alexa Evaluation of Nd:YAG laser membranectomy in blocked tubes after glaucoma tube-shunt surgery.
Ophthalmology

Ophthalmology

Journal of Clinical & Experimental Ophthalmology

Author(s): Singh K, Eid TE, Katz LJ, Spaeth GL, Augsburger JJ

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Abstract PURPOSE: To determine the effectiveness of Nd:YAG laser membranectomy for reopening blocked glaucoma tube shunts and maintaining the patency over time. METHODS: We reviewed retrospectively the records of 13 patients (13 eyes) who, during the period January 1990 through June 1996, underwent Nd:YAG laser membranectomy in an attempt to reopen a blocked glaucoma tube shunt. Intraocular pressure and tube patency were evaluated at each follow-up visit. RESULTS: Nd:YAG laser membranectomy effectively opened the blocked glaucoma tube shunts in 11 (84.6\%) of 13 eyes. Two tubes could not be reopened. Reblockage occurred in seven eyes (53.8\%) within the first 11 weeks; four tubes (30.8\%) remained patent through follow-up periods of 39, 82, 106, and 169 weeks. Postlaser complications were moderate anterior chamber reaction in four eyes (30.8\%), hyphema in two eyes (15.4\%), corneal edema in two eyes (15.4\%), pressure spike in one eye (7.7\%), and shallow anterior chamber in one eye (7.7\%). CONCLUSIONS: Nd:YAG laser membranectomy is effective in reopening blocked glaucoma tube shunts but is associated with a relatively high rate of subsequent reblockage in the initially successful cases.
This article was published in Am J Ophthalmol and referenced in Journal of Clinical & Experimental Ophthalmology

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