Comparative study to assess efficacy and safety of brinzolamide1% and timolol0.5% fixed combination eye drops versus dorzolamide2% and timolol0.5% fixed combination eye drops in management of open-angle glaucoma

AIM AND OBJECTIVE: To compare the efficacy and safety of brinzolamide1% and timolol0.5% fixed combination eye drops versus dorzolamide2% and timolol0.5% fixed combination eye drops in the treatment of primary open-angle glaucoma DESIGN: Prospective, randomized, comparative, interventional study SETTING: Tertiary eye care centre. MATERIAL AND METHOD: The present study was a comparative study carried out on patients visiting OPD of Ophthalmology Department and diagnosed with primary open-angle glaucoma. Group 1 (n-30 BT) received brinzolamide1% and timolol0.5% fixed combination eye drops, and Group 2 (N-30 DT) patients received dorzolamide2% and timolol0.5% fixed combination eye drops. A complete ophthalmic examination was performed, including Goldmann applanation tonometry. IOP was measured twice daily (9 AM and 4 PM). The patients were evaluated at 2, 4, 8, and 12 weeks. IOP was measured at follow-up. Side effects and tolerability of both drugs were assessed, and patient preference for drugs was noted RESULTS: Mean reduction in morning IOP was significantly more in Group 1 than in Group 2 at 8 weeks and 12 weeks (p < 0.05). Mean reduction in evening IOP was significantly more in Group 1 than in Group 2 at all follow-ups (p < 0.05) CONCLUSION: Brinzolamide1% + timolol0.5% fixed drug combination is more preferred and effective in lowering IOP than dorzolamide2% + timolol0.5% fixed drug combination in patients of primary open-angle glaucoma.