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Gurudas S, Vasconcelos JC, Prevost AT, Raman R, Rajalakshmi R, Ramasamy K, Mohan V, Rani PK, Das T, Conroy D, Tapp RJ, Sivaprasad S. National prevalence of vision impairment and blindness and associated risk factors in adults aged 40 years and older with known or undiagnosed diabetes: results from the SMART-India cross-sectional study. Lancet Glob Health 2024; 12:e838-e847. [PMID: 38430915 DOI: 10.1016/s2214-109x(24)00035-4] [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: 09/14/2023] [Revised: 01/13/2024] [Accepted: 01/16/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND National estimates of the prevalence of vision impairment and blindness in people with diabetes are required to inform resource allocation. People with diabetes are more susceptible to conditions such as diabetic retinopathy that can impair vision; however, these are often missed in national studies. This study aims to determine the prevalence and risk factors of vision impairment and blindness in people with diabetes in India. METHODS Data from the SMART-India study, a cross-sectional survey with national coverage of 42 147 Indian adults aged 40 years and older, collected using a complex sampling design, were used to obtain nationally representative estimates for the prevalence of vision impairment and blindness in people with diabetes in India. Vulnerable adults (primarily those who did not have capacity to provide consent); pregnant and breastfeeding women; anyone deemed too ill to be screened; those who did not provide consent; and people with type 1 diabetes, gestational diabetes, or secondary diabetes were excluded from the study. Vision impairment was defined as presenting visual acuity of 0·4 logMAR or higher and blindness as presenting a visual acuity of 1·0 logMAR or higher in the better-seeing eye. Demographic, anthropometric, and laboratory data along with geographic distribution were analysed in all participants with available data. Non-mydriatic retinal images were used to grade diabetic retinopathy, and risk factors were also assessed. FINDINGS A total of 7910 people with diabetes were included in the analysis, of whom 5689 had known diabetes and 2221 were undiagnosed. 4387 (55·5%) of 7909 participants with available sex data were female and 3522 (44·5%) participants were male. The estimated national prevalence of vision impairment was 21·1% (95% CI 15·7-27·7) and blindness 2·4% (1·7-3·4). A higher prevalence of any vision impairment (29·2% vs 19·6%; p=0·016) and blindness (6·7% vs 1·6%; p<0·0001) was observed in those with ungradable images. In known diabetes, diabetic retinopathy (adjusted odds ratio [aOR] 3·06 [95% CI 1·25-7·51]), vision-threatening diabetic retinopathy (aOR 7·21 [3·52-14·75]), and diabetic macular oedema (aOR 5·41 [2·20-13·33]) were associated with blindness in adjusted analysis. Common sociodemographic risk factors for vision impairment and blindness include older age, lower educational attainment, and unemployment. INTERPRETATION Based on the estimated 101 million people with diabetes in 2021 and the interpretation of the data from this study, approximately 21 million people with diabetes have vision impairment in India, of whom 2·4 million are blind. Higher prevalence is observed in those from lower socio-economic strata and policy makers should focus on these groups to reduce inequalities in health care. FUNDING Global Challenge Research Fund of United Kingdom Research and Innovation through the Medical Research Council.
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Affiliation(s)
- Sarega Gurudas
- Vision Sciences, UCL Institute of Ophthalmology, London, UK; Centre for Intelligent Healthcare, Coventry University, Coventry, UK; NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust, London, UK
| | - Joana C Vasconcelos
- Nightingale-Saunders Clinical Trials and Epidemiology Unit, King's College London, London, UK
| | - A Toby Prevost
- Nightingale-Saunders Clinical Trials and Epidemiology Unit, King's College London, London, UK
| | - Rajiv Raman
- Retina Department, Vision Research Foundation, Sankara Nethralaya, Chennai, India
| | - Ramachandran Rajalakshmi
- Department of Diabetology and Ophthalmology, Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, Chennai, India
| | - Kim Ramasamy
- Retina Department, Aravind Medical Research Foundation, Madurai, India
| | - Viswanathan Mohan
- Department of Diabetology and Ophthalmology, Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, Chennai, India
| | - Padmaja K Rani
- Srimati Kanuri Santhamma Centre for Vitreoretinal Diseases, Hyderabad Eye Research Foundation, LV Prasad Eye Institute, Hyderabad, India
| | - Taraprasad Das
- Srimati Kanuri Santhamma Centre for Vitreoretinal Diseases, Hyderabad Eye Research Foundation, LV Prasad Eye Institute, Hyderabad, India
| | - Dolores Conroy
- Vision Sciences, UCL Institute of Ophthalmology, London, UK
| | - Robyn J Tapp
- Centre for Intelligent Healthcare, Coventry University, Coventry, UK
| | - Sobha Sivaprasad
- Vision Sciences, UCL Institute of Ophthalmology, London, UK; NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust, London, UK.
