N Tamcelik1, A Ozkiris, A M Sarici. 1. Department of Ophthalmology, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey.
Abstract
BACKGROUND: To evaluate the outcomes of combined viscotrabeculotomy-trabeculectomy in patients with refractory developmental glaucoma and to compare the success and complication rates with classical trabeculotomy-trabeculectomy procedure. PATIENTS AND METHODS: Patients who were selected for this study had cloudy corneas with a diameter of 13 mm or greater and with an initial intraocular pressure (IOP) of 27 mmHg or more, and they were divided into two groups. Group 1 consisted of 40 eyes of 24 patients who had undergone combined viscotrabeculotomy-trabeculectomy with a mean follow-up time of 55.6+/-18.4 months, and group 2 consisted of 35 eyes of 20 patients who had undergone classical trabeculotomy-trabeculectomy with a mean follow-up time of 57.2+/-19.0 months. Pre- and postoperative IOPs, mean antiglaucoma medication, mean corneal diameter, success rates, intra- and postoperative complications were compared between two groups. RESULTS: Mean IOP reduced from a preoperative level of 33.2+/-5.3 and 32.8 mmHg to 14.2+/-3.1 and 15.3+/-3.3 in group 1 and group 2, respectively (P<0.001). The mean number of antiglaucoma medications used after surgery was significantly lower in group 1 (P<0.05). Kaplan-Meier survival analysis showed that the success probability at the last visits was 90 and 71.4% in group 1 and group 2, respectively, and the difference was statistically significant (P=0.01). The most common early postoperative complication was transient IOP elevation in group 1 and hyphema in group 2 (for each, P<0.001). CONCLUSION: Use of viscoelastic materials during trabeculotomy-trabeculectomy may increase the success rate of the procedure by prevention of postoperative hemorrhage, anterior chamber shallowing, adhesion of the incision lips or fibroblastic proliferation.
BACKGROUND: To evaluate the outcomes of combined viscotrabeculotomy-trabeculectomy in patients with refractory developmental glaucoma and to compare the success and complication rates with classical trabeculotomy-trabeculectomy procedure. PATIENTS AND METHODS: Patients who were selected for this study had cloudy corneas with a diameter of 13 mm or greater and with an initial intraocular pressure (IOP) of 27 mmHg or more, and they were divided into two groups. Group 1 consisted of 40 eyes of 24 patients who had undergone combined viscotrabeculotomy-trabeculectomy with a mean follow-up time of 55.6+/-18.4 months, and group 2 consisted of 35 eyes of 20 patients who had undergone classical trabeculotomy-trabeculectomy with a mean follow-up time of 57.2+/-19.0 months. Pre- and postoperative IOPs, mean antiglaucoma medication, mean corneal diameter, success rates, intra- and postoperative complications were compared between two groups. RESULTS: Mean IOP reduced from a preoperative level of 33.2+/-5.3 and 32.8 mmHg to 14.2+/-3.1 and 15.3+/-3.3 in group 1 and group 2, respectively (P<0.001). The mean number of antiglaucoma medications used after surgery was significantly lower in group 1 (P<0.05). Kaplan-Meier survival analysis showed that the success probability at the last visits was 90 and 71.4% in group 1 and group 2, respectively, and the difference was statistically significant (P=0.01). The most common early postoperative complication was transient IOP elevation in group 1 and hyphema in group 2 (for each, P<0.001). CONCLUSION: Use of viscoelastic materials during trabeculotomy-trabeculectomy may increase the success rate of the procedure by prevention of postoperative hemorrhage, anterior chamber shallowing, adhesion of the incision lips or fibroblastic proliferation.