study centres: Midland Eye, Solihull, UK, and Vallmedic Vision, Andorra. Participants were screened at the baseline visit (visit-1), received three Tixel® treatments at 2-weeks intervals including further assessment (visits 2, 3 and 4). Participants were followed up for three months post-treatment (visit 5). Vision, intraocular pressure (IOP), dry eye symptomatology were assessed, including the Ocular Surface Disease Index (OSDI) questionnaire, non-invasive tear break-up time (NIBUT) and tear osmolarity as well as detailed ophthalmic assessments. RESULTS Seventy-four participants (41 in Birmingham and 33 in Andorra) with periorbital wrinkles and moderate to severe dry eye disease (DED) were enrolled. The mean age was 59.3 ± 13.3 years and 57 were females. No adverse events, no change in vision (p = 0.310) or IOP (p = 0.419) were observed. Tixel treatment was associated with clinically and statistically significant improvement in the DED symptoms, which was supported by a reduction of 21.40 ± 15.08 (P < 0.001) of the OSDI index. Non-invasive tear break-up time improved by 2.10 ± 0.91 s (p < 0.001) in the Birmingham cohort and 6.60 ± 2.13 s (p < 0.001) in the Andorra cohort. Tear osmolarity reduced from 299.8 ± 13.3 mOsm/L to 298.8 ± 15.6 mOsm/L following the Tixel treatment (p = 0.271). CONCLUSIONS Thermo-mechanical action-based peri-orbital fractional skin treatment Tixel® could be an attractive, safe and effective treatment for DED. This treatment is associated with high clinical and statistically significant improvement in DED signs and symptoms with no adverse events.
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Affiliation(s)
- Sunil Shah
- College of Health and Life Sciences, Aston University, Birmingham, UK; Midland Eye, Solihull, UK
| | - Debarun Dutta
- College of Health and Life Sciences, Aston University, Birmingham, UK
| | | | | | - Shehzad A Naroo
- College of Health and Life Sciences, Aston University, Birmingham, UK.
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Nguyen L, Magno MS, Utheim TP, Hammond CJ, Vehof J. The relationship between sedentary behavior and dry eye disease. Ocul Surf 2023; 28:11-17. [PMID: 36621639 DOI: 10.1016/j.jtos.2023.01.002] [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: 06/08/2022] [Revised: 12/30/2022] [Accepted: 01/04/2023] [Indexed: 01/07/2023]
Abstract
PURPOSE Sedentary behavior (SB) has been linked with low-grade systemic inflammation, which could play a role in the development of dry eye disease (DED). This cross-sectional study aims to investigate the association between SB and DED. METHODS We assessed 48,418 participants from the population-based Lifelines cohort (58% female, 18-96 years). Women's Health Study (WHS)-defined DED was the primary outcome. SB was assessed using the Marshall Sitting Questionnaire. The relationship between DED and SB was analyzed using logistic regressions, corrected for age, sex, BMI, smoking status, demographics, and 48 comorbidities. Any potential modifying effect of physical activity (PA) was also assessed, and the analyses were repeated excluding the most computer-intensive domains, investigating SB independent from screen exposure. RESULTS WHS-defined DED was present in 9.1% of participants. Greater SB was associated with an increased risk of DED (odds ratio (OR) 1.015 per hour/day, 95%CI 1.005-1.024, P = 0.004). The association between SB and DED was only significant for those with less than WHO-recommended PA (OR 1.022, 95%CI 1.002-1.042, P = 0.027), and not in participants meeting WHO's recommendation (OR 1.011, 95%CI 0.999-1.023, P = 0.076). Lastly, when excluding computer-related sitting, the relationship between SB and DED was attenuated, and no longer significant (OR 1.009, 95%CI 0.996-1.023, P = 0.19). CONCLUSIONS Greater sedentary time was tied to an increased risk of DED, especially for those with lower PA levels than WHO recommendations. However, as there was no significant association when computer-intensive sitting time was excluded, screen use could explain the observed relationship and should be noted as a possible key confounder.
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Affiliation(s)
- Long Nguyen
- Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway
| | - Morten Schjerven Magno
- Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway; Department of Ophthalmology, Sørlandet Hospital Arendal, Arendal, Norway; Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway; Department of Ophthalmology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Tor P Utheim
- Department of Ophthalmology, Sørlandet Hospital Arendal, Arendal, Norway; Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway; Department of Ophthalmology, Oslo University Hospital, Oslo, Norway; Department of Ophthalmology, Vestfold Hospital Trust, Tønsberg, Norway
| | - Christopher J Hammond
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway; Department of Twin Research & Genetic Epidemiology, King's College London, St Thomas' Hospital, London, United Kingdom; Department of Ophthalmology, King's College London, St Thomas' Hospital, London, London, United Kingdom
| | - Jelle Vehof
- Dutch Dry Eye Clinic, Velp, the Netherlands; Departments of Ophthalmology and Epidemiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Postbus 30.001, Groningen, the Netherlands; Department of Ophthalmology, Vestfold Hospital Trust, Tønsberg, Norway.
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Accuracy of a New Noninvasive Automatic Ocular Surface Analyzer for the Diagnosis of Dry Eye Disease-Two-Gate Design Using Healthy Controls. Cornea 2023; 42:416-422. [PMID: 35543570 DOI: 10.1097/ico.0000000000003052] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 03/14/2022] [Indexed: 11/26/2022]
Abstract
PURPOSE The purpose of this study was to assess the diagnostic performance of measurements from a new noninvasive, automated ocular surface analyzer (IDRA) in the diagnosis of dry eye disease (DED). METHODS We prospectively identified patients with and without DED using best practice methods. Subsequently, all participants underwent IDRA analysis, consisting of 5 components: noninvasive tear film break-up time, tear meniscus height, lipid layer interferometry, eye blink quality, and infrared meibography. The manufacturer provides cutoff values for a pathologic result for each of these components. Using a stepwise augmentation multivariate logistic regression model, we identified the components with the strongest association for the presence of DED. For the 3 components with the strongest association (interferometry, tear meniscus, and infrared meibography), we calculated the probability of DED. RESULTS We enrolled 40 patients (80 eyes) with DED (mean age 60.5 years; women 78.3%) and 35 healthy subjects (70 eyes, mean age 31.1 years; women 21.7%). The IDRA had an area under the curve of 0.868 (95% confidence interval: 0.809-0.927) to detect DED. A normal (≥80) interferometry combined with a normal (>0.22) tear meniscus and a normal (≤40) infrared meibography was associated with an estimated probability of 18% for the presence of DED, whereas the estimated probability of DED was as high as 96% when all 3 findings were pathologic. CONCLUSIONS The results of IDRA showed a positive concordance with routine clinical diagnostic tests. The new analyzer is an easy-to-access diagnostic tool to rule out the presence of DED in the extramural setting and to guide a timely DED treatment.
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Wolffsohn JS, Lingham G, Downie LE, Huntjens B, Inomata T, Jivraj S, Kobia-Acquah E, Muntz A, Mohamed-Noriega K, Plainis S, Read M, Sayegh RR, Singh S, Utheim TP, Craig JP. TFOS Lifestyle: Impact of the digital environment on the ocular surface. Ocul Surf 2023; 28:213-252. [PMID: 37062428 DOI: 10.1016/j.jtos.2023.04.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 04/06/2023] [Indexed: 04/18/2023]
Abstract
Eye strain when performing tasks reliant on a digital environment can cause discomfort, affecting productivity and quality of life. Digital eye strain (the preferred terminology) was defined as "the development or exacerbation of recurrent ocular symptoms and/or signs related specifically to digital device screen viewing". Digital eye strain prevalence of up to 97% has been reported, due to no previously agreed definition/diagnostic criteria and limitations of current questionnaires which fail to differentiate such symptoms from those arising from non-digital tasks. Objective signs such as blink rate or critical flicker frequency changes are not 'diagnostic' of digital eye strain nor validated as sensitive. The mechanisms attributed to ocular surface disease exacerbation are mainly reduced blink rate and completeness, partial/uncorrected refractive error and/or underlying binocular vision anomalies, together with the cognitive demand of the task and differences in position, size, brightness and glare compared to an equivalent non-digital task. In general, interventions are not well established; patients experiencing digital eye strain should be provided with a full refractive correction for the appropriate working distances. Improving blinking, optimizing the work environment and encouraging regular breaks may help. Based on current, best evidence, blue-light blocking interventions do not appear to be an effective management strategy. More and larger clinical trials are needed to assess artificial tear effectiveness for relieving digital eye strain, particularly comparing different constituents; a systematic review within the report identified use of secretagogues and warm compress/humidity goggles/ambient humidifiers as promising strategies, along with nutritional supplementation (such as omega-3 fatty acid supplementation and berry extracts).
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Affiliation(s)
- James S Wolffsohn
- College of Health & Life Sciences, School of Optometry, Aston University, Birmingham, UK; Department of Ophthalmology, New Zealand National Eye Centre, The University of Auckland, Auckland, New Zealand.
| | - Gareth Lingham
- Centre for Eye Research Ireland, Technological University Dublin, Dublin, Ireland
| | - Laura E Downie
- Department of Optometry and Vision Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Byki Huntjens
- Division of Optometry and Visual Sciences, City, University of London, EC1V 0HB, UK
| | - Takenori Inomata
- Department of Ophthalmology, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo, Japan
| | - Saleel Jivraj
- College of Health & Life Sciences, School of Optometry, Aston University, Birmingham, UK
| | | | - Alex Muntz
- Department of Ophthalmology, New Zealand National Eye Centre, The University of Auckland, Auckland, New Zealand
| | - Karim Mohamed-Noriega
- Department of Ophthalmology, University Hospital and Faculty of Medicine, Autonomous University of Nuevo León (UANL). Monterrey, 64460, Mexico
| | - Sotiris Plainis
- College of Health & Life Sciences, School of Optometry, Aston University, Birmingham, UK; Laboratory of Optics and Vision, School of Medicine, University of Crete, Greece
| | - Michael Read
- Division of Pharmacy and Optometry, The University of Manchester, Manchester, UK
| | - Rony R Sayegh
- Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Sumeer Singh
- Department of Optometry and Vision Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Tor P Utheim
- Department of Ophthalmology, Oslo University Hospital, Oslo, Norway
| | - Jennifer P Craig
- College of Health & Life Sciences, School of Optometry, Aston University, Birmingham, UK; Department of Ophthalmology, New Zealand National Eye Centre, The University of Auckland, Auckland, New Zealand
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Ezinne N, Alemu HW, Cheklie T, Ekemiri K, Mohammed R, James S. High Prevalence of Symptomatic Dry Eye Disease Among University Students During the COVID-19 Pandemic in University of West Indies, Trinidad and Tobago. CLINICAL OPTOMETRY 2023; 15:37-43. [PMID: 36896339 PMCID: PMC9990450 DOI: 10.2147/opto.s396135] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND The Covid-19 pandemic lockdown obligated higher education students to attend online courses, leading to prolonged exposure to digital displays. Excessive time on digital devices could be a risk factor for ocular problems, including symptomatic dry eye. There are limited evidences to show the magnitude of symptomatic dry eye disease and its associated factors during COVID-19 pandemic. This study aimed to fill this gap, among university students in Trinidad and Tobago. METHODS An institutional-based cross-sectional study was conducted among undergraduate students attending the University of West Indies, Saint Augustine Campus from October 2020 to April 2021. The standardized ocular surface disease index questionnaire, descriptive statics and binary logistic regression were used to assess the prevalence and associated factors of dry eye diseases. Variables with a p-value of less than 0.05 were considered to be statistically significant. RESULTS Four hundred (96.3%) participants completed the questionnaire. Among all, 64.8% were female and 50.5% were east Indians. About 48% were using visual display units for average of 10-15 hours/day. The prevalence of symptomatic dry eye disease was 84.3% (95% CI = 80.8-87.5%) with OSDI score ≥13. Lack of education about dry eye 2.69 (95% CI: 1.41-5.13), use of the reading mode of computer 3.92 (95% CI: 1.57-9.80), refractive error 3.20 (95% CI: 1.66-6.20), previous systemic medications 2.80 (95% CI: 1.15-6.81), and average hours of visual display unit use/day (p<0.001) were significantly associated with symptomatic dry eye disease. CONCLUSION Symptomatic dry eye disease was a prominent problem among students at the University of West Indies. Average of >4 hours of visual display unit use/day, refractive error, positive history of systemic medication, lack of education about dry eye, and using computers in reading mode were associated factors.
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Affiliation(s)
- Ngozika Ezinne
- Optometry Unit, Department of Clinical Surgical Sciences, University of the West Indies, Saint Augustine Campus, Trinidad and Tobago, West Indies
| | - Haile W Alemu
- Department of Optometry, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Tarekegn Cheklie
- Department of Optometry, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Kingsley Ekemiri
- Optometry Unit, Department of Clinical Surgical Sciences, University of the West Indies, Saint Augustine Campus, Trinidad and Tobago, West Indies
| | - Ryan Mohammed
- Optometry Unit, Department of Clinical Surgical Sciences, University of the West Indies, Saint Augustine Campus, Trinidad and Tobago, West Indies
| | - Sakeem James
- Optometry Unit, Department of Clinical Surgical Sciences, University of the West Indies, Saint Augustine Campus, Trinidad and Tobago, West Indies
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Fan Z, Du Y, Tang C, Tian R, Lu X, Zheng L, Zhang S, Zhang G. Awareness, Prevalence, and Knowledge of Dry Eye Among Internet Professionals: A Cross-sectional Study in China. Eye Contact Lens 2023; 49:92-97. [PMID: 36719324 DOI: 10.1097/icl.0000000000000968] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2022] [Indexed: 02/01/2023]
Abstract
OBJECTIVES To investigate awareness, prevalence, and knowledge of dry eye among Internet professionals in China. METHODS A cross-sectional study was conducted among 1,265 randomly selected Internet professionals aged ≥18 years. A self-administered questionnaire was used to assess dry eye awareness, dry eye symptoms, and knowledge about dry eye risk factors. Data on demographics and complete medical history were also collected. The primary outcome was the rate of dry eye awareness determined by the answer to the question "Have you seen or heard anything about dry eye recently?" RESULTS Of the 1,265 included individuals aged 20 to 49 years, 519 (41.0%) were women. 54.4% (688 of 1,265) of participants had seen or heard something about dry eye recently and most had obtained information through Internet. 50.8% (643 of 1,265) of participants were identified as subjects with symptoms of dry eye. Dry eye awareness was greater in contact lens wearers (odds ratio [OR], 6.49; 95% confidence interval [CI], 3.70-11.38; P <0.001), those with a refractive surgical history (OR, 5.09; 95% CI, 2.34-11.08; P <0.001), relatives and/or friends of ophthalmologists (OR, 2.76; 95% CI, 1.39-5.49; P =0.004), those with symptoms of dry eye (OR, 1.87; 95% CI, 1.47-2.38; P <0.001) and female subjects (OR, 1.44; 95% CI, 1.13-1.86; P =0.004). Knowledge of nonmodifiable and modifiable risk factors for dry eye was poor in substantial numbers of the participants. CONCLUSIONS The level of dry eye awareness and knowledge of its risk factors is suboptimal in Internet professionals, although the Internet professionals are at high risk of the disease.
