Cataract extraction with the aid of alpha-chymo-trypsin.

In all cases section was made with the von Graefe knife and one to three corneoscleral sutures were inserted. Peripheral iridectomy was performed in all except two cases where the iridectomy was complete. Alpha-chymo-trypsin (A.C.T.) 1: 5000 solution was injected through the iridectomy above and posterior to the iris below. After exactly 3 minutes the anterior chamber was irrigated with saline and the lens was removed by traction. In 24 cases the mechanical erisophaket was used, and in eight the capsule forceps (Arruga). Where capsule forceps were employed the lens capsule was gripped above in the 12 o'clock position.