Prevalence of non-strabismic binocular vision anomalies (NSBVA) among university students of North India

Abstract

: To report the clinical profile of Non-Strabismic Binocular Vision Anomalies (NSBVA) among university students in North India.: A cross-sectional study was performed among 180 students of the university between the age of 17-35 years attending Sushant vision care center (SVCC), Gurugram from October 2017- February 2020. A comprehensive eye examination and a detailed orthoptic evaluation for binocular and accommodative dysfunctions was carried out, including sensory and motor examinations. : 102 of the 180 patients were women and 78 were men. The mean age of the sample was found to be 21.8±2.3 years (mean±SD) with an age range of 17-35 years. The prevalence of NSBVA was found to be 62.2%, of which Convergence Insufficiency was found to be most prevalent (37.2%), followed by Accommodative Insufficiency (12.2%), Accommodative Infacility (7.2%), and Accommodative excess (5.5%). Out of the total, 89 students (49%) exhibited ocular symptoms, while the remaining 91 (51%) were asymptomatic; prevalent symptoms included eyestrain, headaches, and watering of the eyes. The study reveals prevalent non-strabismic binocular anomalies among university students, with vergence dysfunctions being more prevalent than accommodating dysfunctions. Convergence Insufficiency is the most common. While some of these anomalies might lead to noticeable symptoms, others remain asymptomatic, potentially contributing to delayed diagnosis. Comprehensive eye exams are essential for university students, encompassing evaluation of accommodative and binocular functions alongside refraction to timely detection and treatment, including lenses, prisms, and vision therapy to enhance visual performance