Visual Function Changes After Intraocular Pressure Reduction

University of Sao Paulo54 enrolled

Overview

During the glaucomatous disease process, subpopulations of cells may be dead, damaged or healthy. Visual function changes could be observed due to a recovering of the suffering ganglion cells after the intraocular pressure reduction. This study aims at evaluating the correlation between intraocular pressure reduction and visual function changes in glaucoma patients after using antiglaucoma medications.

Primary open angle glaucoma patients without use of antiglaucoma medications will be enrolled in this study. After inclusion, the patients will randomly receive one of three antiglaucoma medications (timolol maleate 0,5%, brimonidine tartrate 0,2% or travoprost 0,004%) in one randomly selected eye. The patients will be evaluated with Goldmann applanation tonometry, visual acuity test, contrast sensitivity test, visual quality perception test (visual analogue scale) and standard automated perimetry before and after 4 weeks of glaucoma treatment onset.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Glaucoma

Interventions

timolol maleate 0,5%DRUG

brimonidine tartrate 0,2%DRUG

travoprost 0,004%DRUG

Eligibility

Sex: ALLMin age: 18 YearsMax age: 80 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Primary open angle glaucoma * Intraocular pressure greater than 21 mmHg Exclusion Criteria: * Best corrected visual acuity (BCVA) worse than 20/80 * Significant media opacity * History of steroid use

Outcomes

Primary Outcomes

intraocular pressure

contrast sensitivity

visual quality perception

Secondary Outcomes

Mean deviation of the visual field (MD)

Pattern Standard Deviation of the visual field (PSD)

visual acuity

Data from ClinicalTrials.gov

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