Polymorphic stromal dystrophy.

Strachan (i968) described a bilateral corneal dystrophy in a 62-year-old man, characterized by punctate, irregular opacities located mainly in the deepest layers of the cornea. The middle and superficial layers were involved to a lesser extent. The size and density of the lesions were sufficient to produce a distorted view of the fundus and to break up the red reflex. Some of the larger opacities produced stromal protuberances which made the posterior surface of the cornea irregular. The corrected visual acuity was 6/X2 part in each eye. Strachan regarded the disorder as a form of pre-Descemetic dystrophy. An apparently related disorder was described by Pillat (I939) in a girl whose