Singh K, Eid T E, Katz L J, Spaeth G L, Augsburger J J
Glaucoma Service, Wills Eye Hospital, Jefferson Medical College, Philadelphia, Pennsylvania, USA.
Am J Ophthalmol. 1997 Dec;124(6):781-6. doi: 10.1016/s0002-9394(14)71695-2.
To determine the effectiveness of Nd:YAG laser membranectomy for reopening blocked glaucoma tube shunts and maintaining the patency over time.
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.
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%).
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.
确定钕：钇铝石榴石激光膜切除术对重新开通阻塞的青光眼引流管及长期维持通畅的有效性。
我们回顾性分析了1990年1月至1996年6月期间13例（13只眼）接受钕：钇铝石榴石激光膜切除术以试图重新开通阻塞的青光眼引流管的患者记录。每次随访时评估眼压和引流管通畅情况。
钕：钇铝石榴石激光膜切除术有效地重新开通了13只眼中11只眼（84.6%）的阻塞性青光眼引流管。两根引流管未能重新开通。7只眼（53.8%）在最初11周内发生再次阻塞；4根引流管（30.8%）在39、82、106和169周的随访期内保持通畅。激光术后并发症包括4只眼（30.8%）出现中度前房反应，2只眼（15.4%）出现前房积血，2只眼（15.4%）出现角膜水肿，1只眼（7.7%）出现眼压峰值，1只眼（7.7%）出现浅前房。
钕：钇铝石榴石激光膜切除术在重新开通阻塞的青光眼引流管方面有效，但在最初成功的病例中随后再次阻塞的发生率相对较高。
