In general the combined cataract/glaucoma operation is a good procedure for treating cataract and glaucoma simultaneously. The operation was performed in 157 eyes between 1976 and 1980. The mean IOP remained constant after surgery for a follow-up period of over three years on average. The review covered 136 eyes, of which 103 needed no therapy initially after the operation; now only 78 have good IOP without drug therapy. It seems that some time after the operation glaucoma therapy is needed again. The question arises whether it is better to perform a combined operation or to perform trabeculectomy first and cataract extraction later, or even if it is better to perform cataract extraction alone and continue with drug therapy for the glaucoma.