Indian Journal of Ophthalmology

ORIGINAL ARTICLE
Year
: 2017  |  Volume : 65  |  Issue : 7  |  Page : 589--595

Four-year incidence and progression of visual impairment in a South Indian population with diabetes


Sangeetha Srinivasan1, Rajiv Raman1, Suganeswari Ganesan1, Rupak Roy1, Viswanathan Natarajan2, Tarun Sharma1 
1 Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, Chennai, Tamil Nadu, India
2 Department of Preventive Ophthalmology, Sankara Nethralaya, Chennai, Tamil Nadu, India

Correspondence Address:
Rajiv Raman
Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, 18 College Road, Chennai - 600 006, Tamil Nadu
India

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.


How to cite this article:
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


How to cite this URL:
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 [serial online] 2017 [cited 2020 Jul 6 ];65:589-595
Available from: http://www.ijo.in/article.asp?issn=0301-4738;year=2017;volume=65;issue=7;spage=589;epage=595;aulast=Srinivasan;type=0