A survey is presented of the operative results obtained in 45 eyes suffering from congenital glaucoma, primarily operated on using micro-surgical techniques, either goniotomy as described by Worst, or trabeculotomy. Thirty-eight of the 45 eyes have, during an observation period of 1-10 years, average 5.5 years, a normal pressure of less than or equal to 18 mmHg measured using Draeger's technique. A relatively high frequency of recurrence has been found following an average observation period of 3.5 years in patients who were primarily normalized by Worst's goniotomy.