Population Based Assessment of Prevalence and Causes of Vision Impairment in the North-eastern State of Tripura, India - The Tripura Eye Survey.

Ophthalmic Epidemiology
Srinivas MarmamulaRohit C Khanna

Abstract

To report the prevalence and causes of vision impairment (VI) in a population aged ≥40 years from a state-wide survey conducted in the northeastern state of Tripura, India. A population-based cross-sectional study was undertaken where a sample of 4500 people was selected using cluster random sampling methodology. A team comprising of an optometrist and field workers visited the households and conducted the eye examination that included visual acuity assessment, anterior segment examination including lens and fundus examination. VI was defined as presenting visual acuity <6/18 in the better eye and it included moderate VI (<6/18 to 6/60), severe VI (<6/60 to 3/60) and blindness (<3/60). In all, 4109/4500 (91.3%) subjects were examined from 90 clusters. Among those examined, 49.1% were men and 39.6% had no education. The age and gender-adjusted prevalence of VI was 8.7% (95% CI: 7.8-9.6). The prevalence of moderate VI was 6.2% (95% CI: 5.5-7.0), Severe VI was 1.0 (95% CI: 0.7-1.3) and blindness was 1.5% (95% CI: 1.1-1.9). On applying multiple regression analysis, the odds of having VI were higher in older age groups and among women. Overall, cataract was the leading cause of VI (54.5%) followed by uncorrected refractive errors (3...Continue Reading

References

Sep 5, 2012·Indian Journal of Ophthalmology·Srinivas MarmamulaGullapalli N Rao
Oct 11, 2012·North American Journal of Medical Sciences·Guruprasad S BettadapuraTejal S Jayaram
Feb 15, 2013·PloS One·Srinivas MarmamulaRohit C Khanna
Apr 29, 2015·PloS One·Noopur GuptaAmit Bhardwaj
Mar 28, 2017·Indian Journal of Ophthalmology·Praveen VashistAtul Kumar
Oct 17, 2017·The Lancet Global Health·Seth R FlaxmanUNKNOWN Vision Loss Expert Group of the Global Burden of Disease Study

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Citations

Jul 27, 2021·Ophthalmic Epidemiology·Srinivas MarmamulaJill E Keeffe

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