Study of Concomitant Strabismus amongstthe EthnicPopulation of Manipur.

Abstract

Objective: To find out the prevalence of concomitant strabismus among ethnic Manipuris of India and the associated refractive changes in concomitant squint. Methods:Complete Ophthalmological, Orthoptic and squint work-up were done for 72 strabismus diagnosed cases from Outpatient Ophthalmology Department in RIMS Hospital. Results: The overall prevalence of strabismus was found to be 2.31% per thousand population, with a higher prevalence of exotropia (58.33%) as compared to esotropia (41.67%). All the patients with strabismus had associated refractive error of varying degrees, most common being hypermetropia (33.3%), followed by myopia (22.92%), myopic astigmatism (22.92%) and hyperopic astigmatism (20.83%). Thus the study showed divergent type of strabismus is more prevalent in mongoloids (Ethnic Manipuris), with hypermetropia being more commonly associated with convergent strabismus and myopia with divergent strabismus.