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What is Disscociated veical detion seen in ? and explain in detail?
Ans. is 'c' i.e., Congenital esotropia The usual age of presentation of congenital (infantile) esotropia is between 2-4 months of age. Presentation at bih is very rare. Infantile esotropia has been classically described as large angle constant esotropia (not variable). The classicle triad of associated motor abnormalies in congenital esotropia is inferior oblique overaction, dissociated veical detion (DVD) and latent nystagmus. "It seems, from a review of literature, that infants with esotropia have, on average, refractive errors similar to the normal age matched population". -- Handbook