24-Hour Intraocular Pressure With Brinzolamide/Timolol Versus Brimonidine/Timolol

Aristotle University Of Thessaloniki

Status and phase: Completed; Phase 4

Conditions: Glaucoma

Treatments: Drug: Brimonidine/timolol fixed combination drops added to travoprost; Drug: Brinzolamide/timolol fixed combination drops added to travoprost

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT00981786

A434

Details and patient eligibility

About

The proposed crossover study will compare for the first time the quality of 24-hour intraocular pressure control with the combination of travoprost and brinzolamide/timolol compared with travoprost and brimonidine/timolol in glaucoma patients insufficiently controlled with travoprost. This comparison may determine the real efficacy of the two fixed combinations when added to the prostaglandin. The design of the proposed study should facilitate a better understanding of the role of these medications in glaucoma management.

Enrollment: 51 patients

Sex: All

Ages: 29 to 80 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patient has open-angle glaucoma and is older than 29 years
• Patients should exhibit typical disc, or field changes and an untreated morning IOP greater than 25 mm Hg
• Patients are treated for at least 3 months with travoprost and should have demonstrated at least a 20% morning IOP reduction
• Patient deemed by PI to require adjunctive therapy to obtain desired target IOP
• Patient should exhibit IOP greater than 18 mm Hg on travoprost monotherapy (2 separate IOP readings at 10:00)
• Patient has mild to moderate glaucoma (field loss more than 16 dB; cupping 0.8 or less)
• Distance best corrected Snellen visual acuity at least 0.1
• No contraindications to travoprost, brimonidine, brinzolamide and β-blockers
• No history of lack of response (<10% morning IOP reduction) to any medication
• Patient can understand the instructions and adhere to medications

Exclusion criteria

• Female patient of childbearing potential or lactating mother
• History of trauma, inflammation, surgery
• History of past use of steroids (within 2 months), severe dry eyes and use of contact lenses
• Signs of ocular infection, except blepharitis
• Evidence of corneal abnormality that may affect IOP measurements etc
• Closed angle
• History of non-compliance

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Single Blind

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51 participants in 2 patient groups

Brinzolamide/Timolol therapy

Active Comparator group

Description:

Chronic therapy for 3 months with brinzolamide/timolol drops given twice daily added to travoprost drops

Treatment:

Drug: Brinzolamide/timolol fixed combination drops added to travoprost

Drug: Brimonidine/timolol fixed combination drops added to travoprost

Brimonidine/Timolol therapy

Active Comparator group

Description:

Chronic therapy for 3 months with brimonidine/timolol drops given twice daily added to travoprost drops

Treatment:

Drug: Brinzolamide/timolol fixed combination drops added to travoprost

Drug: Brimonidine/timolol fixed combination drops added to travoprost