Ocular lesions in incontinentia pigmenti.

Incontinentia pigmenti is a component of the Bloch-Sulzberger syndrome, which consists also of several major anomalies involving the central nervous system, skeleton, teeth, and the eye. Important manifestations include seizures, mental retardation, microcephaly, deformities of the skull and vertebrae, cleft palate, dystrophy of the nails, and abnormal or missing teeth. Although usually listed as a disease with which congenital cataract is associated, the more important ocular findings are those of the posterior segment, resembling lesions that enter into the differential diagnosis of the white pupil. The skin disturbance is characteristic and occurs very early in life; it may disappear entirely, obscuring the diagnosis if the ocular lesions are discovered later. The Bloch-Sulzberger syndrome usually is inherited as an X-linked dominant with lethality for males. It is a rare but important entity to the pediatric ophthalmologist.