Correlation of visual acuity and contrast sensitivity in visually disabled patients of moderate to severe diabetic retinopathy
Journal Title: Indian Journal of Clinical and Experimental Ophthalmology - Year 2018, Vol 4, Issue 1
Abstract
Purpose Aims of this study is to characterise the visual disability of patients of moderate to severe diabetic retinopathy in terms of logarithm of minimum angle of resolution LogMAR visual acuity and contrast sensitivityMethods A total of 30 eyes with moderate to severe diabetic retinopathy having low vision WHO Criteria with predefined inclusion and exclusion criteria were included as cases and 40 eyes with normal or near normal visual status correctable by refraction were included as control in the study The visual acuity and contrast sensitivity were noted and analysedResults The best corrected visual acuity BCVA of all eyes in control group is less than 05 LogMAR units Among cases 29967 eyes have BCVA in the range of 05 to 10 LogMAR units and 133 eye has BCVA in the range of 10 to 13 LogMAR units satisfying the inclusion criteria significantly p value lt 0001 In case group direct correlation of association is observed between uncorrected visual acuity and best corrected visual acuity r 069 near visual acuity r 049 best corrected near visual acuity r 064 and inverse correlation of association with contrast sensitivity r 065 which are statistically significant p value lt005Conclusions In patients of diabetic retinopathy with visual impairment irrespective of varying pathology of visual impairment there is a negative correlation between contrast sensitivity and visual acuity in logMAR units The logMAR visual acuity and contrast sensitivity is a better tool than vision assessment by snellen chart for evaluation monitoring and prescription of low vision devices in subjects with visual impairmentKeywords Contrast sensitivity Diabetic retinopathy LogMAR visual acuity Visual impairement
Authors and Affiliations
M. K. Singh, V. P. Singh, P. Bhushan, R. P. Maurya, P. K. Chaturvedi
Keywords
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- EP ID EP474187
- DOI 10.18231/2395-1451.2018.0014
- Views 79
- Downloads 0
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