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Zheng X, Feng L, Xing C, Wang J, Zhao W, Zhang F. Renal impairment may indicate postoperative low vision in young patients with proliferative diabetic retinopathy undergoing vitrectomy. Front Endocrinol (Lausanne) 2024; 14:1321226. [PMID: 38274226 PMCID: PMC10808762 DOI: 10.3389/fendo.2023.1321226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Abstract
Objective To innovatively evaluate the impact of renal impairment in young work age patients with proliferative diabetic retinopathy (PDR) on their visuality after vitrectomy. Methods To find out whether it is possible to better predict the improvement of visual acuity after vitrectomy in working-age people without adding additional preoperative testing. In view of the fact that diabetic retinopathy and diabetic nephropathy are common diabetic complications of microvascular damage, it is considered whether preoperative renal function can be used as this evaluation index. This paper studies the design under this theme. This retrospective study included 306 patients (306 eyes) diagnosed with PDR and undergoing vitrectomy in our hospital from January 2016 to June 2023. Relevant baseline data were collected, including age, history of kidney disease and clinical laboratory test results. According to the International Standard Logarithmic Visual Acuity Checklist, the best corrected visual acuity was tested on the first day of admission and one month after surgery, and the difference between the two was subtracted. A difference >0 was defined as "vision improved". Patients were classified as vision-improved group (n=245) and non-improved group (n=61). The differences in baseline serum urea nitrogen, creatinine, uric acid, Cystatin C, estimated glomerular filtration rate (eGFR) and urine protein distribution between the two groups were statistically analyzed, binary regression analysis was performed for meaningful parameters, and random forest model ranked the characteristics in importance. Results 1.A higher level of serum cystatin C [1.02(0.80,1.48) mg/L vs 0.86(0.67,1.12) mg/L, P<0.001] and a lower eGFR [82.3(50.33, 115.11) ml/(min/1.73m²) vs 107.69(73.9, 126.01) ml/(min/1.73m²), P=0.002] appeared in the non-(vision-)improved group compared with the vision-improved group. 2. The occurrence of preoperation proteinuria history of nephropathy take a larger proportion in non-improved group. 3. Univariate regression analysis showed history of nephrology (OR=1.887, P=0.028), preoperative serum urea nitrogen (OR=0.939, P=0.043), cystatin C (Cys-C) concentration (OR=0.75, P=0.024), eGFR (OR=1.011, P=0.003) and proteinuria (OR=3.128, P<0.001) were influencing factors to postoperative visual acuity loss in young working age PDR patients. Excluding other confounding factors, preoperative proteinuria is an independent risk factor for postoperative vision improvement in working-age PDR populations (OR=2.722, P=0.009). 4. The accuracy of the prediction random forst model is 0.81. The model appears to be superior in terms of positive prediction. Conclusion In young work aged PDR patients undergoing vitrectomy, preoperative urine protein can be an independent indicator of postoperative visual loss. Aggressive correction of kidney injury before surgery may help improve postoperative vision in patients with PDR.
