Congenital tritanopia without neuroretinal disease.

Abstract

Recently the view that congenital tritanopia does not exist and that tritanopia is always secondary to ocular disease has been revived. It has been suggested that previous accounts of congenital tritanopia have not adequately excluded ocular disease and specifically that tritanopia thought to be congenital may in fact be secondary to dominantly inherited juvenile optic atrophy, a disease which often presents with signs sufficiently subtle as to go unnoticed by the patient and the examiner. This paper reports the investigation of six tritanopes from two families already documented in the literature as exhibiting congenital tritanopia. The investigation sought evidence of ocular disease and in..