Active clinical trials for "Glaucoma, Angle-Closure"

This study will evaluate the safety and efficacy of patients switched from latanoprost monotherapy to a combination therapy of latanoprost with COMBIGAN® (brimonidine 0.2%/timolol 0.5% fixed combination ophthalmic solution) for chronic angle closure glaucoma.

In this prospective study, consecutive patients with advanced PACG and cataract who underwent Phaco-IOL-EGSL were invited to participate. Inclusion and exclusion criteria Inclusion criteria included: a diagnosis of PACG according to the International Society of Geographical & Epidemiological Ophthalmology (ISGEO) diagnostic criteria,14 visual field score ≥18 calculated (as per the method used in the Advanced Glaucoma Intervention Study [AGIS]),15 treatment with IOP-lowering drugs for more than 3 months, and mild to moderate cataract. Exclusion criteria included: secondary angle-closure glaucoma and previous history of surgery, except laser peripheral iridotomy. Preoperative and postoperative examinations Preoperative examinations included: best corrected logMAR visual acuity (BCVA), number of intraocular pressure (IOP) lowering drugs, slit lamp and fundus examination, gonioscopy, Goldmann applanation tonometry and ultrasound biomicroscopy (UBM). Visual field tests were conducted with a Humphrey Visual Field Analyzer II. All patients were reviewed at 1 week, 1 month, 3 months, 6 months and 12 months after surgery. The number of IOP-lowering drugs and IOP was observed and recorded at each follow-up. The extent of peripheral anterior synechiae , the BCVA and the visual field were recorded at 12 months following surgery. Surgery procedure All patients used IOP-lowering drugs before surgery; IOP was controlled under 21mmHg where possible. If the preoperative IOP was over 40mmHg a preoperative anterior chamber paracentesis was performed. All surgeries were performed by the same experienced surgeon (WP). Intraoperative and postoperative complications were recorded. In all patients, phacoemulsification was performed first. After implantation of the IOL, an ophthalmic endoscope (OE) probe was inserted into the anterior chamber to visualize the PAS through the main incision and side incision. A viscoelastic agent was injected towards the root of the iris where PAS existed. Then a blunt iris spatula was used to release the areas where PAS remained under direct view with the OE. Complete synechialysis was confirmed under the direct view with the OE at the end of the procedure. Success criteria Based on the AGIS study, we defined surgical success as follows: (1) Standard A: IOP<14mmHg using none or one type of IOP-lowering drug; (2) Standard B: IOP <18mmHg using none or one type of IOP-lowering drug.

To establish the correlation of the location of the Nd:YAG laser peripheral iridotomy to the post operative visual symptoms experienced by some patients. The investigators hypothesize that fully uncovered laser peripheral iridotomy will produce less significant dysphotopsia, due to avoidance of the prismatic effect produced by the tear film than those covered.

Sequential Laser Iridotomy uses argon and Nd:yag laser in the first and second steps, respectively. Using q-switched 532 nm laser in the second step is hypothesized to be as good and effective as the conventional Nd:yag laser, because it selectively targets pigmented cells and delivers a short pulse duration of 3 nanoseconds, causing less thermal and collateral damage.

This study is a prospective evaluation of the Hydrus Microstent for the treatment of Primary Angle Closure (PAC) and Primary Angle Closure Glaucoma (PACG) with adjunctive cataract. A total of 20 subjects will be successfully treated with one Hydrus device after completion of cataract extraction with phacoemulsification followed by IOL replacement (HMS cohort), and 10 eyes will be treated with phacoemulsification cataract extraction and IOL replacement only (PCS group). Since cataract surgery is standard of care for this condition, eligible fellow eyes from the HMS cohort may be enrolled into the PCS group. To avoid selection bias in this non-randomized study, the first 20 consecutive qualifying subjects will be treated with Hydrus and the next 10 consecutive qualifying eyes will be treated with cataract surgery only.

This prospective study included patients with primary angle-closure (PAC or primary angle-closure glaucoma (PACG) and visually significant cataract. Phacoemulsification with multifocal intraocular lens (MIOL) or monofocal IOL (mIOL) (patient preference) was performed. Collected data included best-corrected distant visual acuity (BCVA), intraocular pressure (IOP), anterior chamber depth (ACD), and contrast sensitivity (CS) measured at spatial frequency 1.5, 3.0, 6.0, 12.0, and 18.0 cycles per degree (CPD) preoperatively, and at 2-6 months postoperatively. Preoperative and postoperative parameters were compared to evaluate the effect of MIOL on CS in eyes with PAC or PACG.

Purpose: To evaluate short-term angle opening after argon peripheral iridoplasty using AS-OCT and to report its complications at 1-week and 1-month follow up in patients that did not achieve a satisfactory clinical angle opening despite patent laser peripheral iridotomy. Design: Prospective, Interventional case series Subjects: Patients with an occludable angle in more than two quadrants in dark room indentation gonioscopy and patent iridotomies of at least 2 weeks, with assessment of persistent angle closure aetiology by ultrabiomicroscopy and A-scan ultrasound are included. Patients will undergo complete examination and AS-OCT before ALPI, one week and one month after it. We analyzed the images in a masked manner and took the angle measurements (AOD500, AOD 750, TISA500, TISA750, ARA500, ARA 750, Lens vault) at 0° and 180° as the main outcome measure to determine effectiveness.

This study will evaluate the safety and IOP-lowering effectiveness of XEN in patients with Angle Closure Glaucoma.

To compare the safety and effectiveness between ologen collagen matrix and mitomycin-C (MMC) in glaucoma surgery. The ologen collagen matrix implantation procedure is same as traditional trabeculectomy except implant the ologen collagen matrix on the top of sclera flap after one loose stich the sclera flap. The MMC application is as the standard.

The purpose of this study is to demonstrate that the Intraocular Pressure (IOP) lowering efficacy of Travoprost Ophthalmic Solution 0.004% is superior to that of Pilocarpine 1% in patients with chronic angle-closure glaucoma (CACG).