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AIM: This study was performed to determine the incidence of laser iridotomy-related complications among patients with occludable angles in The Philippines. PATIENTS AND METHODS: 1216 eyes of 608 patients who consulted the Glaucoma Service from November 1998 to November 1999 were eligible for inclusion in this retrospective study. A precoded data collection tool was formulated and the members of the Glaucoma Service reviewed the medical records to collect the specified data. RESULTS: Of the 1216 eyes, 219 had occludable angles. The predominant ocular diagnoses were post-surgical intervention such as lens extraction and/or filtering surgery (17.4%), glaucoma suspect (7.0%), primary open angle glaucoma (6.5%), primary angle closure glaucoma (6.0%), and narrow occludable angle (4.0%). Some 10.9% of eyes had laser iridotomy performed, primarily to address narrow occludable angles, with this indication accounting for approximately half of the eyes (52.3%). Acute and chronic angle closure glaucoma were other indications for laser iridotomy. There was a mean reduction in intraocular pressure of 6.43±1.12 mmHg between the initial consultation and the follow-up visit. CONCLUSIONS: The presence of narrow occludable angles is estimated to be 1 in 5 eyes examined at the Glaucoma Service. Of these, only approximately one-third undergo prophylactic laser iridotomy. A prospective cohort study is warranted to verify the conclusions of this investigation.
Prof. Dr. M.V. Aquino, Department of Ophthalmology and Visual Sciences, Philippines General Hospital, Taft Avenue, Ermita, Manila, Phillipines
12.2 Laser iridotomy (Part of: 12 Surgical treatment)