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Affiliation(s)
- Xiaorong Zheng
- Clinical Laboratory, Hebei Provincial Key Laboratory of Ophthalmology, Hebei Provincial Clinical Research Center for Eye Diseases, Hebei Eye Hospital, Xingtai, Hebei, China
| | - Lin Feng
- Diabetic Eye Disease Ward, Hebei Provincial Key Laboratory of Ophthalmology, Hebei Provincial Clinical Research Center for Eye Diseases, Hebei Eye Hospital, Xingtai, Hebei, China
| | - Chen Xing
- Fundus Imaging and Laser Therapy Department, Hebei Provincial Key Laboratory of Ophthalmology, Hebei Provincial Clinical Research Center for Eye Diseases, Hebei Eye Hospital, Xingtai, Hebei, China
| | - Junlan Wang
- Internal Medicine Department, Hebei Provincial Key Laboratory of Ophthalmology, Hebei Provincial Clinical Research Center for Eye Diseases, Hebei Eye Hospital, Xingtai, Hebei, China
| | - Wei Zhao
- Medical Records Room, Hebei Provincial Key Laboratory of Ophthalmology, Hebei Provincial Clinical Research Center for Eye Diseases, Hebei Eye Hospital, Xingtai, Hebei, China
| | - Fengmei Zhang
- Clinical Laboratory, Hebei Provincial Key Laboratory of Ophthalmology, Hebei Provincial Clinical Research Center for Eye Diseases, Hebei Eye Hospital, Xingtai, Hebei, China
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Zhou Y, Wei J, Wang N, Chen Y, Fang C, Zhou M, Zhou X, Luo J, Wang X, Peng Q. The prevalence, incidence, and persistence of self-reported visual impairment among Chinese population with diabetes mellitus: evaluation from a nationally representative survey, 2015-2018. Front Public Health 2023; 11:978457. [PMID: 37397768 PMCID: PMC10308855 DOI: 10.3389/fpubh.2023.978457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 05/11/2023] [Indexed: 07/04/2023] Open
Abstract
Aims Our aim was to investigate the prevalence, incidence, and persistence of visual impairment (VI) and their correlates among the Chinese population with diabetes mellitus (DM) over 3 years. Materials and methods The China Health and Retirement Longitudinal Survey is the first nationally representative longitudinal survey of the Chinese population. A cross-sectional analysis of prevalent VI in 2015 consisted of 2,173 participants with DM. A longitudinal observation of incident and persistent VI consisted of 1,633 participants from 2015 to 2018. Risk factors of VI were identified via univariate and multivariate logistic regression analyses. Results Among our study population with DM, 11.8% reported VI in 2015, 4.5% had persistent VI from 2015 to 2018, and 8.9% developed VI in 2018. Factors identified to be correlated to VI (p < 0.05) were older age, being a woman, lower educational attainment, living in a rural area, application of DM medication and non-pharmacological treatment, receiving DM-related tests, use of spectacles, and poorer health status. Conclusion This most recent national data provides a baseline for future public health initiatives on VI among the Chinese population with DM. With multiple risk factors identified, these could provide concurrent targets for various public health strategies and interventions with the aim of reducing the burden of VI among the population with DM in China.
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Affiliation(s)
- Yifan Zhou
- Department of Ophthalmology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- Department of Ophthalmology, Putuo People’s Hospital, Tongji University, Shanghai, China
| | - Jin Wei
- Department of Ophthalmology, Shanghai General Hospital, Shanghai, China
- National Clinical Research Center for Eye Diseases, Shanghai, China
| | - Ning Wang
- Department of Ophthalmology, Shanghai General Hospital, Shanghai, China
- National Clinical Research Center for Eye Diseases, Shanghai, China
| | - Yisheng Chen
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Cheng Fang
- Department of Biostatistics, School of Public Health, Fudan University, Shanghai, China
| | - Minwen Zhou
- Department of Ophthalmology, Shanghai General Hospital, Shanghai, China
- National Clinical Research Center for Eye Diseases, Shanghai, China
| | - Xinrong Zhou
- Department of Ophthalmology, Shanghai General Hospital, Shanghai, China
- National Clinical Research Center for Eye Diseases, Shanghai, China
| | - Jianfeng Luo
- Department of Biostatistics, School of Public Health, Fudan University, Shanghai, China
- Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China
- NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, China
| | - Xiaodong Wang
- Shanghai Xin Qi Dian Rehabilitation Hospital, Shanghai, China
| | - Qing Peng
- Department of Ophthalmology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
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Shrestha P, Kaiti R, Shyangbo R. Blindness among Patients with Type II Diabetes Mellitus Presenting to the Outpatient Department of Ophthalmology of a Tertiary Care Centre: A Descriptive Cross-sectional Study. JNMA J Nepal Med Assoc 2022; 60:877-880. [PMID: 36705156 PMCID: PMC9924922 DOI: 10.31729/jnma.7702] [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: 07/21/2022] [Accepted: 09/03/2022] [Indexed: 11/07/2022] Open
Abstract
Introduction Diabetic retinopathy is a major microvascular complication of diabetes, and may progress to sight-threatening stages causing blindness with a consequent decrease in their quality of life. This study aimed to find out the prevalence of blindness among patients with type II diabetes mellitus attending the Outpatient Department of Ophthalmology of a tertiary care hospital. Methods A descriptive cross-sectional study was conducted among patients with type II diabetes mellitus presenting to the Outpatient Department of Ophthalmology of a tertiary care centre from 2 August 2021 to 30 June 2022 after receiving ethical approval from the Institutional Review Committee (Reference number: 74/2021). Diabetic patients underwent detailed eye examination including vision, slit lamp biomicroscopy examination, and fundus evaluation with full pupil dilation. Convenience sampling method was used. Point estimate and 95% Confidence Interval were calculated. Results Among 449 type II diabetic patients, blindness was seen in 17 (3.79%) (2.02-5.56, 95% Confidence Interval) patients. Among them, 1 (5.88%) had severe non-proliferative diabetic retinopathy, 3 (17.65%) had proliferative diabetic retinopathy and 8 (47.06%) had severe diabetic macular oedema. Conclusions The prevalence of blindness among patients with type II diabetes mellitus was less than in other studies conducted in similar settings. Screening and timely management of diabetic retinopathy could reduce the prevalence of blindness due to diabetic retinopathy. Keywords blindness; diabetic retinopathy; prevalence.
