NCT01417858

Intraocular Pressure Control After Anterior Segment Laser - Comparison Between 2 Drugs

Short-term Intraocular Pressure Control After YAG Iridotomy - Comparison Between Brimonidine 0.1% vs. 0.2%

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 50 (estimated)
• Sponsor: Universidade Federal do Paraná · Academic / Other
• Sex: All
• Age: 40 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to compare the intra-ocular (IOP) control efficacy between brimonidine 0.1% vs. 0.2% after laser peripheral iridotomy (LPI).

Detailed description

Postoperative IOP elevation is one of the most common complications after LPI.Previous studies showed that brimonidine 0.2% is effective in blunting IOP spikes after LPI.This prospective randomized double-masked interventional study will include patients with bilateral narrow angles, defined by irido-trabecular contact in \>180o on gonioscopy.Pilocarpine 1% will be used in both eyes, and 30 minutes later, brimonidine 0.1% randomly used in one eye and brimonidine 0.2% in the contra-lateral eye. LPI with Nd:YAG laser is performed 30 minutes later in both eyes by a single glaucoma specialist. IOP measurements are assessed before the use of any eyedrop (basal IOP), 30 minutes after pilocarpine (pre-brimonidine), and 30, 60, 120, 180 minutes after LPI. Pachymetry, ultrasonic biometry, gonioscopy, and total YAG laser energy are recorded. Non-parametric test will be used for analysis.

Conditions

• Glaucoma, Narrow Angle

Interventions

Type	Name	Description
PROCEDURE	YAG laser peripheral iridotomy	1 drop 30 minutes before yag laser iridotomy
PROCEDURE	YAG laser peripheral iridotomy	1 drop 30 minutes before yag laser iridotomy

Timeline

• Start date: 2010-11-01
• Primary completion: 2011-12-01
• Completion: 2012-07-01
• First posted: 2011-08-16
• Last updated: 2011-08-16

Locations

1 site across 1 country: Brazil