Evaluation of symptoms in school aged children with convergence insufficiency

A study was carried out to estimate and compare the frequency of symptoms of a school population of children with normal binocular vision (NBV) and convergence insufficiency (CI). Children with good visual acuity, minimal refractive error, and no strabismus were measured for binocular vision according to a standardized protocol to determine the presence and severity of CL. Analysis of the results confirm the earlier observations that the presence and severity of symptoms associated with CI increase with the number of signs presents.