Thirty-six eyes with refractory glaucoma were operated using a Schocket technique (anterior chamber shunt to an encircling band). The follow-up was more than one year in all cases with a two-year maximum follow up. The intraocular pressure was < or = 25 mmHg in 87.5% to 95% of cases, and < 21 mmHg in 75.8% to 81.5% of cases. The results were analysed for each etiology and compared with those of other series and those of other surgical techniques used in the treatment of this type of glaucoma. (Molteno drainage tube, cyclodiathermy, ultrasonic treatment and yag laser transcleral contact cyclophotocoagulation).