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  • Title: Tube-shunt surgery versus neodymium:YAG cyclophotocoagulation in the management of neovascular glaucoma.
    Author: Eid TE, Katz LJ, Spaeth GL, Augsburger JJ.
    Journal: Ophthalmology; 1997 Oct; 104(10):1692-700. PubMed ID: 9331211.
    Abstract:
    OBJECTIVE: To determine the relative effectiveness of neodymium:YAG (Nd:YAG) cyclophotocoagulation (CPC) and tube-shunt surgery on intraocular pressure (IOP) control in eyes with neovascular glaucoma (NVG). DESIGN: Retrospective, case-by-case matched, comparative group study. PARTICIPANTS: Twenty-four patients with NVG treated with noncontact Nd:YAG-CPC were matched with 24 patients who underwent tube-shunt surgery. Matching criteria included the underlying disorder causing angle neovascularization, the lens status, and patient's age. INTERVENTIONS: Tube-shunt surgery or Nd:YAG-CPC. MAIN OUTCOME MEASURE: Postoperative IOP (IOP > or = 6 and < or = 25 mmHg), visual acuity, and presence of any postoperative complications. RESULTS: Satisfactory IOP control (IOP < or = 25 mmHg and > or = 6 mmHg) was achieved in 9 eyes (37.5%) treated with Nd:YAG-CPC compared with 16 eyes (66.7%) receiving a tube-shunt procedure (P = 0.04) over a mean follow-up of 16.9 +/- 14.6 and 15.2 +/- 11.8 months, respectively. In the matched pairs in both groups that had nonequivalent outcomes, the proportions with persistently high IOP or hypotony were both greater in the CPC group than in the tube-shunt group. The cumulative proportion of failure in the CPC group was 20.8% at 6 months, 35.4% at 1 year, and 71.2% at 3 years postoperatively. In the tube-shunt group, the cumulative proportions of failure at 6 months and 1 year were close to those in the CPC group (12.5% and 29.2%, respectively), but lower 3 years after surgery (43.3%). Eleven eyes (45.8%) in the CPC group lost light perception versus four eyes (16.7%) in the tube-shunt group. Complication rate was higher in the tube-shunt group. CONCLUSIONS: This study suggests that, in the management of NVG, tube-shunt surgery more frequently controls IOP in a satisfactory range, with less hypotony and less visual loss, than noncontact Nd:YAG-CPC.
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