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Affiliation(s)
- Pooja Shrestha
- Department of Ophthalmology, Kathmandu University School of Medical Sciences, Dhulikhel, Kavre, Nepal,Correspondence: Dr Pooja Shrestha, Department of Ophthalmology, Kathmandu University School of Medical Sciences, Dhulikhel, Kavre, Nepal. , Phone: +977-9851082192
| | - Raju Kaiti
- Department of Optometry, Nepal Eye Hospital, Tripureshwor, Kathmandu, Nepal
| | - Ranjila Shyangbo
- Department of Optometry, National Academy of Medical Sciences, Mahaboudha, Kathmandu, Nepal
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Giloyan A, Muradyan D, Khachadourian V. Visual impairment and associated risk factors in patients with diabetes mellitus in Tavush and Armavir provinces of Armenia. Int Ophthalmol 2021; 42:47-56. [PMID: 34379291 DOI: 10.1007/s10792-021-01998-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 07/30/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Visual impairment (VI) and blindness remain serious public health problems among patients with diabetes. This study assessed the prevalence of VI and its associated risk factors in individuals with diabetes mellitus (DM) in Armenia. METHODS This cross-sectional study recruited 1287 people with DM. All participants underwent comprehensive ophthalmic examination and responded to a structured questionnaire on sociodemographic and health characteristics, health-seeking behavior, and ocular health. The presence of eye diseases and VI was defined based on the International Classification of Diseases-11. Descriptive statistics and logistic regression were used to address the study objectives. RESULTS The mean age of participants was 61.5 (SD = 9.6) ranging from 19.4 to 99.8 years. The mean duration of diabetes was 7.4 years. The majority of participants (70.5%) were women. The prevalence of VI and blindness was 12.1% and 0.9%, respectively. Overall, 22.4% of participants had diabetic retinopathy. In the adjusted analysis, advanced age (OR = 1.08; 95%CI: 1.06-1.11), higher education (OR = 0.37; 95%CI: 0.19-0.74), diabetes duration (OR = 1.05; 95%CI: 1.02-1.08), the presence of diabetic retinopathy (OR = 3.61; 95%CI: 2.38-5.46), age-related macular degeneration (OR = 1.88; 95%CI: 1.15-3.05), cataract (OR = 2.45; 95%CI: 1.66-3.63), and glaucoma (OR = 2.32; 95%CI: 1.25-4.30) were associated with VI. CONCLUSION The findings highlight the importance and need for regular eye screening and diabetes prevention programs in the country. Continuous educational programs on diabetes self-management among patients with DM can reduce complications of diabetes including vision loss due to diabetes.
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Affiliation(s)
- Aida Giloyan
- Turpanjian School of Public Health, Garo Meghrigian Institute for Preventive Ophthalmology, American University of Armenia, 40 Marshal Baghramian Ave., 0019, Yerevan, Armenia.
| | - Diana Muradyan
- Turpanjian School of Public Health, American University of Armenia, 40 Marshal Baghramian Ave, 0019, Yerevan, Armenia
| | - Vahe Khachadourian
- Turpanjian School of Public Health, American University of Armenia, 40 Marshal Baghramian Ave, 0019, Yerevan, Armenia
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Ma LY, Rong A, Jiang Y, Deng SY. Effects of Femtosecond Laser-Assisted Cataract Surgery on Macular and Choroidal Thickness in Diabetic Patients. Ophthalmol Ther 2021; 10:137-150. [PMID: 33464557 PMCID: PMC7887143 DOI: 10.1007/s40123-020-00326-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 12/15/2020] [Indexed: 11/16/2022] Open
Abstract
Introduction This study aimed to compare the short-term changes in retinal and choroid thickness in diabetic patients after femtosecond laser-assisted cataract surgery (FLACS) and phacoemulsification (PE) surgery. Methods A total of 47 eyes in the PE group and 44 eyes in the FLACS group were included. All patients underwent measurement of central macular thickness (CMT) and subfoveal choroidal thickness (SFCT) before and after surgery using optical coherence tomography (OCT). Results The effective phaco time (EPT) in the FLACS group was significantly reduced. The BCVA differed significantly between the two groups at 1 week and 1 month after surgery. The CMT in both groups increased at 1 week after the operation. It did not return to the preoperative level until month 12 in the PE group. In the FLACS group, the CMT began to decrease at month 3 and recovered to the preoperative level at month 12. The SFCT of the two groups increased at week 1; it began to decrease at month 6 in the PE group but did not recover to the preoperative level until month 12. The SFCT in the FLACS group recovered to preoperative levels at month 6. In the PE group, baseline CMT values predicted CMT change at week 1 and months 1, 3 and 12 after surgery. In the FLACS group, baseline CMT predicted CMT changes at week 1, month 1 and month 3. In the FLACS group, EPT predicted SFCT change at month 3. Conclusion FLACS is safe and effective in patients with no fundus change or mild diabetic retinopathy. It has advantages in effectively reducing EPT, achieving good vision earlier and promoting faster recovery of the retinal and choroidal thickness. Preoperative CMT is a significant predictor of CMT changes in the early period after FLACS.
