Additive Intra-ocular Pressure Reduction Effect of Fixed Combination of Maleate Timolol 0.5%/Dorzolamide 2% on Monotherapy With Latanoprost in Patients With Elevated Intra-ocular Pressure

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the additive effect of dorzolamide/timolol fixed combination in patients undergoing monotherapy with latanoprost.

Official Title
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Additive Intra-ocular Pressure Reduction Effect of Fixed Combination of Maleate Timolol 0.5%/Dorzolamide 2% on Monotherapy With Latanoprost in Patients With Elevated Intra-ocular Pressure: a Prospective, Four-week, Open-label, Randomized, Controlled Clinical Trial.

Conditions
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Glaucoma

Intervention / Treatment
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* Drug: latanoprost


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All patients were at least 18 years old, with unilateral or bilateral open-angle glaucoma (defined as IOP > 21 mmHg, mean of three consecutive measurements, at any time during the day, at the moment of glaucoma diagnosis) or ocular hypertension (IOP> 25 mmHg, mean of three consecutive measurements, at anytime during the day, at the moment of diagnosis). Glaucoma was defined as a reproducible glaucomatous visual field defect based on GHT outside normal limits and/or PSD lower than 0,5% or glaucomatous changes of the optic disc associated to elevated IOP. A visual acuity (ETDRS) of 20/80 or better was required for randomization. Exclusion Criteria: Included woman of childbearing potential, pregnancy, systemic contra-indication to beta-blocker therapy, argon laser trabeculoplasty three months before screening visit, any history of filtering surgery, ocular surgery or uveitis three months before screening visit, hypersensitivity to any compound of the study drugs, concomitant use of any experimental drug, any condition in which treatment with beta-blocker is contraindicated or any other abnormal and/or ocular condition or symptom that would prevent study participation, according to the judgment of the investigator. The use of systemic beta-blocker, if needed, was allowed and not considered an exclusion criterion. Latanoprost non-responders defined as lower than 15% IOP reduction after run-in period with latanoprost monotherapy were excluded from the study.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Latanoprost<br>Latanoprost mono therapy | Drug: latanoprost<br> <br> |
| Experimental: Latanoprost + Fixed combination<br>Latnoprost + Fixed combination | Drug: latanoprost<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| additional IOP reduction obtained with cosopt in addition to xalatan |  | 4 week |