[Dominant inheritance of pupillary pigment cysts. A follow-up study]

In 1969 Meyer described in this journal a family suffering from multiple congenital pigmented pupillary cysts with dominant mode of inheritance. The therapy--total iridectomy and photocoagulation of the cysts--resulted in only a temporary improvement in visual acuity. The cysts were between 1.5 and 5.0 mm in diameter. The present author recently examined a member of this family with severe contusion of the left eyeball. The trauma had evidently opened the residual embryonal ring sinus of the fetal iris system (von Szily). While the traumatic mydriasis persisted, the cysts did not refill.