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Affiliation(s)
- Ling-Yun Ma
- Department of Ophthalmology, Tongji Hospital Affiliated to Tongji University, Shanghai, 200065, China
| | - Ao Rong
- Department of Ophthalmology, Tongji Hospital Affiliated to Tongji University, Shanghai, 200065, China. .,Shanghai Xin Shi Jie Eye Hospital, Shanghai, 200050, China.
| | - Yi Jiang
- Shanghai Xin Shi Jie Eye Hospital, Shanghai, 200050, China
| | - Shu-Ya Deng
- Department of Ophthalmology, Tongji Hospital Affiliated to Tongji University, Shanghai, 200065, China
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Gopalakrishnan S, Muralidharan A, Susheel SC, Raman R. Improvement in distance and near visual acuities using low vision devices in diabetic retinopathy. Indian J Ophthalmol 2017; 65:995-998. [PMID: 29044067 PMCID: PMC5678338 DOI: 10.4103/ijo.ijo_52_17] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Purpose: The aim of this study is to elucidate the causes and level of visual impairment (VI) in patients with different pathologies of diabetic retinopathy (DR) who presented to a low vision care (LVC) clinic, to analyze the type of distant and near devices prescribed to them and the visual benefits thereof. Methods: A retrospective chart review was done for 100 consecutive patients with DR who were referred to the LVC clinic from June 2015 to June 2016. The reason for referral was assessed from the electronic medical records and available fundus photographs, fundus fluorescein angiograms, and optical coherence tomography images by a retina specialist. The details of low-vision devices and subsequent improvements were noted. Results: Of the 100 patients, 52% had moderate VI, 19% mild VI, 16% severe VI, and 13% had profound VI or blindness. The most commonly prescribed low vision device was half-eye spectacles (38.4%). The pathologies which had statistically significant improvement (P < 0.05) in distance vision with low vision devices were DR with disc pallor (4.4% improvement), ischemic maculopathy (11.9% improvement), and plaque of hard exudate (10.1% improvement). However, in all pathologies, there was statistically significant improvement (P < 0.05) in near vision. Conclusion: Usually, the patients with DR presented to the LVC clinic with moderate VI. The use of low vision devices can help these patients in cases where medical and surgical treatment have no or a limited role in restoring useful vision.
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Affiliation(s)
- Sarika Gopalakrishnan
- Shanmugha Arts, Science, Technology & Research Academy (SASTRA) University, Thanjavur; Optometrist, Low Vision Care Clinic, Sankara Nethralaya, Chennai, Tamil Nadu, India
| | | | | | - Rajiv Raman
- Senior Retina Consultant, Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, Chennai, Tamil Nadu, India
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Srinivasan S, Raman R, Ganesan S, Roy R, Natarajan V, Sharma T. Four-year incidence and progression of visual impairment in a South Indian population with diabetes. Indian J Ophthalmol 2017; 65:589-595. [PMID: 28724816 PMCID: PMC5549411 DOI: 10.4103/ijo.ijo_520_16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 05/30/2017] [Indexed: 11/23/2022] Open
Abstract
PURPOSE The aim of this study is to investigate the 4-year incidence and progression of visual impairment (VI) and the associated risk factors for incident VI in a South Indian population with type 2 diabetes. METHODS A total of 634 participants with type 2 diabetes were found eligible after 4 years. Visual acuity (VA) was estimated using the modified Early Treatment Diabetic Retinopathy Study protocol. VA in the better eye was considered for the assessment of VI based on the World Health Organization criteria. Mild VI was defined as VA <20/40 but up to 20/60, moderate VI as VA <20/60 but up to 20/200, severe VI as VA <20/200 but up to 10/200, and blindness as VA worse than 10/200. RESULTS The 4-year incidence of any VI, mild VI, moderate VI, severe VI, and blindness was 21.7%, 18.3%, 3.4%, 0.0%, and 0.0%, respectively; of the 13 participants with VI at baseline, 12 (92%) showed worsening/progression of VI on follow-up. Multiple logistic regression showed that nuclear cataract of grades >4.0 (odds ratio [OR]: 2.612 [1.148-5.942], P = 0.022) and lower socioeconomic score (OR: 0.965 [95% confidence interval, (0.933-0.998)], P = 0.040) were associated with the risk of future incident VI. Refractive error (47%) and cataract (30%) were identified as the leading causes of incident VI at follow-up. CONCLUSIONS VI seems to be a significant problem among diabetic participants in the South Indian population. Refractive error and cataract are the leading but treatable causes of incident VI in this population and would benefit from intervention.