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Affiliation(s)
- Zixin Fan
- Department of Science, Bio-manufacturing Engineering Laboratory, Shenzhen Eye Hospital (Z.F., Y.D., C.T., R.T., X.L., L.Z., S.Z., G.Z.), Jinan University, Shenzhen Eye Institute, Shenzhen, Guangdong, China; and Department of Science, Bio-manufacturing Engineering Laboratory, International Graduate School at Shenzhen (Z.F.), Tsinghua University, Shenzhen, Guangdong, China
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Magno MS, Utheim TP, Morthen MK, Snieder H, Jansonius NM, Hammond CJ, Vehof J. The Relationship Between Caffeine Intake and Dry Eye Disease. Cornea 2023; 42:186-193. [PMID: 35081066 PMCID: PMC9797200 DOI: 10.1097/ico.0000000000002979] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/29/2021] [Accepted: 11/29/2021] [Indexed: 01/07/2023]
Abstract
PURPOSE The aim of this study was to determine the association between caffeine intake and dry eye disease (DED) in the large, population-based LifeLines cohort in the Netherlands. METHODS DED was cross-sectionally assessed in 85,302 participants (59% female participants) using the Women's Health Study dry eye questionnaire. Dietary caffeine was calculated from the intake of coffee, tea, cola, and energy drinks. Logistic regression was used to investigate the relationship between DED and caffeine, correcting for demographic variables, smoking status, alcohol intake, and 48 comorbidities of DED. RESULTS The mean (SD; range) age of participants was 50.7 years (12.4; 18-96), and 50,339 (59%) were female. The mean (SD) caffeine intake was 285 (182) mg/d. After correcting for demographics, body mass index, smoking status, and alcohol intake, higher caffeine intake was associated with a decreased risk of Women's Health Study-defined DED [odds ratio (OR) 0.971 per 100 mg/d, 95% CI, 0.956-0.986, P < 0.0005]. When additionally adjusting for medical comorbidities, no significant effect was observed (OR 0.985, 95% CI, 0.969-1.001, P = 0.06). Caffeine's effect on DED was similar in male and female participants and independent of sleep quality and stress at work. Decaffeinated coffee intake was significantly associated with an increased risk of DED, when adjusted for caffeinated coffee, demographics, alcohol intake, smoking status, and comorbidities (OR 1.046 per cup/d, 95% CI, 1.010-1.084, P = 0.01). None of the beverages were significantly associated with the risk of DED, when correcting for intake of the other caffeinated beverages, demographics, smoking status, alcohol intake, and all comorbidities. CONCLUSIONS Dietary caffeine intake does not seem to be a risk factor for DED in the general population.
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Affiliation(s)
- Morten Schjerven Magno
- Departments of Medical Biochemistry; and
- Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway
- Department of Ophthalmology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Tor P. Utheim
- Departments of Medical Biochemistry; and
- Department of Ophthalmology, Oslo University Hospital, Oslo, Norway;
| | - Mathias Kaurstad Morthen
- Departments of Medical Biochemistry; and
- Department of Ophthalmology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Harold Snieder
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands;
| | - Nomdo M. Jansonius
- Department of Ophthalmology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Christopher J. Hammond
- Department of Twin Research & Genetic Epidemiology, King's College London, St Thomas' Hospital, London, United Kingdom;
- Department of Ophthalmology, King's College London, St Thomas' Hospital, London, United Kingdom
| | - Jelle Vehof
- Dutch Dry Eye Clinic, Velp, the Netherlands;
- Department of Ophthalmology, Vestfold Hospital Trust, Tønsberg, Norway; and
- Departments of Ophthalmology and Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.
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Nguyen L, Magno MS, Utheim TP, Jansonius NM, Hammond CJ, Vehof J. The relationship between habitual water intake and dry eye disease. Acta Ophthalmol 2023; 101:65-73. [PMID: 35941821 PMCID: PMC10087849 DOI: 10.1111/aos.15227] [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: 03/29/2022] [Accepted: 07/26/2022] [Indexed: 01/25/2023]
Abstract
PURPOSE The purpose of this study is to test the hypothesis that greater habitual water intake is associated with lower risk of dry eye disease (DED). METHODS We included 51 551 participants from the population-based Lifelines cohort (mean age = 51.2 years) in this cross-sectional association study. DED was assessed using the Women's Health Study (WHS) dry eye questionnaire. Water intake was calculated from food frequency questionnaires. Logistic regressions were used to analyse the relationship between DED and water intake or 24-h urine volume, corrected for age, sex, body mass index, physical activity, smoking status, education, income, 48 comorbidities, and 15 medication groups. The main outcome measure was WHS-defined DED. Highly symptomatic dry eye and clinical diagnosis of DED were secondary outcomes. RESULTS In total, 9.1% of the population had WHS-defined DED. Higher water intake was associated with increased prevalence of WHS-defined DED (OR: 1.011 per 100 ml/day, 95% CI: 1.004-1.017, p = 0.003). After excluding those with a clinical diagnosis, greater water intake was still tied to increased risk of having DED symptoms (OR: 1.010 per 100 ml/day, 95% CI: 1.006-1.015, p < 0.001). Higher 24-h urine volumes were also associated with higher risk of WHS-defined DED (OR: 1.010 per 100 ml/day, 95% CI: 1.005-1.015, p < 0.001). CONCLUSIONS In this large, population-based study, higher water intake was not tied to reduced risk of DED. Rather, it was associated with a modest increased risk of DED. Interventional studies are needed to fully understand the effect of water intake on DED, but this study found no evidence that greater water intake is beneficial for DED.
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Affiliation(s)
- Long Nguyen
- Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway
| | - Morten Schjerven Magno
- Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway.,Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Department of Ophthalmology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Ophthalmology, Sørlandet Hospital Arendal, Arendal, Norway
| | - Tor P Utheim
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Department of Ophthalmology, Sørlandet Hospital Arendal, Arendal, Norway.,Department of Ophthalmology, Oslo University Hospital, Oslo, Norway
| | - Nomdo M Jansonius
- Department of Ophthalmology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Christopher J Hammond
- Department of Ophthalmology, King's College London, St Thomas' Hospital, London, UK.,Department of Twin Research & Genetic Epidemiology, King's College London, St Thomas' Hospital, London, UK
| | - Jelle Vehof
- Department of Ophthalmology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Dutch Dry Eye Clinic, Velp, The Netherlands.,Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Ophthalmology, Vestfold Hospital Trust, Tønsberg, Norway
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Keramatnejad M, DeWolf C. Impact of Pollutant Ozone on the Biophysical Properties of Tear Film Lipid Layer Model Membranes. MEMBRANES 2023; 13:165. [PMID: 36837668 PMCID: PMC9964828 DOI: 10.3390/membranes13020165] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/17/2023] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
Ozone exposure from environmental smog has been implicated as a risk factor for developing dry eye disease (DED). The tear film lipid layer (TFLL), which is the outermost layer of the tear film and responsible for surface tension reduction while blinking, is in direct contact with the environment and serves as the first line of defense against external aggressors such as environmental pollution. The impact of exposure to ozone on the biophysical properties of three TFLL model membranes was investigated. These model membranes include a binary mixture of cholesteryl oleate (CO) and L-α-phosphatidylcholine (egg PC), a ternary mixture of CO, glyceryl trioleate (GT) and PC, as well as a quaternary mixture of CO, GT, a mixture of free fatty acids palmitic acid and stearic acid (FFAs) and PC. Biophysical impacts were evaluated as changes to the surface activity, respreadability, morphology and viscoelastic properties of the films. Expansion to higher molecular areas was observed in all the TFLL model membrane films which is attributable to the accommodation of the cleaved chains in the film. Significant morphological changes were observed, namely fluidization and the disruption of the phase transition behaviour of GT, and multilayer formation of CO. This fluidization reduces the hysteresis loops for the model membranes. On the other hand, the viscoelastic properties of the films exhibited differential impacts from ozone exposure as a function of composition. These findings are correlated to chemical changes to the lipids determined using ESI-MS.
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Huang Q, Zhan M, Hu Z. Auricular Acupressure for Dry Eye Disease: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59010177. [PMID: 36676806 PMCID: PMC9865136 DOI: 10.3390/medicina59010177] [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: 12/02/2022] [Revised: 12/31/2022] [Accepted: 01/03/2023] [Indexed: 01/18/2023]
Abstract
Background and Objectives: The purpose of this systematic review was to summarize the current evidence to examine the safety and effectiveness of auricular acupressure on dry eye diseases. Materials and Methods: Twenty databases were searched from their inception until November 2022. Only randomized controlled trials (RCTs) in which auricular acupressure was used for dry eye diseases were included. The selection process, data extraction and quantitative were conducted according to the guidelines. Results: Seven RCTs met the inclusion criteria. Meta-analysis showed that compared to artificial tears, auricular acupressure had a favorable effect on prolonging tear breakup time (TBUT), improving the Schirmer I test (SIT) score and the score of symptoms (SOS) of patients with dry eye disease (p < 0.05). Furthermore, compared to the artificial tears alone, auricular acupressure plus artificial tears had a significantly greater SIT score (p < 0.001) and response rate (p = 0.006), significantly longer TBUT (p < 0.001), and significantly lower Ocular surface disease index (OSDI) (p = 0.02) and SOS (p = 0.03). However, there was no statistically significant difference between the auricular acupressure plus artificial tears group and the artificial tears group in terms of cornea fluorescein staining (CFS) (p = 0.09). Conclusions: Auricular acupressure, as a sole intervention or in combination with artificial tears, may have a beneficial effect on dry eye disease. However, more high-quality RCTs need to be included in the future to further prove the positive effects of auricular acupressure on patients with dry eye disease.
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Dry Eye Disease: What Is the Role of Vitamin D? Int J Mol Sci 2023; 24:ijms24021458. [PMID: 36674972 PMCID: PMC9860626 DOI: 10.3390/ijms24021458] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/03/2023] [Accepted: 01/03/2023] [Indexed: 01/13/2023] Open
Abstract
Dry eye disease (DED) is a multifactorial condition resulting from reduced tear secretion from the lacrimal glands, increased tear water evaporation or the production of poor-quality tears. Such tear instability can lead to inflammation and damage of the ocular surface, as well as to abnormal nociception. Historically, tear substitutes and corticosteroids have been the bastion of DED therapy, but a substantial number of patients still suffer from residual symptoms even after being treated with traditional treatments. Aiming to find safe and effective alternative therapies, recent efforts have been focused on the role of vitamin D in the cellular physiology of the eye. Possibly because of its positive effect in modulating the immune and inflammatory responses, the systemic supplementation of vitamin D seems, indeed, to be an effective therapeutic strategy, especially, but not only, for patients affected by DED that does not respond to conventional treatments. In this context, this review focuses on the literature reporting on the pathogenesis and treatment of DED, with a special emphasis on the recent investigations reporting on the potential role of the systemic administration of vitamin D as a therapeutic approach in the management of such condition.
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White DE, Hendrix LH, Sun L, Tam I, Macsai M, Gibson AA. Matching-adjusted indirect comparison of phase 3 clinical trial outcomes of OC-01 (varenicline solution) nasal spray and lifitegrast 5% ophthalmic solution for the treatment of dry eye disease. J Manag Care Spec Pharm 2023; 29:69-79. [PMID: 36030415 PMCID: PMC10394217 DOI: 10.18553/jmcp.2022.22208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND: Matching-adjusted indirect comparison (MAIC) is a methodology for cross-study comparisons after adjusting for baseline characteristic imbalances. It is a comparative analytical approach used across therapeutic areas absent head-to-head trial outcomes. OBJECTIVE: To compare the efficacy of OC-01 (varenicline solution) 0.03 mg nasal spray (OC-01 VNS) to lifitegrast 5% ophthalmic solution on tear production and patient-reported eye dryness in patients with dry eye disease (DED) using data from phase 3 clinical trials via MAIC analysis. METHODS: Individual patient data (IPD) from the phase 3 registrational trial of OC-01 VNS and aggregate data from 2 phase 3 trials of lifitegrast in the publicly available XIIDRA New Drug Application were used. Using unanchored MAIC methods, IPD were weighted on clinically relevant baseline variables (age, race, sex, baseline Schirmer's test score [STS], and Eye Dryness Score [EDS]) to produce weighted OC-01 VNS datasets matched to the same lifitegrast datasets' variables. Least-squares (LS) mean change from baseline (CFB) in STS for OC-01 VNS was calculated using the identical analysis of covariance model and covariates used to calculate the same values for lifitegrast in the XIIDRA New Drug Application and was then compared. LS mean EDS (based on a 100- point Visual Analogue Scale) was compared via analysis of covariance in the weighted OC-01 VNS and lifitegrast datasets. OC-01 VNS at 2 and 4 weeks compared to lifitegrast data at 2 and 6 weeks. RESULTS: Data from 511 subjects (n = 260 treated; 251 vehicle control [VC]) in the OC-01 VNS phase 3 trial, 588 (n = 293 treated, 295 VC) in the lifitegrast phase 3 OPUS-1 trial, and 718 (n = 358 treated, 360 VC) in the lifitegrast phase 3 OPUS-2 trial were analyzed. The LS mean STS CFB for OC-01 VNS at 2 and 4 weeks was significantly greater than that for lifitegrast at 2 and 6 weeks in OPUS-1 and OPUS-2 (P < 0.0001 for all comparisons). The LS mean EDS CFB for OC-01 VNS at 2 and 4 weeks was significantly greater than that for lifitegrast at 2 and 6 weeks in OPUS-1 (P < 0.0001 for both comparisons) and at 4 weeks vs lifitegrast at 6 weeks in OPUS-2 (P < 0.0001). CONCLUSIONS: This MAIC analysis demonstrates OC-01 VNS produced significantly greater improvement in mean STS and comparable or greater improvement in EDS compared with lifitegrast in phase 3 trials. These findings suggest a potentially greater magnitude of improvement achieved with OC-01 VNS compared with lifitegrast for the treatment of DED within the conditions of the analysis methodology. DISCLOSURES D White is a consultant for Oyster Point Pharma, Inc. L Hendrix, M Macsai, and A Gibson are employees and shareholders for Oyster Point Pharma, Inc. L Sun was an employee of COEUS, Clinical Research at the time of study conduct and received funding from Oyster Point Pharma, Inc. I Tam is an employee of COEUS, Clinical Research and received funding from Oyster Point Pharma, Inc. Oyster Point Pharma, Inc was involved in the study design, data collection, data analysis, and preparation of the manuscript and is the manufacturer/licensee of OC-01 (varenicline solution) nasal spray. Oyster Point Pharma, Inc., sponsored the phase 3 OC-01 (varenicline solution) clinical study from which analysis data were obtained.
