Evaluation of the efficacy of laser peripheral iridoplasty in reversing the darkroom provocative test result in Chinese XXXX with primary angle closure status post laser iridotomy.

@entity1 @entity2194 @entity6640 @entity1897 @entity2747
AIM: To investigate the efficacy and safety of @entity6640 laser peripheral iridoplasty (LPIP) for Chinese @entity1 with primary angle closure (PAC) or primary @entity2747 (PACG) status post laser iridotomy in reversing the positive results of the dark room provocative test (DRPT). METHODS: This study was prospective, noncomparative, interventional case series. Thirty-three @entity1 (thirty-eight eyes) with PAC or PACG status post patent laser iridotomy and maintained normal intraocular pressure (IOP) but with positive DRPT results were enrolled. All the subjects were treated with @entity6640 LPIP. DRPT was repeated after @entity6640 LPIP. Results of DRPT were recorded. The visual acuity, IOP and gonioscopy were analyzed before and after @entity6640 LPIP. A minimum time limit for follow-up was 6mo. RESULTS: Thirty-three @entity1 (thirty-eight eyes) were followed for 17.7  8.37mo (range 7-41mo) after LPIP. Positive results of DRPT decreased from 38 eyes to 9 eyes (23.7%) after LPIP. @entity2194 (89.5%) remained unchanged at dynamic gonioscopy throughout the follow-up period after LPIP. CONCLUSION: LPIP decreased positive rates of the DRPT significantly. The mechanism may be that LPIP minimized contact between the peripheral iris and trabecular meshwork, which is a key factor for developing @entity1897 .
