Assessment of Contrast Sensitivity Function in Indian School Children
Journal Title: PARIPEX-Indian Journal of Research - Year 2015, Vol 4, Issue 5
Abstract
The aim of this study is to find out the normative Contrast Sensitivity Function among Indian School Children. A total of 79 children 8 – 16 years of age whose monocular distant visual acuity is 20/20 (0.0 Log Mar) at 100 % contrast and never had any eye ailments, ophthalmic surgeries, or refractive corrections were selected from a school in India. Visual Acuity at 5% and 2.5% contrast levels were measured with Dr. Lea’s 3 meters distant acuity Translucent symbol charts with ESV 1500 ETDRS Standardized illuminated cabinet. All 79 children showed normal acuities at 100% contrast. The Log Mar acuities mean and standard deviation for 5% and 2.5% contrast sensitivity measurements were found to be 0.11 +/- 0.06 and 0.26 +/- 0.09 respectively. This study found relatively normal visual acuity values at 100% , 5% and 2.5% contrast levels.
Authors and Affiliations
Deiva Krishnasamy, Dr. Uma Kanagala
Keywords
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