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Affiliation(s)
| | | | | | - Iris Tam
- COEUS Consulting Group, Philadelphia, PA
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Liu C, Zhou Q, Gao ZQ. Efficacy of intense pulsed light and meibomian gland expression treatments in meibomian gland dysfunction: A meta-analysis of randomized controlled trials. Medicine (Baltimore) 2022; 101:e32292. [PMID: 36595759 PMCID: PMC9794218 DOI: 10.1097/md.0000000000032292] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
PURPOSE This review aimed to evaluate the efficacy and safety of intense pulsed light treatment combined with meibomian gland expression treatments in meibomian gland dysfunction. METHODS We conducted a meta-analysis of randomized controlled trials that compared the efficacy of intense pulsed light treatment and meibomian gland expression treatments in the treatment of dry eye disease. The meibomian gland yielding secretion score was the primary outcome, whereas the secondary outcomes included the Meiboscore, tear breakup time in seconds, standard patient evaluation for eye dryness and corneal fluorescein staining. RESULTS This study consisted of 6 trials with 326 patients. Significantly greater improvement was observed in meibomian gland yielding secretion score at 1 month [mean difference (MD): 13.69 (95% CI, 11.98, 15.40)] and at 3 months [MD: 11.03 (95% confidence interval (CI), 10.27, 11.80)], low meibomian gland yielding secretion score at 1 month [MD: 6.92 (95% CI, 5.49, 8.34)] and at 3 months [MD: 6.80 (95% CI, 5.01, 8.59)], up meibomian gland yielding secretion score at 1 month [MD: 6.41 (95% CI, 4.12, 8.70)] and at 3 months [MD: 8.06 (95% CI, 5.70, 10.42)] and tear breakup time at 1 month [MD: 2.38 (95% CI, 1.83, 2.92)] and at 3 months [MD: 1.82 (95% CI, 1.48, 2.19)] in the IPL-MGX group than in the MGX group. CONCLUSIONS IPL-MGX is safer and more efficacious as compared to the MGX alone in the treatment of patients with meibomian gland dysfunction-related dry eye. We recommend discussing the decision with the ophthalmologist for an appropriate choice.
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Affiliation(s)
- Chao Liu
- Department of Ophthalmology, the First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui Province, China
- * Correspondence: Chao Liu, Department of Ophthalmology, the First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, Anhui Province, China (e-mail: )
| | - Qi Zhou
- Department of Ophthalmology, the First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui Province, China
| | - Zi-Qing Gao
- Department of Ophthalmology, the First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui Province, China
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McCann P, Abraham AG, Mukhopadhyay A, Panagiotopoulou K, Chen H, Rittiphairoj T, Gregory DG, Hauswirth SG, Ifantides C, Qureshi R, Liu SH, Saldanha IJ, Li T. Prevalence and Incidence of Dry Eye and Meibomian Gland Dysfunction in the United States: A Systematic Review and Meta-analysis. JAMA Ophthalmol 2022; 140:1181-1192. [PMID: 36301551 PMCID: PMC9614673 DOI: 10.1001/jamaophthalmol.2022.4394] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 09/01/2022] [Indexed: 01/12/2023]
Abstract
Importance Dry eye is a common clinical manifestation, a leading cause of eye clinic visits, and a significant societal and personal economic burden in the United States. Meibomian gland dysfunction (MGD) is a major cause of evaporative dry eye. Objective To conduct a systematic review and meta-analysis to obtain updated estimates of the prevalence and incidence of dry eye and MGD in the United States. Data Sources Ovid MEDLINE and Embase. Study Selection A search conducted on August 16, 2021, identified studies published between January 1, 2010, and August 16, 2021, with no restrictions regarding participant age or language of publication. Case reports, case series, case-control studies, and interventional studies were excluded. Data Extraction and Synthesis The conduct of review followed a protocol registered on PROSPERO (CRD42021256934). PRISMA guidelines were followed for reporting. Joanna Briggs Institute and Newcastle Ottawa Scale tools were used to assess risk of bias. Data extraction was conducted by 1 reviewer and verified by another for accuracy. Prevalence of dry eye and MGD were combined in separate meta-analyses using random-effects models. Main Outcomes and Measures Prevalence and incidence of dry eye and MGD in the United States. Summary estimates from meta-analysis of dry eye and MGD prevalence with 95% CI and 95% prediction intervals (95% PI). Results Thirteen studies were included in the systematic review. Dry eye prevalence was reported by 10 studies, dry eye incidence by 2 studies, and MGD prevalence by 3 studies. Meta-analysis estimated a dry eye prevalence of 8.1% (95% CI, 4.9%-13.1%; 95% PI, 0%-98.9%; 3 studies; 9 808 758 participants) and MGD prevalence of 21.2% (95% CI, 7.2%-48.3%; 95% PI, 0%-100%; 3 studies; 19 648 participants). Dry eye incidence was 3.5% in a population 18 years and older and 7.8% in a population aged 68 years and older. No studies reported MGD incidence. Conclusions and Relevance This systematic review and meta-analysis demonstrated uncertainty about the prevalence and incidence of dry eye and MGD in the United States. Population-based epidemiological studies that use consistent and validated definitions of dry eye and MGD are needed for higher-certainty estimates of dry eye and MGD prevalence and incidence in the United States.
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Affiliation(s)
- Paul McCann
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, Aurora
| | - Alison G. Abraham
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, Aurora
- Department of Epidemiology, Colorado School of Public Health, Aurora
| | | | - Kanella Panagiotopoulou
- Université Paris Cité, Research Center of Epidemiology and Statistics (CRESS-U1153), Inserm, Paris, France
| | - Hongan Chen
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, Aurora
| | | | - Darren G. Gregory
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, Aurora
| | - Scott G. Hauswirth
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, Aurora
| | - Cristos Ifantides
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, Aurora
| | - Riaz Qureshi
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, Aurora
- Department of Epidemiology, Colorado School of Public Health, Aurora
| | - Su-Hsun Liu
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, Aurora
- Department of Epidemiology, Colorado School of Public Health, Aurora
| | - Ian J. Saldanha
- Center for Evidence Synthesis in Health, Department of Health Services, Policy, and Practice, Brown University School of Public Health, Providence, Rhode Island
- Department of Epidemiology, Brown University School of Public Health, Providence, Rhode Island
| | - Tianjing Li
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, Aurora
- Department of Epidemiology, Colorado School of Public Health, Aurora
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Hynnekleiv L, Magno M, Vernhardsdottir RR, Moschowits E, Tønseth KA, Dartt DA, Vehof J, Utheim TP. Hyaluronic acid in the treatment of dry eye disease. Acta Ophthalmol 2022; 100:844-860. [PMID: 35514082 PMCID: PMC9790727 DOI: 10.1111/aos.15159] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/05/2022] [Accepted: 04/18/2022] [Indexed: 12/31/2022]
Abstract
Dry eye disease (DED) is a highly prevalent and debilitating condition affecting several hundred million people worldwide. Hyaluronic acid (HA) is a naturally occurring glycosaminoglycan commonly used in the treatment of DED. This review aims to critically evaluate the literature on the safety and efficacy of artificial tears containing HA used in DED treatment. Literature searches were conducted in PubMed, including MEDLINE, and in Embase via Ovid with the search term: "(hyaluronic acid OR hyaluronan OR hyaluronate) AND (dry eye OR sicca)". A total of 53 clinical trials are included in this review, including eight placebo-controlled trials. Hyaluronic acid concentrations ranged from 0.1% to 0.4%. Studies lasted up to 3 months. A broad spectrum of DED types and severities was represented in the reviewed literature. No major complications or adverse events were reported. Artificial tears containing 0.1% to 0.4% HA were effective at improving both signs and symptoms of DED. Two major gaps in the literature have been identified: 1. no study investigated the ideal drop frequency for HA-containing eyedrops, and 2. insufficient evidence was presented to recommend any specific HA formulation over another. Future investigations assessing the optimal drop frequency for different concentrations and molecular weights of HA, different drop formulations, including tonicity, and accounting for DED severity and aetiology are essential for an evidence-based, individualized approach to DED treatment.
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Affiliation(s)
- Leif Hynnekleiv
- Department of Plastic and Reconstructive SurgeryOslo University HospitalOsloNorway,Department of OphthalmologyHaukeland University HospitalBergenNorway,Department of Twin Research & Genetic EpidemiologyKing's College LondonSt Thomas' HospitalLondonUK
| | - Morten Magno
- Department of Plastic and Reconstructive SurgeryOslo University HospitalOsloNorway,Department of Medical BiochemistryOslo University HospitalOsloNorway,Department of Ophthalmology and EpidemiologyUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands,Faculty of MedicineInstitute of Clinical MedicineUniversity of OsloOsloNorway
| | | | - Emily Moschowits
- Department of Medical BiochemistryOslo University HospitalOsloNorway
| | - Kim Alexander Tønseth
- Department of Plastic and Reconstructive SurgeryOslo University HospitalOsloNorway,Faculty of MedicineInstitute of Clinical MedicineUniversity of OsloOsloNorway
| | - Darlene A. Dartt
- Schepens Eye Research Institute/Massachusetts Eye and EarDepartment of OphthalmologyHarvard Medical SchoolBostonMassachusettsUSA
| | - Jelle Vehof
- Department of Twin Research & Genetic EpidemiologyKing's College LondonSt Thomas' HospitalLondonUK,Department of Ophthalmology and EpidemiologyUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands,Department of OphthalmologyVestfold Hospital TrustTønsbergNorway
| | - Tor P. Utheim
- Department of Plastic and Reconstructive SurgeryOslo University HospitalOsloNorway,Department of Medical BiochemistryOslo University HospitalOsloNorway,Department of OphthalmologySørlandet Hospital ArendalArendalNorway,Department of OphthalmologyStavanger University HospitalOsloNorway,Department of OphthalmologyVestre Viken HospitalDrammenNorway
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Fjærvoll K, Fjærvoll H, Magno M, Nøland ST, Dartt DA, Vehof J, Utheim TP. Review on the possible pathophysiological mechanisms underlying visual display terminal-associated dry eye disease. Acta Ophthalmol 2022; 100:861-877. [PMID: 35441459 PMCID: PMC9790214 DOI: 10.1111/aos.15150] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 03/13/2022] [Accepted: 03/23/2022] [Indexed: 01/09/2023]
Abstract
BACKGROUND Visual display terminal (VDT) use is a key risk factor for dry eye disease (DED). Visual display terminal (VDT) use reduces the blink rate and increases the number of incomplete blinks. However, the exact mechanisms causing DED development from VDT use have yet to be clearly described. PURPOSE The purpose of the study was to conduct a review on pathophysiological mechanisms promoting VDT-associated DED. METHODS A PubMed search of the literature investigating the relationship between dry eye and VDT was performed, and relevance to pathophysiology of DED was evaluated. FINDINGS Fifty-five articles met the inclusion criteria. Several pathophysiological mechanisms were examined, and multiple hypotheses were extracted from the articles. Visual display terminal (VDT) use causes DED mainly through impaired blinking patterns. Changes in parasympathetic signalling and increased exposure to blue light, which could disrupt ocular homeostasis, were proposed in some studies but lack sufficient scientific support. Together, these changes may lead to a reduced function of the tear film, lacrimal gland, goblet cells and meibomian glands, all contributing to DED development. CONCLUSION Visual display terminal (VDT) use appears to induce DED through both direct and indirect routes. Decreased blink rates and increased incomplete blinks increase the exposed ocular evaporative area and inhibit lipid distribution from meibomian glands. Although not adequately investigated, changes in parasympathetic signalling may impair lacrimal gland and goblet cell function, promoting tear film instability. More studies are needed to better target and improve the treatment and prevention of VDT-associated DED.
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Affiliation(s)
- Ketil Fjærvoll
- Institute of Clinical Medicine, Faculty of MedicineUniversity of OsloOsloNorway,Department of Medical BiochemistryOslo University HospitalOsloNorway,Department of Plastic and Reconstructive SurgeryOslo University HospitalOsloNorway
| | - Haakon Fjærvoll
- Institute of Clinical Medicine, Faculty of MedicineUniversity of OsloOsloNorway,Department of Medical BiochemistryOslo University HospitalOsloNorway,Department of Plastic and Reconstructive SurgeryOslo University HospitalOsloNorway
| | - Morten Magno
- Institute of Clinical Medicine, Faculty of MedicineUniversity of OsloOsloNorway,Department of Medical BiochemistryOslo University HospitalOsloNorway,Department of Plastic and Reconstructive SurgeryOslo University HospitalOsloNorway,Department of Ophthalmology, University of GroningenUniversity Medical Center GroningenGroningenThe Netherlands
| | | | - Darlene A. Dartt
- Schepens Eye Research Institute of Massachusetts Eye and EarHarvard Medical SchoolBostonMassachusettsUSA
| | - Jelle Vehof
- Department of Ophthalmology, University of GroningenUniversity Medical Center GroningenGroningenThe Netherlands,Department of Twin Research & Genetic EpidemiologyKing's College LondonSt Thomas' HospitalLondonUK,Department of Epidemiology, University of GroningenUniversity Medical Center GroningenGroningenThe Netherlands
| | - Tor P. Utheim
- Department of Medical BiochemistryOslo University HospitalOsloNorway,Department of Plastic and Reconstructive SurgeryOslo University HospitalOsloNorway,Department of OphthalmologyOslo University HospitalOsloNorway,Department of OphthalmologySørlandet Hospital ArendalArendalNorway,Department of Quality and Health Technology, The Faculty of Health SciencesUniversity of StavangerStavangerNorway,Department of OphthalmologyStavanger University HospitalStavangerNorway,Department of Computer ScienceOslo Metropolitan UniversityOsloNorway,Department of Clinical Medicine, Faculty of MedicineUniversity of BergenBergenNorway
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71
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Sex Steroid Hormone Analysis in Human Tear Fluid Using a Liquid Chromatography-Mass Spectrometry Method. Int J Mol Sci 2022; 23:ijms232314864. [PMID: 36499192 PMCID: PMC9735929 DOI: 10.3390/ijms232314864] [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: 10/26/2022] [Revised: 11/17/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022] Open
Abstract
The marked sexual dimorphism prevalent in inflammatory/autoimmune diseases is mostly due to sex hormone actions. One common eye disease that disproportionately affects women is dry eye. Thus, our aim was to optimise our highly sensitive liquid chromatography-tandem mass spectrometry method for steroid hormone quantification in tear fluid (TF). We used tears and matched serum samples from 10 heathy individuals. Estrone, estradiol testosterone, progesterone, androstenedione, and dehydroepiandrosterone, were quantified with an HPLC coupled with a Triple Quad 5500 MS. Estrone was measured in 80% of female and 20% of male TF samples (mean ± SD, 68.9 ± 62.2 pmol/L), whereas estradiol was undetectable in tears. Progesterone was identified in half of the female tear samples (2.91 ± 3.47 nmol/L) but in none of the male samples, whereas testosterone was quantifiable only in male tears (0.24 ± 0.1 nmol/L). TF hormone levels were, on average, from 1.4% to 55% of systemic values. Estrone, progesterone, and testosterone levels in tears correlated with the matching serum samples (r = 0.82, 0.79, and 0.85, respectively), but androstenedione and dehydroepiandrosterone showed no correlations. Our LC-MS/MS method could detect five out of the six steroid hormones studied in individual human TF samples and could therefore be used to analyse the role of sex steroids in eye diseases.