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Affiliation(s)
- Sangeetha Srinivasan
- Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, Chennai, Tamil Nadu, India
| | - Rajiv Raman
- Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, Chennai, Tamil Nadu, India
| | - Suganeswari Ganesan
- Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, Chennai, Tamil Nadu, India
| | - Rupak Roy
- Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, Chennai, Tamil Nadu, India
| | - Viswanathan Natarajan
- Department of Preventive Ophthalmology, Sankara Nethralaya, Chennai, Tamil Nadu, India
| | - Tarun Sharma
- Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, Chennai, Tamil Nadu, India
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Association of alcohol intake with risk of diabetic retinopathy: a meta-analysis of observational studies. Sci Rep 2017; 7:4. [PMID: 28127054 PMCID: PMC5428369 DOI: 10.1038/s41598-017-00034-w] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 12/20/2016] [Indexed: 01/10/2023] Open
Abstract
Diabetic retinopathy (DR) is a common microvascular complication of diabetes mellitus (DM). The associations of alcohol intake with DR risk have demonstrated contradictory results. Relevant studies were identified by searching electronic databases (Medline, EMBASE and Web of Science) until May 2016. We identified a total of 12,875 DR cases among 37,285 participants in 15 observational studies. The pooled estimation of all the included observational studies was 0.91 (95% CI, 0.79 to 1.06) in a random-effect model. Analyses stratified by study design showed no significant association between alcohol intake and DR incidence in cohort, case control or cross-sectional studies. In the subgroup analyses, neither beer nor spirits intake were associated with DR risk. Furthermore, it was interesting to find that protective effects were detected in the wine (OR = 0.77, 95% CI = 0.64 to 0.92) and sherry (OR = 0.22, 95% CI = 0.05 to 0.95) groups. In conclusion, this current meta-analysis demonstrated that alcohol intake was not associated with risk of DR. Subgroup analysis by alcoholic beverage types showed that wine consumption would reduce the incidence of DR. In the future, more large-scale prospective studies with detailed alcohol subtypes and contents are still warranted to clarify the association.
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Lee R, Wong TY, Sabanayagam C. Epidemiology of diabetic retinopathy, diabetic macular edema and related vision loss. EYE AND VISION 2015. [PMID: 26605370 DOI: 10.1186/s40662-015-0026-2 10.1186/s40662-015-0026-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Diabetic retinopathy (DR) is a leading cause of vision-loss globally. Of an estimated 285 million people with diabetes mellitus worldwide, approximately one third have signs of DR and of these, a further one third of DR is vision-threatening DR, including diabetic macular edema (DME). The identification of established modifiable risk factors for DR such as hyperglycemia and hypertension has provided the basis for risk factor control in preventing onset and progression of DR. Additional research investigating novel risk factors has improved our understanding of multiple biological pathways involved in the pathogenesis of DR and DME, especially those involved in inflammation and oxidative stress. Variations in DR prevalence between populations have also sparked interest in genetic studies to identify loci associated with disease susceptibility. In this review, major trends in the prevalence, incidence, progression and regression of DR and DME are explored, and gaps in literature identified. Established and novel risk factors are also extensively reviewed with a focus on landmark studies and updates from the recent literature.
