[Unilateral congenital cataract and visual function].

The authors report the case of a young patient presented with cytomegalovirus infection involving the nervous, respiratory and ocular systems. A congenital monocular cataract associated with a chorioretinal macular scar in the controlateral eye imposed surgical treatment of the cataract. No retinal damages were found in the cataractous eye after surgery. Three years later the visual function is supported by the phakic eye in spite of the relative precocity of surgery (4th month), and of the correct antiambliopic treatment. This case would suggest that the period in which a monocular cataract can be treated with good functional results, should be restricted within the first few weeks of life.