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Beyond QALYs and DALYs: factoring in the well-being effects of dietary supplementation with omega-3 fatty acids in dry eye syndrome. INTERNATIONAL JOURNAL OF PHARMACEUTICAL AND HEALTHCARE MARKETING 2022. [DOI: 10.1108/ijphm-11-2020-0102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Purpose
This study aims to explore the use and relevance of WALYs (well-being-adjusted life years) in light of the utilitarian premises of neoclassical economics that continue to dominate health outcomes evaluation. QALYs (quality-adjusted life years) and DALYs (disability-adjusted life years) measure longevity and quality of life in terms of purely health-related aspects and outcomes of medical interventions. However, evaluative questions of subjective well-being may be equally important in comparing outcomes and cost-effectiveness of these interventions.
Design/methodology/approach
A two-phase online search strategy for refereed research on dry eye treatment with omega-3 fatty acids (omega-3s) was adopted. Phase I aimed to identify and contrast clinical parameters of efficacy in omega-3 dietary supplementation. Phase II aimed to find a preference-based, multi-attribute utility instrument specific and sensitive enough to dry eye and its consequences on patients’ subjective well-being. We then illustrate how WALYs can be conceptualized and calculated based on the search results.
Findings
Empiric therapies like omega-3s can be assessed in terms of reducing or relieving symptomatic discomfort and pain, and enabling the patient to enjoy life and derive satisfaction from daily activities. We find in VisQoL (Vision and Quality of Life Index) a viable alternative to conventional multi-attribute utility instruments, including those typically used in QALY and DALY calculations. Clinical efficacy indices of dry eye can be linked to VisQoL’s quality of life dimensions. Differently weighted outcomes can be aggregated. And WALYs per patient per year can be computed by scaling aggregated outcomes to match the WALY rating scale. The implications of subjective well-being for both patient and society can thus be approached from a broader and richer perspective.
Originality/value
To the best of our knowledge, this is the first study of its kind in pharmaceutical outcomes valuation and marketing. It offers a framework for analyzing life satisfaction and well-being among dry eye patients under treatment. It is also the first to use and adapt a multi-attribute utility measure to treatment outcomes of omega-3s in ocular diseases, from which this study suggests WALYs may be computed. However, it does not suggest that WALYs should supplant QALYs and DALYs in evaluating health outcomes. Medical economics is enriched if alternative methods of outcomes evaluations can help fill in the gaps in existing paradigms and do so by accounting for other effects of condition-specific interventions. Costs and benefits of interventions to the individual and society can then be valued not just more effectively, but also more equitably.
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73
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Jiang Y, Lin S, Gao Y. Mesenchymal Stromal Cell-Based Therapy for Dry Eye: Current Status and Future Perspectives. Cell Transplant 2022; 31:9636897221133818. [PMID: 36398793 PMCID: PMC9679336 DOI: 10.1177/09636897221133818] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Dry eye is one of the most common chronic diseases in ophthalmology. It affects quality of life and has become a public health problem that cannot be ignored. The current treatment methods mainly include artificial tear replacement therapy, anti-inflammatory therapy, and local immunosuppressive therapy. These treatments are mainly limited to improvement of ocular surface discomfort and other symptoms. In recent years, regenerative medicine has developed rapidly, and ophthalmologists are working on new methods to treat dry eye. Mesenchymal stromal cells (MSCs) have anti-inflammatory, tissue repair, and immune regulatory effects, and have become a promising tool for the treatment of dry eye. These effects can also be produced by MSC-derived exosomes (MSC-Exos). As a cell-free therapy, MSC-Exos are hypoimmunogenic, serve more stable entities, and compared with MSCs, reduce the safety risks associated with the injection of live cells. This article reviews current knowledge about MSCs and MSC-Exos, and highlights the latest progress and future prospects of MSC-based therapy in dry eye treatment.
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Affiliation(s)
- Yuting Jiang
- Department of Ophthalmology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Shu Lin
- Diabetes and Metabolism Division, Garvan Institute of Medical Research, Darlinghurst, NSW, Australia
| | - Yingying Gao
- Department of Ophthalmology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China,Yingying Gao, The Second Affiliated Hospital of Fujian Medical University, No. 34 North Zhongshan Road, Quanzhou 362000, Fujian, China.
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74
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Ozdemir S, Yeo SWJ, Lee JJ, Bhaskar A, Finkelstein E, Tong L. Patient Medication Preferences for Managing Dry Eye Disease: The Importance of Medication Side Effects. THE PATIENT 2022; 15:679-690. [PMID: 35697974 PMCID: PMC9192251 DOI: 10.1007/s40271-022-00586-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 05/08/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The side effects of dry eye medications can lead to medication non-adherence and, eventually, to poor outcomes. This study aimed to quantify to what extent the side effects of dry eye disease (DED) medications (burning/stinging sensation and blurring) are important to patients compared to medication benefits or costs. METHODS Patients diagnosed with DED were recruited at a referral eye center in Singapore (n = 139). This study utilized a Discrete Choice Experiment where patients were presented with 10 choice tasks where they were asked to choose between their current medication (or no medication), and two hypothetical medications that varied based on five attributes: duration of burning/stinging, duration of blurring, time to medication effectiveness, medication frequency, and out-of-pocket cost. The main outcomes were relative attribute importance and predicted uptake. RESULTS Latent class logistic regressions found two groups with distinct preferences. For both classes, duration of burning/stinging (Class 1 = 23%, Class 2 = 29%) and cost (Class 1 = 24%, Class 2 = 27%) were the most important attributes while duration of blurring (Class 1 = 15%, Class 2 = 9%) was the least important. The predicted uptake of a medication increased 18 percentage-points when burning/stinging duration decreased from 2 h to a few minutes. The predicted uptake for new medications was lowest for those on medication with well-controlled symptoms and highest for those who were not on medication and could not control their symptoms effectively. CONCLUSION This study showed that duration of burning/stinging was an important factor when choosing medications. Incorporating patient preferences in medication decisions can potentially improve patient acceptance of a treatment regimen.
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Affiliation(s)
- Semra Ozdemir
- Signature Programme in Health Services and Systems Research, Duke-NUS Medical School, 8 College Road, Singapore, 169857, Singapore.
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore.
| | - Sharon Wan Jie Yeo
- Ocular Surface Research Group, Singapore Eye Research Institute, Singapore, Singapore
| | - Jia Jia Lee
- Signature Programme in Health Services and Systems Research, Duke-NUS Medical School, 8 College Road, Singapore, 169857, Singapore
| | - Adithya Bhaskar
- Signature Programme in Health Services and Systems Research, Duke-NUS Medical School, 8 College Road, Singapore, 169857, Singapore
| | - Eric Finkelstein
- Signature Programme in Health Services and Systems Research, Duke-NUS Medical School, 8 College Road, Singapore, 169857, Singapore
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
- Duke Global Health Institute, Duke University, Durham, NC, USA
| | - Louis Tong
- Ocular Surface Research Group, Singapore Eye Research Institute, Singapore, Singapore
- Cornea and External Eye Disease Service, Singapore National Eye Centre, Singapore, Singapore
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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75
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Nagaarudkumaran N, Mirzapour P, McCanna D, Ngo W. Temporal Change in Pro-Inflammatory Cytokine Expression from Immortalized Human Corneal Epithelial Cells Exposed to Hyperosmotic Stress. Curr Eye Res 2022; 47:1488-1495. [PMID: 36107828 DOI: 10.1080/02713683.2022.2125531] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
PURPOSE To determine the metabolic activity, and cytokine expression over time from immortalized human corneal epithelial cells (HCECs) exposed to hyperosmotic stress. METHODS HCECs were cultured and expanded in DMEM/F-12 with 10% FBS. The cells were exposed to either normal media (295 mmol/kg) or hyperosmolar media (500 mmol/kg) for 0.25, 3, 6, and 12 hours. After each exposure duration, metabolic activity was quantified using alamarBlue, and a panel of pro-inflammatory cytokines (IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12p70, IL-13, TNF-α, IFN-γ, and IL-17A) was quantified using multiplexed electrochemiluminescence (Meso Scale Diagnostics, Rockville, MD). RESULTS Metabolic activity of the HCEC exposed to hyperosmolar conditions was significantly reduced at the 3-, 6-, and 12-hour mark compared to the control (all p < 0.01). There was no significant difference in cytokine expression between the hyperosmolar media and control at the 0.25- and 3-hour mark for all cytokines (all p ≥ 0.28). The difference in cytokine expression between the hyperosmolar media and the control was significant for IL-1β, IL-4, IL-6, IL-8, IL-12p70, IL-13, and TNF-α at the 6-hour mark (all p ≤ 0.02). No significant change in cytokine expression between the hyperosmolar media and control was noted for IL-2, IL-10, IL-17A, and IFN-γ (all p ≥ 0.74) at the 6-hour mark. CONCLUSION Hyperosmolar stress reduced cell metabolic activity and increased expression of IL-1β, IL-4, IL6, IL8, IL-12p70, IL-13, and TNF-α over a 6-hour period in an immortalized HCEC line.
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Affiliation(s)
- Nijani Nagaarudkumaran
- Centre for Ocular Research & Education, School of Optometry & Vision Science, University of Waterloo, Waterloo, Canada
| | - Parisa Mirzapour
- Centre for Ocular Research & Education, School of Optometry & Vision Science, University of Waterloo, Waterloo, Canada
| | - David McCanna
- Centre for Ocular Research & Education, School of Optometry & Vision Science, University of Waterloo, Waterloo, Canada
| | - William Ngo
- Centre for Ocular Research & Education, School of Optometry & Vision Science, University of Waterloo, Waterloo, Canada.,Centre for Eye and Vision Research (CEVR), Hong Kong SAR, China
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76
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Paik B, Tong L. Topical Omega-3 Fatty Acids Eyedrops in the Treatment of Dry Eye and Ocular Surface Disease: A Systematic Review. Int J Mol Sci 2022; 23:13156. [PMID: 36361942 PMCID: PMC9654205 DOI: 10.3390/ijms232113156] [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: 09/17/2022] [Revised: 10/16/2022] [Accepted: 10/26/2022] [Indexed: 11/20/2023] Open
Abstract
Dry eye is a common inflammatory condition of the ocular surface. While oral omega-3 supplementation for its treatment has been extensively studied, recent large-scale studies have cast doubt on their efficacy. However, efficacy of topical omega-3 has yet to be reviewed. We performed a systematic search of PubMed, Embase, and Cochrane databases for all studies evaluating topical omega-3 in dry eye. Five human and five animal studies were included. Of the five human studies, two were on dry eye disease (DED), one was on contact lens discomfort, and two were on patients undergoing corneal collagen crosslinking. In humans, there is promising evidence for improved ocular surface staining and tear break-up time compared to controls, equivocal evidence for improvements to ocular surface symptoms and meibomian gland dysfunction, and no effect on increasing tear production. Data from animal models largely agree with these findings, and further reveal decreased inflammatory cytokines and monocyte infiltration. Our review suggests that topical omega-3 is a promising treatment for dry eye, but also points to the paucity of evidence in this field. Further trials in humans are required to characterize effects of topical omega-3 and optimize its dosage.