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Affiliation(s)
- Ryan Lee
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore ; Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Tien Y Wong
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore ; Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore ; Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Charumathi Sabanayagam
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore ; Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore ; Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School, Singapore, Singapore
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Lee R, Wong TY, Sabanayagam C. Epidemiology of diabetic retinopathy, diabetic macular edema and related vision loss. EYE AND VISION (LONDON, ENGLAND) 2015. [PMID: 26605370 DOI: 10.1186/s40662-015-0026-2+10.1186/s40662-015-0026-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Diabetic retinopathy (DR) is a leading cause of vision-loss globally. Of an estimated 285 million people with diabetes mellitus worldwide, approximately one third have signs of DR and of these, a further one third of DR is vision-threatening DR, including diabetic macular edema (DME). The identification of established modifiable risk factors for DR such as hyperglycemia and hypertension has provided the basis for risk factor control in preventing onset and progression of DR. Additional research investigating novel risk factors has improved our understanding of multiple biological pathways involved in the pathogenesis of DR and DME, especially those involved in inflammation and oxidative stress. Variations in DR prevalence between populations have also sparked interest in genetic studies to identify loci associated with disease susceptibility. In this review, major trends in the prevalence, incidence, progression and regression of DR and DME are explored, and gaps in literature identified. Established and novel risk factors are also extensively reviewed with a focus on landmark studies and updates from the recent literature.
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Affiliation(s)
- Ryan Lee
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore ; Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Tien Y Wong
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore ; Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore ; Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Charumathi Sabanayagam
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore ; Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore ; Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School, Singapore, Singapore
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Onakpoya OH, Kolawole BA, Adeoye AO, Adegbehingbe BO, Laoye O. Visual impairment and blindness in type 2 diabetics: Ife-Ijesa diabetic retinopathy study. Int Ophthalmol 2015; 36:477-85. [PMID: 26537878 DOI: 10.1007/s10792-015-0145-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 10/17/2015] [Indexed: 12/28/2022]
Abstract
Diabetes and blindness are important health issues globally; we determined the prevalence of blindness, diabetic retinopathy, and other eye diseases in Nigerian-type 2 diabetics. A prospective, cross-sectional study was conducted on consenting type 2 diabetic patients who had scheduled comprehensive eye examination including dilated funduscopy with +78DS. Visual status was graded using the WHO criteria. Approval from Institutional Ethics Committee was obtained. Primary outcome measures were the prevalence and causes of blindness as well as prevalence of diabetic retinopathy. Secondary outcome measures were the presence of other eye diseases. Data were analyzed using SPSS version 13. Two hundred and sixty-six eyes of 133 type 2 diabetic patients aged 22-89 years were studied; 69 (51.9 %) were males while 64 (48.1 %) were females. Five (3.8 %) patients were blind while 27 (20.3 %) were visually impaired. Cataract was the leading cause of blindness (60 %) and visual impairment was found in 59.3 %. Diabetic retinopathy was present in 37 (27.8 %) diabetic patients of which 5 (3.8 %) were proliferative. Diabetic macular edema was present in 31 (23.3 %) patients. Severe visual impairment and blindness were commoner in those with diabetic retinopathy. Refractive error 67 (25.2 %), cataract 63 (23.7 %), and chronic glaucoma 44 (16.5 %) were the most prevalent non-diabetic retinopathy eye diseases. High prevalence of blindness, diabetic retinopathy, and other diseases are seen in type 2 diabetics. Health education, early diagnosis as well as treatment of diabetic retinopathy and other diseases will largely alleviate these ocular morbidities.
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Affiliation(s)
- O H Onakpoya
- Department of Surgery, Faculty of Clinical Sciences, College of Health Sciences, Obafemi Awolowo University/Teaching Hospital, Ile-Ife, 220003, Nigeria.
| | - B A Kolawole
- Department of Medicine, Faculty of Clinical Sciences, College of Health Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - A O Adeoye
- Department of Surgery, College of Health Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - B O Adegbehingbe
- Department of Surgery, College of Health Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - O Laoye
- Eye Centre, Obafemi Awolowo University and Teaching Hospital, Ile-Ife, Nigeria
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Lee R, Wong TY, Sabanayagam C. Epidemiology of diabetic retinopathy, diabetic macular edema and related vision loss. EYE AND VISION 2015; 2:17. [PMID: 26605370 PMCID: PMC4657234 DOI: 10.1186/s40662-015-0026-2] [Citation(s) in RCA: 823] [Impact Index Per Article: 91.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 09/01/2015] [Indexed: 12/15/2022]
Abstract
Diabetic retinopathy (DR) is a leading cause of vision-loss globally. Of an estimated 285 million people with diabetes mellitus worldwide, approximately one third have signs of DR and of these, a further one third of DR is vision-threatening DR, including diabetic macular edema (DME). The identification of established modifiable risk factors for DR such as hyperglycemia and hypertension has provided the basis for risk factor control in preventing onset and progression of DR. Additional research investigating novel risk factors has improved our understanding of multiple biological pathways involved in the pathogenesis of DR and DME, especially those involved in inflammation and oxidative stress. Variations in DR prevalence between populations have also sparked interest in genetic studies to identify loci associated with disease susceptibility. In this review, major trends in the prevalence, incidence, progression and regression of DR and DME are explored, and gaps in literature identified. Established and novel risk factors are also extensively reviewed with a focus on landmark studies and updates from the recent literature.
