[Extended sinusectomy (trabeculectomy with cyclodialysis effect). Late results and analysis of failures]

The trabeculectomy developed independently by Sugar, Vasco-Posada, Koryllos and Cairns is equivalent to a sinusotomy with an additional cyclodialysis effect if the modified technique suggested by Watson is used. About 309 cases are reported, some of which were followed up for up to 12 years. No late failures or complications were observed. Failures are due to absence of the cyclodialysis effect. Regression of a bleb often occurs without any deterioration in intraocular pressure. The development of aqueous veins and scleral vessels around the incision is not uncommon. The causal relationship between postoperative hypotension and the development or spread of cataract is discussed.