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Affiliation(s)
- Benjamin Paik
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Louis Tong
- Department of Cornea and External Eye Disease, Singapore National Eye Center, Singapore 168751, Singapore
- Ocular Surface Research Group, Singapore Eye Research Institute, Singapore 169856, Singapore
- Ophthalmlogy and Visual Sciences Academic Clinical Programme, Duke-NUS Medical School, Singapore 169857, Singapore
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77
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Liu SH, Saldanha IJ, Abraham AG, Rittiphairoj T, Hauswirth S, Gregory D, Ifantides C, Li T. Topical corticosteroids for dry eye. Cochrane Database Syst Rev 2022; 10:CD015070. [PMID: 36269562 PMCID: PMC9586197 DOI: 10.1002/14651858.cd015070.pub2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Dry eye disease (DED), arising from various etiologic factors, leads to tear film instability, ocular surface damage, and neurosensory changes. DED causes symptoms such as ocular dryness, burning, itching, pain, and visual impairment. Given their well-established anti-inflammatory effects, topical steroid preparations have been widely used as a short-term treatment option for DED. Because of potential risks of ocular hypertension, cataracts, and infections associated with the long-term use of topical steroids, published trials comparing the efficacy and safety of topical steroids (versus placebo) have mostly been of short duration (three to eight weeks). OBJECTIVES To evaluate the effectiveness and safety of topical corticosteroids compared with no treatment, placebo, other steroidal or non-steroidal therapies, or a combination of therapies for DED. SEARCH METHODS We searched the Cochrane Central Register of Controlled Trials (CENTRAL, which contains the Cochrane Eyes and Vision Trials Register; 2021, Issue 8); Ovid MEDLINE; Ovid Embase; Latin American and Caribbean Health Sciences database (LILACS); ClinicalTrials.gov; and the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP), without restriction on language or year of publication. The date of the last search was 20 August 2021. SELECTION CRITERIA We included randomized controlled trials (RCTs) in which topical corticosteroids, alone or in combination with tobramycin, were compared with no treatment, artificial tears (AT), vehicles, AT plus tobramycin, or cyclosporine A (CsA). DATA COLLECTION AND ANALYSIS We applied standard Cochrane methodology. MAIN RESULTS We identified 22 RCTs conducted in the USA, Italy, Spain, China, South Korea, and India. These RCTs reported outcome data from a total of 4169 participants with DED. Study characteristics and risk of bias All trials recruited adults aged 18 years or older, except one trial that enrolled children and adolescents aged between 3 and 14 years. Half of these trials involved predominantly female participants (median 79%, interquartile range [IQR] 76% to 80%). On average, each trial enrolled 86 participants (IQR 40 to 158). The treatment duration of topical steroids ranged between one week and three months; trial duration lasted between one week and six months. Eight trials were sponsored exclusively by industry, and four trials were co-sponsored by industry and institutional or governmental funds. We assessed the risk of bias of both subjective and objective outcomes using RoB 2, finding nearly half of the trials to be at high risk of bias associated with selective outcome reporting. Findings Of the 22 trials, 16 evaluated effects of topical steroids, alone or in combination with tobramycin, as compared with lubricants (AT, vehicle), AT plus tobramycin, or no treatment. Corticosteroids probably have a small to moderate effect on improving patient-reported symptoms by 0.29 standardized mean difference (SMD) (95% confidence interval [CI] 0.16 to 0.42) as compared with lubricants (moderate certainty evidence). Topical steroids also likely have a small to moderate effect on lowering corneal staining scores by 0.4 SMDs (95% CI 0.18 to 0.62) (moderate certainty evidence). However, steroids may increase tear film break-up time (TBUT) slightly (mean difference [MD] 0.70 s, 95% CI 0.06 to 1.34; low certainty evidence) but not tear osmolarity (MD 1.60 mOsm/kg, 95% CI -10.47 to 13.67; very low certainty evidence). Six trials examined topical steroids, either alone or in combination with CsA, against CsA alone. Low certainty evidence indicates that steroid-based interventions may have a small to moderate effect on improving participants' symptoms (SMD -0.33, 95% CI -0.51 to -0.15), but little to no effect on corneal staining scores (SMD 0.05, 95% CI -0.25 to 0.35) as compared with CsA. The effect of topical steroids compared to CsA alone on TBUT (MD 0.37 s, 95% CI -0.13 to 0.87) or tear osmolarity (MD 5.80 mOsm/kg, 95% CI -0.94 to 12.54; loteprednol etabonate alone) is uncertain because the certainty of the evidence is low or very low. None of the included trials reported on quality of life scores. Adverse effects The evidence for adverse ocular effects of topical corticosteroids is very uncertain. Topical corticosteroids may increase participants' risk of intraocular pressure (IOP) elevation (risk ratio [RR] 5.96, 95% CI 1.30 to 27.38) as compared with lubricants. However, when compared with CsA, steroids alone or combined with CsA may decrease or increase IOP elevation (RR 1.45, 95% CI 0.25 to 8.33). It is also uncertain whether topical steroids may increase risk of cataract formation when compared with lubricants (RR 0.34, 95% CI 0.01 to 8.22), given the short-term use and study duration (four weeks or less) to observe longer-term adverse effects. AUTHORS' CONCLUSIONS: Overall, the evidence for the specified review outcomes was of moderate to very low certainty, mostly due to high risk of bias associated with selective results reporting. For dry eye patients whose symptoms require anti-inflammatory control, topical corticosteroids probably provide small to moderate degrees of symptom relief beyond lubricants, and may provide small to moderate degrees of symptom relief beyond CsA. However, the current evidence is less certain about the effects of steroids on improved tear film quality or quantity. The available evidence is also very uncertain regarding the adverse effects of topical corticosteroids on IOP elevation or cataract formation or progression. Future trials should generate high certainty evidence to inform physicians and patients of the optimal treatment strategies with topical corticosteroids in terms of regimen (types, formulations, dosages), duration, and its time-dependent adverse profile.
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Affiliation(s)
- Su-Hsun Liu
- Department of Ophthalmology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - Ian J Saldanha
- Center for Evidence Synthesis in Health, Department of Health Services, Policy, and Practice, Brown University School of Public Health, Providence, Rhode Island, USA
| | - Alison G Abraham
- Department of Epidemiology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - Thanitsara Rittiphairoj
- Department of Ophthalmology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - Scott Hauswirth
- Department of Ophthalmology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - Darren Gregory
- Department of Ophthalmology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - Cristos Ifantides
- Department of Ophthalmology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - Tianjing Li
- Department of Ophthalmology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
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Cyclosporine (0.05%) Combined with Diclofenac Sodium Eye Drops for the Treatment of Dry Eye Disease. J Ophthalmol 2022; 2022:2334077. [PMID: 36284825 PMCID: PMC9588351 DOI: 10.1155/2022/2334077] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/23/2022] [Accepted: 10/10/2022] [Indexed: 11/30/2022] Open
Abstract
Objective To assess the clinical efficacy of cyclosporine (0.05%) combined with diclofenac sodium eye drops (0.1%) in the treatment of dry eye disease. Methods A prospective analysis was performed on clinical information of 128 patients diagnosed with dry eye at the ophthalmic clinic of the General Hospital of Xinjiang Military Command of the Chinese People's Liberation Army from August 2020 to August 2021. Specifically, patients were randomly divided into a control group and a study group. In addition to conventional treatment, patients in the control group were treated with cyclosporine (0.05%) eye drops; while in the study group, patients received cyclosporine (0.05%) combined with diclofenac sodium eye drops (0.1%). Subsequently, comparisons and analysis were performed before and after treatment between the two groups in the clinical symptom questionnaire score of dry eye disease, the corneal fluorescein staining (CFS) score, determination of tear film break-up time (BUT), Schirmer I test (SIT) score, and curative effect. Results After treatment, the clinical symptom scores and CFS scores were decreased while the BUT and SIT scores were increased in both groups; besides, compared with the control group, the clinical symptom scores and CFS scores were much lower while the BUT and SIT scores were higher in the study group. Moreover, the overall response rate in the study group (96.9%) was much better than that in the control group (79.7%); and the differences between the two groups were statistically significant (p < 0.05). Conclusion The combination of cyclosporine (0.05%) and diclofenac sodium eye drops (0.1%) based on conventional treatment can be applied to the clinical treatment of dry eye disease due to its good clinical effects on relieving dry eye symptoms.
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Chen Y, Wu Y, Gao M, Gao R, Zhang K. Differential response to topical lubrication in patient with dry eye disease, based on age. BMC Ophthalmol 2022; 22:396. [PMID: 36199043 PMCID: PMC9532823 DOI: 10.1186/s12886-022-02609-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 09/09/2022] [Accepted: 09/20/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To compare the Ocular surface disease index (OSDI) score, Schirmer I test (SIT), fluorescein break up time (FBUT) and fluorescence staining (FLCS) score of dry eye patients at different ages. METHODS 90 eyes of 90 patients with mild to moderate dry eye from September 2020 to September 2021 were retrospectively included and were divided into young group (20-39 years, n = 29), middle-age group (40-59 years, n = 30), and elder group (> 60 years, n = 31). Patients were given a 28-day topical lubricating ocular surface and repair-promoting drugs combined with local physical therapy. Patients were followed up at 7, 14 and 28 days. The OSDI score, SIT, FBUT and FLCS score were examined. RESULTS There were differences between the OSDI score in three groups at each time point (all P < 0.001). SIT were different among the three groups (F = 350.61, P < 0.001), and a time effect was found (F = 80.87, P < 0.001). SIT at 14 and 28 days after treatment in middle-age and elder groups were lower than young group (all P < 0.001). SIT at 7, 14 and 28 days in elder group were lower than middle-age group (all P < 0.001). FLCS score was lower at 28 days than other time points (all P < 0.001). CONCLUSION Dry eye patients are given a 28-day topical lubricating ocular surface and repair-promoting drugs combined with local physical therapy, which can promote tear secretion, film stability, and the recovery of corneal integrity. Age affects the treatment effect of mild to moderate dry eye, among which tear secretion is the most significant.
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Affiliation(s)
- Yingxin Chen
- Department of ophthalmology, the General Hospital of Northern Theater Command, No.83, Wenhua Road, Shenhe District, 110840, Shenyang, China
| | - Yajun Wu
- Department of ophthalmology, the General Hospital of Northern Theater Command, No.83, Wenhua Road, Shenhe District, 110840, Shenyang, China
| | - Minghong Gao
- Department of ophthalmology, the General Hospital of Northern Theater Command, No.83, Wenhua Road, Shenhe District, 110840, Shenyang, China.
| | - Ruiyao Gao
- Department of ophthalmology, the General Hospital of Northern Theater Command, No.83, Wenhua Road, Shenhe District, 110840, Shenyang, China
| | - Kai Zhang
- Department of ophthalmology, the General Hospital of Northern Theater Command, No.83, Wenhua Road, Shenhe District, 110840, Shenyang, China
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Antibiotic treatment for dry eye disease related to meibomian gland dysfunction and blepharitis – A review. Ocul Surf 2022; 26:211-221. [DOI: 10.1016/j.jtos.2022.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 08/18/2022] [Accepted: 08/30/2022] [Indexed: 11/19/2022]
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81
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Dai M, Xu K, Xiao D, Zheng Y, Zheng Q, Shen J, Qian Y, Chen W. In Situ Forming Hydrogel as a Tracer and Degradable Lacrimal Plug for Dry Eye Treatment. Adv Healthc Mater 2022; 11:e2200678. [PMID: 35841368 DOI: 10.1002/adhm.202200678] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 06/10/2022] [Indexed: 01/27/2023]
Abstract
Lacrimal plug is an effective and widely therapeutic strategy to treat dry eye. However, almost all commercialized plugs are fixed in a certain design and associated with many complications, such as spontaneous plug extrusion, epiphora, and granuloma and cannot be traced in the long-term. Herein, a simple in situ forming hydrogel is developed as a tracer and degradable lacrimal plug to achieve the best match with the irregular lacrimal passages. In this strategy, methacrylate-modified silk fibroin (SFMA) is served as a network, and a self-assembled indocyanine green fluorescence tracer nanoparticle (FTN) is embedded as an indicator to develop the hydrogel plug using visible photo-crosslinking. This SFMA/FTN hydrogel plug has excellent biocompatibility and biodegradability, which can be noninvasively monitored by near-infrared light. In vivo tests based on dry eye rabbits show that the SFMA/FTN hydrogel plug can completely block the lacrimal passages and greatly improve the various clinical indicators of dry eye. These results demonstrate that the SFMA/FTN hydrogel is suitable as an injectable and degradable lacrimal plug with a long-term tracking function. The work offers a new approach to the development of absorbable plugs for the treatment of dry eye.
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Affiliation(s)
- Mali Dai
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China
| | - Kejia Xu
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China
| | - Decheng Xiao
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China
| | - Yujing Zheng
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China
| | - Qinxiang Zheng
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China
| | - Jianliang Shen
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China.,Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, China
| | - Yuna Qian
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, China
| | - Wei Chen
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China
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Mallis P, Michalopoulos E, Sarri EF, Papadopoulou E, Theodoropoulou V, Katsimpoulas M, Stavropoulos-Giokas C. Evaluation of the Regenerative Potential of Platelet-Lysate and Platelet-Poor Plasma Derived from the Cord Blood Units in Corneal Wound Healing Applications: An In Vitro Comparative Study on Corneal Epithelial Cells. Curr Issues Mol Biol 2022; 44:4415-4438. [PMID: 36286018 PMCID: PMC9600746 DOI: 10.3390/cimb44100303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/14/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Cord blood platelet lysate (CB-PL) and cord blood platelet poor plasma (CB-PPP) have been applied with success in wound healing applications. Pathologies such as Sjogrens’s Syndrome (SS) and chronic graft versus host disease (cGVHD) can lead to severe ophthalmology issues. The application of CB-PL and CB-PPP may be strongly considered for damaged cornea healing. This study aimed to the evaluation of the beneficial properties of CB-PL and CB-PPP in corneal wound healing applications. Methods: Initially, the CB-PL and CB-PPP were produced from donated cord blood units (CBUs), followed by biochemical analysis. Corneal epithelial cells (CECs) were isolated from wistar rats and then cultured with medium containing 20% v/v either of CB-PL or CB-PPP. To define the impact of CB-PL and CB-PPP, biochemical, morphological analysis, scratch-wound assays, and immunoassays in CECs were performed. Results: CB-PL and CB-PPP were characterized by good biochemical parameters, regarding their quality characteristics and biomolecule content. CECs’ morphological features did not change after their cultivation with CB-PL or CB-PPP. A scratch wound assay and molecular analysis of CECs expanded with CB-PL indicated higher migratory capacity compared to those cultured with CB-PPP. Conclusion: CB-PL and CB-PPP exhibited good properties with respect to cell migration and proliferation, and could be considered an alternative source for eye drop production, to possibly be used in cornea wound healing applications.
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Affiliation(s)
- Panagiotis Mallis
- Hellenic Cord Blood Bank (HCBB), Biomedical Research Foundation Academy of Athens, 4 Soranou Ephessiou, 115 27 Athens, Greece
- Correspondence: ; Tel.: +30-21-065-9734 or +30-697-161-6467; Fax: +30-210-659-7345
| | - Efstathios Michalopoulos
- Hellenic Cord Blood Bank (HCBB), Biomedical Research Foundation Academy of Athens, 4 Soranou Ephessiou, 115 27 Athens, Greece
| | - Eirini Faidra Sarri
- Hellenic Cord Blood Bank (HCBB), Biomedical Research Foundation Academy of Athens, 4 Soranou Ephessiou, 115 27 Athens, Greece
| | - Elena Papadopoulou
- Hellenic Cord Blood Bank (HCBB), Biomedical Research Foundation Academy of Athens, 4 Soranou Ephessiou, 115 27 Athens, Greece
| | - Vasiliki Theodoropoulou
- Hellenic Cord Blood Bank (HCBB), Biomedical Research Foundation Academy of Athens, 4 Soranou Ephessiou, 115 27 Athens, Greece
| | - Michalis Katsimpoulas
- Experimental Surgery Unit, Center of Clinical, Experimental Surgery and Translational Research, Βιοmedical Research Foundation of the Academy of Athens, 4 Soranou Ephessiou, 115 27 Athens, Greece
| | - Catherine Stavropoulos-Giokas
- Hellenic Cord Blood Bank (HCBB), Biomedical Research Foundation Academy of Athens, 4 Soranou Ephessiou, 115 27 Athens, Greece
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O’Dell L, Dierker DS, Devries DK, Garlich J, Whitley WO, Holdbrook M, Baba SN, Yeu E. Psychosocial Impact of Demodex Blepharitis. Clin Ophthalmol 2022; 16:2979-2987. [PMID: 36081601 PMCID: PMC9447456 DOI: 10.2147/opth.s374530] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/23/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose To evaluate the impact of Demodex blepharitis on patients’ daily activities and quality of life. Patients and Methods In this multicenter, observational, prospective, IRB-approved study, 311 Demodex blepharitis patients aged ≥18 years were included. Demodex blepharitis was diagnosed based on the presence of ≥1.0 mite per lash (upper and lower eyelids combined), >10 collarettes on the upper lashes, and at least mild lid margin erythema of the upper eyelid in at least one eye. All patients were asked to complete a questionnaire about their symptoms, daily activities, quality of life, and management approaches, and descriptive statistics were used to analyze the responses. Results More than half the patients had been experiencing symptoms of blepharitis for ≥4 years. The three most frequent and bothersome symptoms experienced by patients were dry eyes, itchiness, and irritation. Nearly half the patients (47%) responded that they were conscious of their eyes all day, and 23% said that they were constantly worrying about their eyes. Other activities that were negatively affected included difficulty driving at night (47%), additional time needed for daily hygiene routine (30%), and difficulty in wearing eye make-up (in 34% of females). While all subjects had objective signs of Demodex blepharitis confirmed by an eye care provider, 58% said they had never previously been diagnosed with blepharitis. The most commonly used management approaches for Demodex blepharitis were artificial tears (47%), warm compresses (32%), and lid wipes (14%). Conclusion Demodex blepharitis has a significant negative impact on daily activities and the mental and physical well-being of afflicted patients.
