A Spectrum of Strabismic and Nonstrabismic Binocular Vision Disorders at Binocular Vision Therapy Clinic of a Tertiary Eye Hospital

Purpose: To study the spectrum of strabismic and nonstrabismic binocular vision disorders reported at the binocular vision therapy (BVT) clinic of a tertiary eye care hospital in North India. Design: A retrospective and cross-sectional study. Methods: Records of 513 individuals attending the BVT clinic between March 2019 and February 2020 were reviewed. Comprehensive ocular examinations, including retinoscopy, subjective refraction, and motor and sensory assessments, were conducted. Tests such as the prism-cover test, Titmus stereo acuity test, and worth four dot test were utilized to assess binocular vision. In addition, fusional vergence, accommodation parameters, and Near Point of Convergence were measured. Results: A total of 513 subjects aged 6–60 years participated, with 53.61% males and 46.39% females. Binocular vision disorders fell into two categories: strabismic and nonstrabismic. Among them, 309 (60.2%) had nonstrabismic disorders and 204 (39.8%) had strabismic disorders, including various diagnoses such as esotropia and exotropia. In addition, 24 (4%) patients sought poststrabismus surgery treatment. In the nonstrabismic group, diagnoses included convergence and accommodative issues, with 41 (8%) cases of computer vision syndrome, 2 of esophoria, and 8 of exophoria. Conclusion: This retrospective and cross-sectional study showing the spectrum of binocular disorders through comprehensive examinations and specialized tests, proving beneficial for early detection.