advertisement
Abstract #25235 Published in IGR 12-1
Effects of phacoemulsification versus combined phaco-trabeculectomy on drainage angle status in primary angle closure glaucoma (PACG)
Tham CC; Leung DY; Kwong YY; Li FC; Lai JS; Lam DSJournal of Glaucoma 2010; 19: 119-123
PURPOSE: To document anatomic effects of phacoemulsification versus combined phaco-trabeculectomy on drainage angle in primary angle closure glaucoma (PACG). METHODS: Indentation gonioscopy and ultrasound biomicroscopy were performed preoperatively, and then at 1 year after phacoemulsification alone or combined phaco-trabeculectomy in PACG patients. RESULTS: Seventy-two PACG eyes of 72 patients were included in this study. Thirty-eight eyes were randomized into receiving phacoemulsification alone, whereas 34 eyes had combined phaco-trabeculectomy. The mean extent of synechial angle closure was significantly reduced from 266.4 degrees to 198.9 degrees (P<0.001) by phacoemulsification alone, and from 266.0 degrees to 227.2 degrees (P=0.03) by combined surgery. The mean angle opening distance (AOD 500) measured by ultrasound biomicroscopy was significantly increased from 208.0 to 468.0 microm (P<0.001) by phacoemulsification, and from 214.6 to 344.4 microm (P<0.001) by combined surgery. The mean trabecular-ciliary process distance was significantly increased from 824.6 to 1043.6 microm (P<0.001) by phacoemulsification, and from 800.9 to 951.5 microm (P=0.01) by combined surgery. The mean anterior chamber depth was significantly increased from 1798.6 to 3528.4 microm (P<0.001) by phacoemulsification alone, and from 1781.6 to 3297.8 microm (P<0.001) by combined surgery. Phacoemulsification alone resulted in significantly greater postoperative angle opening distance 500 (P<0.001) and anterior chamber depth (P<0.001) than phaco-trabeculectomy. CONCLUSIONS: Phacoemulsification alone resulted in greater opening of drainage angle and greater deepening of anterior chamber than combined phaco-trabeculectomy in PACG eyes. SYNOPSIS: Phacoemulsification alone resulted in greater opening of drainage angle and greater deepening of anterior chamber than combined phaco-trabeculectomy in PACG eyes.
Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, People's Republic of China. clemtham@hkstar.com
Classification:
6.4 Gonioscopy (Part of: 6 Clinical examination methods)
6.12 Ultrasonography and ultrasound biomicroscopy (Part of: 6 Clinical examination methods)
12.12.3 Phacoemulsification (Part of: 12 Surgical treatment > 12.12 Cataract extraction)
12.14.3 Phacoemulsification (Part of: 12 Surgical treatment > 12.14 Combined cataract extraction and glaucoma surgery)