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Affiliation(s)
| | | | | | | | | | | | | | - Elizabeth Yeu
- Virginia Eye Consultants, Norfolk, VA, USA
- Correspondence: Elizabeth Yeu, Virginia Eye Consultants, 241 Corporate Boulevard, Suite 210, Norfolk, VA, 23502, USA, Tel +1 757 793 4942, Fax +1 757 319 2493, Email
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Jongkhajornpong P, Anothaisintawee T, Lekhanont K, Numthavaj P, McKay G, Attia J, Thakkinstian A. Short-term Efficacy and Safety of Biological Tear Substitutes and Topical Secretagogues for Dry Eye Disease: A Systematic Review and Network Meta-analysis. Cornea 2022; 41:1137-1149. [PMID: 34924549 PMCID: PMC9365259 DOI: 10.1097/ico.0000000000002943] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE The purpose of this study was to assess short-term efficacy and safety of tear promotion eye drops (biological tear substitutes and topical secretagogues) for treating dry eye disease. METHODS Randomized controlled trials comparing short-term effects of biological tear substitutes or topical secretagogues versus placebo or other topical dry eye treatments in adults with dry eye disease were identified from the MEDLINE, Embase, Scopus, ClinicalTrials.gov , and World Health Organization International Clinical Trials Registry Platform databases. Pairwise meta-analysis and network meta-analysis were performed. Outcomes were ocular symptoms, ocular surface staining, tear break-up time, Schirmer test, and adverse events. The certainty of evidence was evaluated using the Grading of Recommendations, Assessment, Development, and Evaluations approach. RESULTS Thirty-nine randomized controlled trials (3693 patients) were eligible. Using artificial tears as a reference, autologous platelet lysate was the most effective treatment for lowering ocular surface disease index (unstandardized mean difference [USMD] -31.85; 95% confidence interval [CI]: -43.19 to -20.51) and platelet rich plasma showed the most reduction in corneal fluorescein staining scores (standardized mean difference -2.52; 95% CI: -3.23 to -1.82). Cord blood serum was the most effective treatment for increasing tear break-up time (USMD 2.67; 95% CI: 0.53-4.82), and eledoisin was superior to others in improving Schirmer scores (USMD 2.28; 95% CI: 0.14-4.42). Most interventions did not significantly increase ocular adverse events compared with artificial tears. CONCLUSIONS Biological tear substitutes, including autologous serum, autologous platelet lysate, platelet rich plasma, and cord blood serum, might be the most effective treatment among tear promotion eye drops in relieving dry eye symptoms without increasing adverse events. However, there remains uncertainty around these findings because of low/very low certainty of evidence.
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Affiliation(s)
- Passara Jongkhajornpong
- Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
- Department of Ophthalmology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Thunyarat Anothaisintawee
- Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
- Department of Family Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Kaevalin Lekhanont
- Department of Ophthalmology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Pawin Numthavaj
- Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Gareth McKay
- Centre for Public Health, School of Medicine, Dentistry, and Biomedical Sciences, Queen's University Belfast, Northern Ireland; and
| | - John Attia
- School of Medicine and Public Health, University of Newcastle, Callaghan, New South Wales, Australia
| | - Ammarin Thakkinstian
- Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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Forristal MT, Stephenson KAJ. Differentiating primary dry eye disease from ocular neuropathic pain: implications for symptom management. Clin Exp Optom 2022:1-7. [PMID: 36004515 DOI: 10.1080/08164622.2022.2111199] [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: 10/15/2022] Open
Abstract
CLINICAL RELEVANCE Eyecare practitioners' management of ocular surface disease is essential in managing increasing dry eye disease (DED) presentations including ocular neuropathic pain (ONP). Topical Proxymetacaine offers a simple, readily available and practical method of detecting ONP in practice and can be used to differentiate ONP from DED by eyecare practitioners, when accompanied with an anterior segment examination. BACKGROUND Differentiating DED from ONP presents a significant opportunity to eyecare providers, allowing appropriate treatment choices for more adequate symptom control, greater patient satisfaction, and reduced emergent re-presentations. This study aims to differentiate patients presenting with DED symptoms into DED or ONP using a simple diagnostic tool, which can be used in practice to allocate appropriate treatment options for the patient's respective condition. A comparison of the prevalence of presentations of ONP presenting with DED symptoms in hospital ophthalmology settings and in optometric primary care settings will also be made. METHODS Patients with symptoms of DED were opportunistically recruited as they presented to ophthalmology outpatient clinics and primary care optometric services. Patients were then categorised as DED, ONP, or mixed DED/ONP based on their subjective response 30 seconds post-Proxymetacaine Hydrochloride 2% instillation. RESULTS Twenty-one patients were recruited, including 12 patients from ophthalmologic outpatient clinics and nine patients from primary care optometric services. Twelve patients were identified to have primary DED, while nine patients were identified to have ONP. 43% of patients presenting with DED symptoms had features of neuropathic pain in ophthalmologic outpatient presentations compared to 44% of patients in primary care optometric services. CONCLUSION Categorising DED and ONP patients by their response to Proxymetacaine can be used as a simple diagnostic tool in guiding future patient management and can be indicative of their potential response to topical therapies. The use of topical Proxymetacaine and the resultant change in ocular pain score can facilitate selection of patients who may benefit from centrally acting neuropathic pain agents over topical ocular therapy.
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Affiliation(s)
- Mark T Forristal
- Department of Ophthalmology, Royal Victoria Eye and Ear Hospital, Dublin, Ireland
| | - Kirk A J Stephenson
- Department of Ophthalmology, Royal Victoria Eye and Ear Hospital, Dublin, Ireland
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Zeleke TC, Adimassu NF, Alemayehu AM, Dawud TW, Mersha GA. Symptomatic dry eye disease and associated factors among postgraduate students in Ethiopia. PLoS One 2022; 17:e0272808. [PMID: 35994456 PMCID: PMC9394807 DOI: 10.1371/journal.pone.0272808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 07/26/2022] [Indexed: 11/25/2022] Open
Abstract
Background Symptomatic dry eye disease is a growing public health challenge especially among those who are visual display unit (VDU) users and other long-time near activity workers. Globally, computer user adults experience a surge in the prevalence of dry eye. Data is insufficient on the prevalence of dry eye disease among postgraduate students in Ethiopia. Therefore, the present was aimed to assess the prevalence of dry eye and its associated factors among postgraduate students at the University of Gondar, Northwest Ethiopia. Methods A cross-sectional study was conducted on a total of 423 postgraduate students who were selected based on a simple random sampling technique. Data was collected through online symptom-based ocular surface disease index questionnaire. Binary logistic regression was used to test the association and p-value of <0.05 was considered to determine the significance of the association. Results From the total postgraduate students, 404 completed the study with a response rate of 95.5%. The prevalence of symptomatic dry eye disease was 50.5% (95% CI, 45.1%-54.9%). Average continuous visual display unit use for 2-4hours per day[AOR = 2.57 (95% CI, 1.27–5.21)] and for> 4hours per day[AOR = 3.77 (95% CI 1.87–7.59)], duration of visual display unit use for 3–5 years [AOR = 2.24 (95% CI, 1.17–4.31)], 6–8 years [AOR = 2.46 (95% CI,1.31–4.62)] and > 8 years [AOR = 3.25 (95% CI, 1.63–6.48)], average sleeping hour < 7 hours/day within last week [AOR = 2.17 (95% CI, 1.35–3.49)] and current known allergic conjunctivitis [AOR = 5.42 (95% CI, 2.43–12.10)] were significantly associated with symptomatic dry eye disease. Conclusion and recommendation In this study, about half of postgraduate students faced symptomatic dry eye disease. Significant association was observed between symptomatic dry eye disease and average continuous hours of visual display unit use, duration of visual display unit use in years, shortage of sleep and current known allergic conjunctivitis. It is advisable for postgraduate students to limit screen exposure hour and establish regular breaking time along their exposure. It is also advisable to have optimum sleep as possible. It is also important to explore dry eye disease on a large sample incorporating clinical tests.
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Affiliation(s)
- Tarekegn Cheklie Zeleke
- Department of Optometry, University of Gondar, School of Medicine, Tertiary Eye Care and Training Center, Gondar, Ethiopia
- * E-mail:
| | - Nebiyat Feleke Adimassu
- Department of Optometry, University of Gondar, School of Medicine, Tertiary Eye Care and Training Center, Gondar, Ethiopia
| | - Abiy Maru Alemayehu
- Department of Optometry, University of Gondar, School of Medicine, Tertiary Eye Care and Training Center, Gondar, Ethiopia
| | - Teshager Wondale Dawud
- Department of Ophthalmology, University of Gondar, School of Medicine, Tertiary eye Care and Training Center, Gondar, Ethiopia
| | - Getasew Alemu Mersha
- Department of Optometry, University of Gondar, School of Medicine, Tertiary Eye Care and Training Center, Gondar, Ethiopia
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Oydanich M, Kuklinski E, Asbell PA. Assessing the Quality, Reliability, and Readability of Online Information on Dry Eye Disease. Cornea 2022; 41:1023-1028. [PMID: 35344972 PMCID: PMC9273298 DOI: 10.1097/ico.0000000000003034] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 01/05/2022] [Accepted: 02/16/2022] [Indexed: 12/24/2022]
Abstract
PURPOSE The purpose of this study was to assess the quality, reliability, readability, and technical quality of web sites relating to dry eye disease. METHODS A cross-sectional study was conducted that evaluated the first 75 web sites on a Google Search by using the keyword "dry eyes." Each web site was evaluated by 2 independent reviewers using the DISCERN, HONcode, and JAMA criteria to assess quality and reliability. Interrater reliability was also analyzed. Readability was assessed using the Flesch-Kincaid readability tests and the Gunning fog, Simple Measure of Gobbledygook, Coleman-Liau, and automated readability indices. Technical quality was determined by the presence of 10 specific features. Web sites were further categorized into institutional (academic centers, medical associations, and government institutions) and private (private practices) categories. RESULTS There was no significant difference in scoring observed between the 2 reviewers. The overall mean DISCERN score ± standard error (SE) was 3.2 ± 0.1, the mean HONcode score (±SE) was 9.3 ± 0.3, and the mean JAMA score (±SE) was 1.9 ± 0.1. Institutional web sites had a higher DISCERN score (3.4 ± 0.1 vs. 3.1 ± 0.1; P < 0.05) and HONcode score (10.3 ± 0.5 vs. 8.8 ± 0.4; P < 0.05) than private sites. Technical quality was higher in institutional web sites compared with private web sites ( P < 0.05). Readability was poor among all web sites, with most web sites not achieving below a ninth grade reading level. CONCLUSIONS Quality, reliability, and readability scores were low for most web sites. Although institutional web sites achieved higher scores than private web sites, revision is warranted to improve their overall quality of information and readability profile.
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Affiliation(s)
| | | | - Penny A. Asbell
- Department of Ophthalmology, Hamilton Eye Institute–University of Tennessee, Memphis, TN
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Garcia-Terraza AL, Jimenez-Collado D, Sanchez-Sanoja F, Arteaga-Rivera JY, Morales Flores N, Pérez-Solórzano S, Garfias Y, Graue-Hernández EO, Navas A. Reliability, repeatability, and accordance between three different corneal diagnostic imaging devices for evaluating the ocular surface. Front Med (Lausanne) 2022; 9:893688. [PMID: 35966863 PMCID: PMC9372285 DOI: 10.3389/fmed.2022.893688] [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: 03/10/2022] [Accepted: 07/14/2022] [Indexed: 11/13/2022] Open
Abstract
Purpose To evaluate repeatability, reproducibility, and accordance between ocular surface measurements within three different imaging devices. Methods We performed an observational study on 66 healthy eyes. Tear meniscus height, non-invasive tear break-up time (NITBUT) and meibography were measured using three corneal imaging devices: Keratograph 5M (Oculus, Wetzlar, Germany), Antares (Lumenis, Sidney, Australia), and LacryDiag (Quantel Medical, Cournon d'Auvergne, France). One-way ANOVAs with post hoc analyses were used to calculate accordance between the tear meniscus and NITBUT. Reproducibility was assessed through coefficients of variation and repeatability with intraclass correlation coefficients (ICC). Reliability of meibography classification was analyzed by calculating Fleiss' Kappa Index and presented in Venn diagrams. Results Coefficients of variation were high and differed greatly depending on the device and measurement. ICCs showed moderate reliability of NITBUT and tear meniscus height measurements. We observed discordance between measurements of tear meniscus height between the three devices, F2, 195 = 15.24, p < 0.01. Measurements performed with Antares were higher; 0.365 ± 0.0851, than those with Keratograph 5M and LacryDiag; 0.293 ± 0.0790 and 0.306 ± 0.0731. NITBUT also showed discordance between devices, F2, 111 = 13.152, p < 0.01. Measurements performed with LacryDiag were lower (10.4 ± 1.82) compared to those of Keratograph 5M (12.6 ± 4.01) and Antares (12.6 ± 4.21). Fleiss' Kappa showed a value of -0.00487 for upper lid and 0.128 for inferior lid Meibography classification, suggesting discrete to poor agreement between measurements. Conclusion Depending on the device used and parameter analyzed, measurements varied between each other, showing a difference in image processing.
