Congenital corneal anisohypesthesia: report of a case.

A neuroparalytic ulcer developed only in the right eye of a three-year-old girl with bilateral congenital corneal hypesthesia. The central parts of the cornea in both eyes were practically isohypesthetic, but there was a marked difference in sensitivity in the peripheral zones of the right and left cornea. Presumably there was sufficient peripheral antidromic activity of the sensory nerves in the left cornea to prevent the development of a neuroparalytic ulcer.