American Orthoptic Journal Abstract
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Volume 43, 1993, p. 71–76
Monocular OKN Asymmetry and Defective Stereopsis in Parents of Children with Infantile Esotropia (Abstract)
Lynn Parker, C.O., Latif M. Hamed, M.D., Barbara Cassin, C.O., M.Ed.
It is well established that children with infantile esotropia have deficient stereopsis and asymmetrical monocular optokinetic (OKN) nystagmus, even despite successful surgical alignment. On the basis of the assumption that a heritable flaw may underlie these abnormalities, we tested 36 asymptomatic parents of children with infantile esotropia for defects in stereopsis and for monocular OKN asymmetry. Our results showed that these parents had significantly worse stereopsis by TNO Randot test as compared with an age-matched randomly selected control group. However, although parents showed a higher frequency of monocular OKN asymmetry as compared with controls, the difference was not statistically significant.