[More than 30 years' successful follow-up of implantation of a Schreck anterior chamber lens].

The authors report on two patients in whom Schreck anterior chamber lenses were successfully tolerated for more than 30 years. In 1955 a lens of this type was implanted in the left eye of an 18-year-old female patient, for unilateral congenital cataract, and in 1956 a 28-year-old man was treated in the same manner one year after a perforating injury. The implants were found to be sheathed in proliferative transparent to whitish tissue from the chamber angle region; both the cornea and intraocular lens were clear and there was no sign of irritation in the anterior chambers. The long courses document the fact that methylacrylate is evidently sufficiently inert over a long period of time to be tolerated by the intraocular structures. The observations support the view that methylacrylate remains unchanged in the eye even for periods of time exceeding 30 years.