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Affiliation(s)
- Abril L. Garcia-Terraza
- Department of Cornea and Refractive Surgery, Conde de Valenciana Institute of Ophthalmology, Mexico City, Mexico
- Faculty of Medicine, Autonomous University of Baja California, Mexicali, Baja California, Mexico
| | - David Jimenez-Collado
- Department of Cornea and Refractive Surgery, Conde de Valenciana Institute of Ophthalmology, Mexico City, Mexico
- School of Medicine, Panamerican University, Mexico City, Mexico
| | - Francisco Sanchez-Sanoja
- Department of Cornea and Refractive Surgery, Conde de Valenciana Institute of Ophthalmology, Mexico City, Mexico
- Faculty of Health Sciences North Campus, Anáhuac University, Mexico City, Mexico
| | - José Y. Arteaga-Rivera
- Department of Cornea and Refractive Surgery, Conde de Valenciana Institute of Ophthalmology, Mexico City, Mexico
| | - Norma Morales Flores
- Department of Cornea and Refractive Surgery, Conde de Valenciana Institute of Ophthalmology, Mexico City, Mexico
| | - Sofía Pérez-Solórzano
- Department of Cornea and Refractive Surgery, Conde de Valenciana Institute of Ophthalmology, Mexico City, Mexico
| | - Yonathan Garfias
- Department of Cornea and Refractive Surgery, Conde de Valenciana Institute of Ophthalmology, Mexico City, Mexico
| | - Enrique O. Graue-Hernández
- Department of Cornea and Refractive Surgery, Conde de Valenciana Institute of Ophthalmology, Mexico City, Mexico
| | - Alejandro Navas
- Department of Cornea and Refractive Surgery, Conde de Valenciana Institute of Ophthalmology, Mexico City, Mexico
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Tananuvat N, Tansanguan S, Wongpakaran N, Wongpakaran T. Reliability, validity, and responsiveness of the Thai version of the Dry Eye-Related Quality-of-Life Score questionnaire. PLoS One 2022; 17:e0271228. [PMID: 35852996 PMCID: PMC9295941 DOI: 10.1371/journal.pone.0271228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 06/25/2022] [Indexed: 11/29/2022] Open
Abstract
Dry eye disease (DED) is a common and growing eye problem worldwide. Chronic DED symptoms can, subsequently, affect the patients’ quality of life (QOL). This prospective cross-sectional study aimed to assess the reliability, validity, and responsiveness of the Thai version of the Dry Eye-Related Quality-of-Life Score (DEQS-Th) questionnaire and to evaluate its accuracy in DED screening. Psychometric validation was conducted on DED participants. All participants completed the DEQS-Th and other measurements including the Ocular Surface Disease Index (OSDI) and the 5-level EQ-5D (EQ-5D-5L). Internal consistency, concurrent validity, convergent, and discriminant validity were evaluated. The standardized response mean (SRM) was used to evaluate the responsiveness of the DEQS-Th. The optimal cut-off score of DEQS-Th for DED screening was assessed. Among 100 participants with a mean age of 50.9 ± 14.4 years, and 89.0% female, the internal consistency of the DEQS-Th was excellent (Cronbach’s alpha: 0.80–0.92). The test-retest intraclass correlation was 0.82–0.92. It showed concurrent validity with the OSDI (r = 0.694, p < .001) and EQ-5D-5L index scores (r = -0.578, p < .001). DED is suspected if the DEQS-Th score ≥ 18.33 (AUC = 0.897, sensitivity 90.0%, specificity 76.7%) or its Short Form score ≥ 3 (AUC 0.857, sensitivity 93.0%, specificity 63.3%). The SRM of the symptom subscale of DEQS-Th was 0.82, indicating relatively large responsiveness, whereas the impact on daily life subscale and the summary score was small. In conclusion, the DEQS-Th is valid and reliable for evaluating the multifaceted effects of DED on a patient’s QOL. It can be useful for primary assessment and monitoring of DED in routine clinical practice.
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Affiliation(s)
- Napaporn Tananuvat
- Faculty of Medicine, Department of Ophthalmology, Chiang Mai University, Chiang Mai, Thailand
- * E-mail:
| | - Sasiwimon Tansanguan
- Faculty of Medicine, Department of Ophthalmology, Chiang Mai University, Chiang Mai, Thailand
| | - Nahathai Wongpakaran
- Faculty of Medicine, Department of Psychiatry, Chiang Mai University, Chiang Mai, Thailand
| | - Tinakon Wongpakaran
- Faculty of Medicine, Department of Psychiatry, Chiang Mai University, Chiang Mai, Thailand
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An Y, Kim H. Sleep disorders, mental health, and dry eye disease in South Korea. Sci Rep 2022; 12:11046. [PMID: 35773440 PMCID: PMC9247087 DOI: 10.1038/s41598-022-14167-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 06/02/2022] [Indexed: 12/02/2022] Open
Abstract
Dry eye disease (DED) is a multifactorial disease of the ocular surface causing severe discomfort, mild ocular irritation, fatigue, pain, visual disturbance, and foreign body sensation. Stress, depression, and sleep disorders are risk factors for DED. We aimed to investigate the association between DED symptoms and composite factors related to mental health (combined sleep duration, psychological stress perception, and history of depressed mood) in Korean adults aged ≥ 20 years in a population-based study using the 2010-2012 Korea National Health and Nutrition Examination Survey data. Symptoms of DED and data on mental health were obtained using questionnaires. Multiple logistic regression analysis was conducted to examine the association between mental health and DED, and adjusted for possible covariates. Subjects with symptoms of DED were more likely to experience short sleep duration, psychological stress perception, and a history of depressed mood [odds ratio (OR) = 1.42, 95% confidence interval (CI) 1.06-1.90; OR = 1.71, 95% CI 1.37-2.14; and OR = 1.37, 95% CI 1.06-1.77, respectively] even after correcting for demographic factors, lifestyle factors, and medical factors. Additionally, participants with symptoms of DED were more likely to experience composite factors related to mental health (OR = 1.91, 95% CI 1.07-3.39). Therefore, ophthalmologists may report difficulties in both sleep and mental health in patients with DED.
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Affiliation(s)
- Youngju An
- Department of Optometry, Baekseok Culture University, Cheonan, 31065, Korea
| | - Hyojin Kim
- Department of Optometry, Division of Health Science, and Graduate School of Health and Welfare, Baekseok University, Cheonan, 31065, Korea.
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Abstract
PURPOSE To evaluate the effect of wearing facemasks on dry eye symptoms and on the tear film while comparing surgical face masks to N95 particulate respirators. METHODS A prospective observational study was conducted at Ain Shams University Hospitals in the period from September 2020 to January 2021. Two hundred volunteers were recruited, and the daily number of hours spent by each participant wearing a facemask was recorded. Recruits were divided into two groups: 100 volunteers were allocated to Group A to use the surgical mask, and 100 participants to Group B to use the N95 particulate respirator. The tear film parameters were assessed at baseline by answering the Ocular Surface Disease Index (OSDI) questionnaire and performing tear break-up time (TBUT), corneal fluorescein staining, and Schirmer-I test Subjects then wore a facemask for 60 min and then the tear film parameters were reassessed by repeating TBUT, corneal staining and Schirmer-I test. RESULTS Facemask use for 60 min significantly worsened all tear film parameters in both groups (P-value <0.0001). The deterioration was significantly larger in Group A subjects (P < 0.0001). The daily number of hours spent wearing a facemask correlated strongly with the OSDI and corneal staining. There was a strong negative correlation between the daily number of hours spent wearing a facemask and Schirmer test, and a weak negative correlation with TBUT. CONCLUSIONS Wearing facemasks during the COVID-19 pandemic is a risk factor for worsening tear film parameters. This deterioration is significantly greater with surgical masks than with N95 particulate respirators and increases with the duration of facemask use.
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Affiliation(s)
- Hisham Samy Shalaby
- Department of Ophthalmology, Faculty of Medicine, Ain Shams University, Cairo, Egypt,Hisham Samy Shalaby, Department of Ophthalmology, Faculty of Medicine, Ain Shams University, Abbassia square, Cairo, Egypt.
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92
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McCann P, Kruoch Z, Qureshi R, Li T. Effectiveness of interventions for dry eye: a protocol for an overview of systematic reviews. BMJ Open 2022; 12:e058708. [PMID: 35672062 PMCID: PMC9174758 DOI: 10.1136/bmjopen-2021-058708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 04/13/2022] [Indexed: 11/15/2022] Open
Abstract
INTRODUCTION Dry eye is a leading cause of ocular morbidity and economic and societal burden for patients and healthcare systems. There are several treatment options available for dry eye and high-quality systematic reviews synthesise the evidence for their effectiveness and potential harms. METHODS AND ANALYSIS We will search the Cochrane Eyes and Vision US satellite (CEV@US) database of eyes and vision systematic reviews for systematic reviews on interventions for dry eye. CEV@US conducted an initial search of PubMed and Embase to populate the CEV@US database of eyes and vision systematic reviews in 2007, which was updated most recently in August 2021. We will search the database for systematic reviews published since 1 January 2016 because systematic reviews more than 5 years are unlikely to be up to date. We will consider Cochrane and non-Cochrane systematic reviews eligible for inclusion. Two authors will independently screen articles. We will include studies that evaluate interventions for dry eye and/or meibomian gland dysfunction with no restriction on types of participants or review language. We will select reliable systematic reviews (ie, those meeting pre-established methodological criteria) for inclusion, assessed by one investigator and verified by a second investigator. We will extract ratings of the certainty of evidence from within each review. We will report the degree of overlap for systematic reviews that answer similar questions and include overlapping primary studies. We will present results of the overview in alignment with guidelines in the Cochrane Handbook of Systematic Reviews of Interventions (Online Chapter 5: Overviews of Reviews), the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement, and an overview of reviews quality and transparency checklist. The anticipated start and completion dates for this overview are 1 May 2021 and 30 April 2022, respectively. ETHICS AND DISSEMINATION This overview will not require the approval of an Ethics Committee because it will use published studies. We will publish results in a peer-reviewed journal. PROSPERO REGISTRATION NUMBER CRD42021279880.
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Affiliation(s)
- Paul McCann
- Department of Ophthalmology, University of Colorado - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Zanna Kruoch
- Cedar Springs Eye Clinic, College of Optometry, University of Houston, Houston, Texas, USA
| | - Riaz Qureshi
- Department of Ophthalmology, University of Colorado - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Tianjing Li
- Department of Ophthalmology, University of Colorado - Anschutz Medical Campus, Aurora, Colorado, USA
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Li L, Jasmer KJ, Camden JM, Woods LT, Martin AL, Yang Y, Layton M, Petris MJ, Baker OJ, Weisman GA, Petris CK. Early Dry Eye Disease Onset in a NOD.H-2h4 Mouse Model of Sjögren's Syndrome. Invest Ophthalmol Vis Sci 2022; 63:18. [PMID: 35727180 PMCID: PMC9233292 DOI: 10.1167/iovs.63.6.18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Purpose To develop a mouse model of human dry eye disease (DED) for investigation of sex differences in autoimmune-associated dry eye pathology. Methods Ocular surface disease was assessed by quantifying corneal epithelial damage with lissamine green stain in the NOD.H-2h4,IFNγ−/−,CD28−/− (NOD.H-2h4 DKO) mouse model of Sjögren's syndrome (SS). Lacrimal gland function was assessed by tear volume quantification with phenol red thread and lacrimal gland inflammation (i.e., dacryoadenitis) was assessed by quantification of immune cell foci, flow cytometric analysis of immune cell composition, and expression of proinflammatory markers. Results The NOD.H-2h4 DKO mouse model of SS exhibits greater age-dependent increases in corneal damage than in NOD.H-2h4 parental mice and demonstrates an earlier disease onset in females compared to males. The severity of ocular surface disease correlates with loss of goblet cell density, increased conjunctivitis, and dacryoadenitis that is more pronounced in NOD.H-2h4 DKO than NOD.H-2h4 mice. B cells dominate lacrimal infiltrates in 16-week-old NOD.H-2h4 and NOD.H-2h4 DKO mice, but T helper cells and macrophages are also present. Lacrimal gland expression of proinflammatory genes, including the P2X7 and P2Y2 purinergic receptors, is greater in NOD.H-2h4 DKO than NOD.H-2h4 mice and correlates with dacryoadenitis. Conclusions Our results demonstrate for the first time that autoimmune dry eye disease occurs in both sexes of NOD.H-2h4 DKO and NOD.H-2h4 mice, with earlier onset in female NOD.H-2h4 DKO mice when compared to males of the same strain. This study demonstrates that both NOD.H-2h4 and NOD.H-2h4 DKO mice are novel models that closely resemble SS-related and sex-dependent DED.
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Affiliation(s)
- Lili Li
- Division of Biochemistry, University of Missouri, Columbia, Missouri, United States.,Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, United States.,Visual Science and Optometry Center, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Kimberly J Jasmer
- Division of Biochemistry, University of Missouri, Columbia, Missouri, United States.,Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, United States
| | - Jean M Camden
- Division of Biochemistry, University of Missouri, Columbia, Missouri, United States.,Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, United States
| | - Lucas T Woods
- Division of Biochemistry, University of Missouri, Columbia, Missouri, United States.,Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, United States
| | - Adam L Martin
- Division of Biochemistry, University of Missouri, Columbia, Missouri, United States.,Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, United States
| | - Yong Yang
- Division of Biochemistry, University of Missouri, Columbia, Missouri, United States.,Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, United States.,Department of Ophthalmology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Maria Layton
- Division of Biochemistry, University of Missouri, Columbia, Missouri, United States.,Division of Biological Sciences, University of Missouri, Columbia, Missouri, United States
| | - Michael J Petris
- Division of Biochemistry, University of Missouri, Columbia, Missouri, United States.,Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, United States.,Department of Ophthalmology, University of Missouri, Columbia, Missouri, United States
| | - Olga J Baker
- Division of Biochemistry, University of Missouri, Columbia, Missouri, United States.,Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, United States.,Department of Otolaryngology-Head and Neck Surgery, University of Missouri, Columbia, Missouri, United States
| | - Gary A Weisman
- Division of Biochemistry, University of Missouri, Columbia, Missouri, United States.,Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, United States
| | - Carisa K Petris
- Department of Ophthalmology, University of Missouri, Columbia, Missouri, United States.,Mason Eye Institute, University of Missouri, Columbia, Missouri, United States
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94
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Fjærvoll H, Fjærvoll K, Magno M, Moschowits E, Vehof J, Dartt DA, Utheim TP. The association between visual display terminal use and dry eye: a review. Acta Ophthalmol 2022; 100:357-375. [PMID: 34697901 DOI: 10.1111/aos.15049] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 10/06/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Dry eye disease (DED) is a multifactorial disease of the tear film and ocular surface. It causes ocular symptoms, reduced quality of life and a considerable economic burden on society. Prolonged use of visual display terminals (VDTs) has been suggested as an important risk factor for DED. PURPOSE This review aims to study the association between DED and VDT use with an emphasis on the prevalence of DED among VDT users and harmful daily duration of VDT use. METHODS A PubMed search was conducted and yielded 57 relevant articles based on a set of inclusion and exclusion criteria. The studies were subclassified according to study design. RESULTS The far majority of the studies showed an association between VDT use and DED or DED-related signs and symptoms. The prevalence of definite or probable DED in VDT and office workers ranged from 26% to 70%, with as few as 1-2 hr of VDT exposure per day being associated with DED. CONCLUSION VDT use is strongly associated with DED. VDT-associated DED is prevalent, but the exact prevalence needs to be further elucidated using standardized DED diagnosis criteria. Furthermore, a safe lower limit of daily VDT use has yet to be established. More research is needed on the effect of digitalization and digital transformation, which are particularly high during the time of the COVID-19 pandemic.
