Comparison of contrast sensitivity in different types of deviation

Purpose: The aim of the present study is to compare the contrast sensitivity in different types of deviation.
Methods: A pilot, cross sectional, observational study was performed at tertiary eye care centers. Subjects with Ocular deviation between 10 to 40 prism diopters, Corrected distance Contrast sensitivity should be greater than 6/18 and Age should be between 10 to 40 years of age were included in the study. Contrast sensitivity was assessed with Pelli Robson Contrast Sensitivity chart.
Results: 30 subjects were included in the study. Out of that, 16 subjects were in the age group of 11-20 years, 12 subjects were in the age group of 21-30 years and 2 subjects were in the age group of 31-40 years. 60% subjects were Female and 40% subjects were Male. The mean contrast sensitivity was considered in each type of deviation. It shows that contrast sensitivity will be deteriorated more in Esotropia as compared to Exotropia
Conclusions: Deterioration of contrast sensitivity is observed more in Esotropia as compared to Exotropia.