Limboscleral trepanations on 207 eyes were observed postoperatively for 2 to 11 years. Excellent results were obtained in patients over 35, particularly those in the 50 to 70 age group, with chronic open-angle and chronic angle-closure glaucoma. Results were poor in younger age groups, below 35, and in those with secondary glaucoma, particularly where it was associated with inflammatory disease.
Sugar HS. Limboscleral TrepanationEleven Years' Experience. Arch Ophthalmol. 1971;85(6):703-708. doi:10.1001/archopht.1971.00990050705010