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Affiliation(s)
- Haakon Fjærvoll
- Department of Plastic and Reconstructive Surgery Oslo University Hospital Oslo Norway
- Faculty of Medicine Institute of Clinical Medicine University of Oslo Oslo Norway
| | - Ketil Fjærvoll
- Department of Plastic and Reconstructive Surgery Oslo University Hospital Oslo Norway
- Faculty of Medicine Institute of Clinical Medicine University of Oslo Oslo Norway
| | - Morten Magno
- Department of Plastic and Reconstructive Surgery Oslo University Hospital Oslo Norway
- Faculty of Medicine Institute of Clinical Medicine University of Oslo Oslo Norway
- Department of Medical Biochemistry Oslo University Hospital Oslo Norway
- Department of Ophthalmology University Medical Center Groningen University of Groningen Groningen The Netherlands
| | - Emily Moschowits
- Department of Medical Biochemistry Oslo University Hospital Oslo Norway
| | - Jelle Vehof
- Department of Ophthalmology University Medical Center Groningen University of Groningen Groningen The Netherlands
- Section of Academic Ophthalmology Faculty of Life Sciences and Medicine (FoLSM) School of Life Course Sciences King's College London St Thomas' Hospital London UK
- Department of Epidemiology University Medical Center Groningen University of Groningen Groningen The Netherlands
| | - Darlene A. Dartt
- Schepens Eye Research Institute of Massachusetts Eye and Ear Harvard Medical School Boston MA USA
| | - Tor P. Utheim
- Department of Plastic and Reconstructive Surgery Oslo University Hospital Oslo Norway
- Department of Medical Biochemistry Oslo University Hospital Oslo Norway
- Department of Ophthalmology Drammen Hospital Vestre Viken Trust Drammen Norway
- Department of Ophthalmology Sørlandet Hospital Arendal Arendal Norway
- Department of Computer Science Oslo Metropolitan University Oslo Norway
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95
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What Hundreds of Millions of Patients With Dry Eye Will Find on YouTube: A Quality and Reliability Research of the YouTube Videos. Cornea 2022; 41:1016-1022. [PMID: 35587443 DOI: 10.1097/ico.0000000000003064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 03/29/2022] [Indexed: 11/25/2022]
Abstract
PURPOSE The aim of this study was to evaluate the demographic features, quality, and reliability of YouTube videos addressing dry eye disease (DED). METHODS The term "dry eye disease" has been searched on YouTube. The first 500 videos that emerged using the defined search term were evaluated. Duplicated-split videos, videos shorter than 60 seconds, videos with a language other than English or videos with an unintelligible English accent, and videos unrelated to DED were excluded. Video uploaders, types, origins, durations, and viewer interactions of the videos were noted. DISCERN, the Global Quality Score, and the Video Quality Score (created by the authors) were used to evaluate the video quality. RESULTS Of the 500 videos, 262 videos were excluded, and the remaining 238 videos were evaluated. Videos were of moderate quality on all 3 scoring systems. The medical institute and academic society videos had the highest quality (P < 0.05). The quality of videos uploaded by physicians was significantly lower than medical institute and academic society videos and was higher than the others (P < 0.05). User interactions and video duration were weakly positively correlated with the video quality (P < 0.05). CONCLUSIONS Among YouTube videos on DED, only a minority are of good or excellent quality. Videos uploaded by medical institutes or academic societies scored higher in quality than those uploaded by physicians, which, in turn, scored higher than those uploaded by all others. User interactions were weakly correlated with quality values, suggesting user interactions are not good indicators of the quality of YouTube videos on DED.
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96
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Rolando M, Merayo-Lloves J. Management Strategies for Evaporative Dry Eye Disease and Future Perspective. Curr Eye Res 2022; 47:813-823. [PMID: 35521685 DOI: 10.1080/02713683.2022.2039205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Dry eye disease (DED) is a common disorder that remains challenging from a clinical perspective. Unstable or deficient tear film is a major factor contributing to DED and the inability to resolve the loss of tear film homeostasis that accompanies DED can result in a vicious circle of inflammation and treatment-refractory disease. Recently recognized as a multifactorial disease, the main etiological subtypes of DED are aqueous-deficient and evaporative which exist on a continuum, although evaporative dry eye (EDE) is the more frequent classification. Although attaining greater recognition in recent years, there is currently no consensus and no clear recommendation on how to manage EDE. Clarity on the early diagnosis and treatment of EDE may facilitate the avoidance of progression to chronic inflammation, permanent damage to the ocular surface, and treatment-refractory disease. The purpose of this review was to identify current best practice for management of EDE in order to help clinicians in providing accurate diagnosis and optimized treatment. We summarize recent literature considering the role of the lipid layer on tear film stability, the importance of its composition and of its dynamic behavior, and the link between its malfunction and the insurgence and maintenance of tear film-related diseases. We have provided an assessment of the best management of lipid-deficient EDE based upon an understanding of disease pathophysiology, while indicating the flow of current treatments and possible future evolution of treatment approaches. Lipid containing eye drops may be considered as a step closer to natural tears from artificial aqueous tears because they more closely mimic the aqueous and lipid layers and may be used in combination with other management approaches. As a next step, we recommend working with a wider expert group to develop full guidelines to enable patient-centered management of EDE. Key pointsDry eye is a multifactorial disease of variable presentation with the tendency to become a chronic disease for which it is essential to identify and treat the main pathogenic mechanisms involved and tailor the treatment to the individual patient.Early intervention is needed to prevent the vicious cycle of DED and may require a multi-faceted management approach.EDE is not just a problem of MGD but can be the result of anything affecting blinking, mucin spreading, aqueous layer volume and content.Lipid-containing eye drops may provide significant relief of symptoms by improving the lipid layer and its spreading ability and, as such, are an appropriate component of the overall management of lipid-deficient EDE; natural lipid-containing eye drops should be the preferred treatment.
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Affiliation(s)
| | - Jesús Merayo-Lloves
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica & Universidad de Oviedo, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
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97
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Role of neuroticism and perceived stress on quality of life among patients with dry eye disease. Sci Rep 2022; 12:7079. [PMID: 35490178 PMCID: PMC9056508 DOI: 10.1038/s41598-022-11271-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 04/21/2022] [Indexed: 02/05/2023] Open
Abstract
This hospital-based, cross-sectional observational study aimed to examine whether neuroticism has an impact on stress that is related to dry eye disease (DED) and quality of life (QOL). One hundred participants who had DED completed the Dry Eye-Related Quality-of-Life Score (DEQS) questionnaire, a 5-level EQ-5D (EQ-5D-5L), Neuroticism Inventory (NI), and 10-Item Perceived Stress Scale (PSS). Hierarchical linear regression was applied to determine the predictive effect of the independent variables. Participants' mean age was 50.91 ± 14.3 years, and females totalled 89.0%. Hierarchical linear regression analysis showed that DESQ-Ocular symptoms were the strongest predictor for QOL either assessed by DEQS or EQ-5D, and its effect was lessened when perceived stress and neuroticism were added to the model. The final model explained up to 30-39% variance of the QOL, compared with 13-32% by DESQ-Ocular symptoms alone. QOL of the patients with DED, is not only related to eye symptoms but perceived stress. Moreover, neuroticism was a strong predictor contributing to the QOL among patients with DED. The study showed a significant association between perceived stress, neuroticism and the QOL of patients with DED. Personality has some impact on both subjective dry eye symptoms and impact on daily life, along with the general health-related QOL.
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98
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Kim S, Jang YW, Ku YA, Shin Y, Rahman MM, Chung MH, Kim YH, Kim DH. Investigating the Anti-Inflammatory Effects of RCI001 for Treating Ocular Surface Diseases: Insight Into the Mechanism of Action. Front Immunol 2022; 13:850287. [PMID: 35401555 PMCID: PMC8987014 DOI: 10.3389/fimmu.2022.850287] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 03/03/2022] [Indexed: 11/18/2022] Open
Abstract
The ocular surface is continuously exposed to various environmental factors, and innate and adaptive immunity play crucial roles in ocular surface diseases (OSDs). Previously, we have reported that the topical application of RCI001 affords excellent anti-inflammatory and antioxidant effects in dry eye disease and ocular chemical burn models. In this study, we examined the inhibitory effects of RCI001 on the Rac1 and NLRP3 inflammasomes in vitro and in vivo. Following RCI001 application to RAW264.7 and Swiss 3T3 cells, we measured Rac1 activity using a glutathione-S-transferase (GST) pull-down assay and G-protein activation assay kit. In addition, we quantified the expression of inflammatory cytokines (interleukin [IL]-1β, IL-6, and tumor necrosis factor [TNF]-α) in lipopolysaccharide (LPS)-stimulated RAW264.7 cells using ELISA and real-time PCR. In the mouse ocular alkali burn model, RCI001 was administered via eye drops (10 mg/mL, twice daily) for 5 days, and 1% prednisolone acetate (PDE) ophthalmic suspension was used as a positive control. Corneal epithelial integrity (on days 0-5) and histological examinations were performed, and transcript and protein levels of Rac1, NLRP3, caspase-1, and IL-1β were quantified using real-time PCR and western blotting in corneal tissues collected on days 3 and 5. We observed that RCI001 dose-dependently inhibited Rac1 activity and various inflammatory cytokines in LPS-stimulated murine macrophages. Furthermore, RCI001 restored corneal epithelial integrity more rapidly than corticosteroid treatment in chemically injured corneas. Compared to the saline group, activation of Rac1 and the NLRP3 inflammasome/IL-1β axis was suppressed in the RCI001 group, especially during the early phase of the ocular alkali burn model. Topical RCI001 suppressed the expression of activated Rac1 and inflammatory cytokines in vitro and rapidly restored the injured cornea by inhibiting activation of Rac1 and the NLRP inflammasome/IL-1β axis in vivo. Accordingly, RCI001 could be a promising therapeutic agent for treating OSDs.
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Affiliation(s)
- Seunghoon Kim
- RudaCure Co. Ltd., Incheon, South Korea
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon, South Korea
| | | | | | - Yungyeong Shin
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon, South Korea
| | - Md Mahbubur Rahman
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon, South Korea
| | | | - Yong Ho Kim
- RudaCure Co. Ltd., Incheon, South Korea
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon, South Korea
- *Correspondence: Dong Hyun Kim, ; Yong Ho Kim,
| | - Dong Hyun Kim
- RudaCure Co. Ltd., Incheon, South Korea
- Department of Ophthalmology, Gil Medical Center, Gachon University College of Medicine, Incheon, South Korea
- *Correspondence: Dong Hyun Kim, ; Yong Ho Kim,
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99
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Nichols KK, Donnenfeld ED, Lau C, Syntosi A, Karpecki P, Hovanesian JA. Reduction of Artificial Tears and Use of Adjunctive Dry Eye Therapies After Lifitegrast Treatment: Evidence from Clinical and Real-World Studies. Clin Ophthalmol 2022; 16:909-916. [PMID: 35368241 PMCID: PMC8965331 DOI: 10.2147/opth.s347496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 02/17/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose To assess the frequency of patients reducing the use of artificial tears (ATs) among patients with dry eye disease (DED) following lifitegrast treatment. Patients and Methods Two independent analyses were performed using the data from the 1-year, randomized, multicenter, Phase 3 SONATA trial and a noninterventional, real-world evidence (RWE) study conducted in patients with DED who were treated with lifitegrast in the United States and Canada. In SONATA, patients who had used ATs in the lifitegrast and placebo groups were included. The RWE study reviewed patients’ electronic medical records, prescribing patterns, and practices of physicians throughout the survey. These data were then used to compare the proportion of patients using ATs in the 6-month pre-index period versus the 12-month post-index period. Results Of 293 patients (lifitegrast, n=195; placebo, n=98) from SONATA, 107 (lifitegrast, n=64; placebo, n=43) used ATs during the on-therapy period while 186 (lifitegrast, n=131; placebo, n=55) did not. Of those not using ATs, the proportion of patients in the lifitegrast group at any time was higher (~67% [n=131]) versus placebo (~56% [n=55]); this was the case at all study time-points (Days 90, 180, 270, and 360). The RWE study included 600 patient charts (US, n=550; Canada, n=50); 75.5% (n=453) reported AT use. There was ~40% decrease in the proportion of patients using ATs as adjunct DED therapy to lifitegrast in the post-index period (n=273) versus those in the pre-index period (n=453). Conclusion The findings show that the reliance on AT use can be gradually reduced with lifitegrast treatment, eventually leading to a reduction in disease burden.
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Affiliation(s)
- Kelly K Nichols
- School of Optometry, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Charis Lau
- Retina Global Medical Affairs, Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - Annie Syntosi
- Retina Global Patient Access, Novartis Pharma AG, Basel, Switzerland
| | | | - John A Hovanesian
- Harvard Eye Associates, Laguna Hills, CA, USA
- UCLA Jules Stein Eye Institute, Los Angeles, CA, USA
- Correspondence: John A Hovanesian, Harvard Eye Associates, 24401 Calle de la Louisa, Suites 300-312, Laguna Hills, CA, 92653, USA, Tel +1 949-742-3937, Fax +1 844-479-0584, Email ;
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100
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He B, Iovieno A, Etminan M, Kezouh A, Yeung SN. Effects of hormonal contraceptives on dry eye disease: a population-based study. Eye (Lond) 2022; 36:634-638. [PMID: 33824509 PMCID: PMC8873413 DOI: 10.1038/s41433-021-01517-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/15/2021] [Accepted: 03/24/2021] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Hormonal contraceptives (HCs) are a known risk factor for dry eye disease (DED), yet the relationship between HCs use and DED in women of child-bearing age remains debatable. The aim of this study was to determine the association between HCs and DED in females of reproductive age. METHODS This was a retrospective cohort study using data from IQVIA's electronic medical record (IQVIA, USA). 4,871,504 women (age 15-45) between 2008 and 2018 were followed to the first diagnosis of DED as defined by an ICD-9/10 code. DED cases also required at least two prescriptions of cyclosporine or lifitegrast topical drops within 60 days of the first code. The date of the first code was designated as the index date. Regular HCs users needed to have at least two prescriptions in both the first year and second year prior to the index date. For each case, five controls were selected and matched to cases by age and follow-up time. A conditional logistic regression model was used to adjust for confounders of DED and to calculate odds ratios (ORs). RESULTS HCs users were at a higher risk for DED than non-users. Regular users of HCs were more likely to develop DED (ORs = 2.73, 95% CI [2.21-3.73]) than irregular users. Those who used a greater number of HCs were at a higher risk for DED. CONCLUSIONS This study indicates an increased risk of DED with HCs use in women of child-bearing age.
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Affiliation(s)
- Bonnie He
- Department of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Alfonso Iovieno
- Department of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Mahyar Etminan
- Department of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Abbas Kezouh
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada
| | - Sonia N Yeung
- Department of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, BC, Canada.
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