A Case of Oguchi's Disease

Oguchi's disease is an unusual form of congenital stationary night blindness that is characterized by a peculiar grey-white discoloration of the retina that gives a metallic sheen. After prolonged dark adaptation, the unusual fundus discoloration disappeared and the retina slowly reverted to its original metallic color after exposure to the light. A 20-year-old man was referred for study because of a complaint of night blindness since childhood. As results of diagnostic work up, especially based on typical ocular fundus finding, dark adaptometry and electrophysiologic studies of the retina the authors have diagnosed as a Oguchi's disease. We report this case with the review of the literature.