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Affiliation(s)
- Ryan Lee
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore ; Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Tien Y Wong
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore ; Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore ; Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Charumathi Sabanayagam
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore ; Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore ; Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School, Singapore, Singapore
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Loprinzi PD, Swenor BK, Ramulu PY. Age-Related Macular Degeneration Is Associated with Less Physical Activity among US Adults: Cross-Sectional Study. PLoS One 2015; 10:e0125394. [PMID: 25933421 PMCID: PMC4416755 DOI: 10.1371/journal.pone.0125394] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Accepted: 03/24/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND We have a limited understanding of the effects of age-related macular degeneration (AMD) on physical activity (PA), and we have no prevalence estimates of the daily movement patterns among Americans with AMD. Therefore, we examined the association between AMD and PA and provided estimates of the daily movement patterns of Americans with AMD. METHODS Data from the 2005-2006 National Health and Nutrition Examination Survey were used, including 1,656 adults (40-85 yrs). Retinal imaging was performed to classify individuals as no AMD, early AMD, or late AMD. Participants wore an ActiGraph 7164 accelerometer for 7 days to measure PA behavior. RESULTS 93.2% of participants with late AMD were in the least desirable group (not sufficiently active and having a negative light intensity-sedentary behavior balance). After adjustments (including age), participants with late AMD, as compared to those with no AMD, engaged in 50% less moderate-to-vigorous physical activity (MVPA) (RR = 0.50; 95% CI: 0.28-0.90). When visual acuity was entered into the model along with the other covariates, the association between late AMD and MVPA was no longer significant (RR = 0.54; 95% CI: 0.29-1.01), suggesting that visual acuity may partially mediate this relationship. CONCLUSIONS Individuals with late AMD engage in very little moderate-to-vigorous physical activity. Visually acuity, in part, explains the relationship between late AMD and PA.
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Affiliation(s)
- Paul D. Loprinzi
- The University of Mississippi, Center for Health Behavior Research, Department of Health, Exercise Science, and Recreation Management, University, Mississippi, United States of America
- * E-mail:
| | - Bonnielin K. Swenor
- Wilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
| | - Pradeep Y. Ramulu
- Wilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
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Mabaso RG, Oduntan OA. Risk factors for visual impairment and blindness amongst black adult diabetics receiving treatment at Government healthcare facilities in Mopani District, Limpopo province, South Africa. Afr J Prim Health Care Fam Med 2014; 6:E1-8. [PMID: 26245418 PMCID: PMC4565035 DOI: 10.4102/phcfm.v6i1.623] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 09/12/2014] [Accepted: 05/01/2014] [Indexed: 12/30/2022] Open
Abstract
Background Diabetes mellitus (DM) is a common systemic disease amongst Black South Africans. It may lead to diabetic retinopathy (DR), a common cause of visual impairment (VI) and blindness. DR may significantly increase the prevalence of VI and blindness. Aim To assess risk factors for VI and blindness amongst a black diabetic South African population aged ≥ 40 years. Setting The study was conducted in seven Government healthcare facilities (two hospitals, four clinics and one health centre) in Mopani District, Limpopo province, South Africa. Methods This was a cross-sectional health facility-based quantitative study. Structured interviews were used to obtain information, which included sociodemographic profile, knowledge about DM and its ocular complications, presence of hypertension and accessibility to health facilities. Subsequently participants were examined for VI and blindness using an autorefractor, pinhole disc, ophthalmoscope and logMAR visual acuity chart. Anthropometric measurements (height, weight and waist) were also taken. Associations between 31 risk factors and VI as well as blindness were statistically examined. Results Participants (N = 225) included 161 women and 64 men aged 40–90 years (mean 61.5 ± 10.49 years); 41.3% of them had VI and 3.6% were blind. Cataracts (76.8%) and DR (7.1%) were the common causes of compensated VI and blindness. Risk factors that were associated with VI and blindness were age, monthly income, compliance with losing weight and physical activity. Conclusion Findings suggest that lifestyle intervention and appropriate eyecare programmes may reduce VI and blindness in this population.
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