Effect of Fixed Brinzolamide-brimonidine Combination on Intraocular Pressure After Phacoemulsification
Study Details
Study Description
Brief Summary
This study aims to evaluate the effect of fixed brinzolamide-brimonidine combination on intaocular pressure after uncomplicated phacoemulsification surgery.
Patients scheduled for phacoemulsification will be randomly assigned to 1 of 2 groups.
The treatment group will receive 1 drop of brimonidine-brinzolamide fixed combination immediately after surgery, and the control group will receive no treatment. The IOP will be measured preoperatively and at 6, 12, and 24 hours postoperatively.
Condition or Disease | Intervention/Treatment | Phase |
---|---|---|
|
N/A |
Detailed Description
Phacoemulsification with the use of an ophthalmic viscosurgical device (OVD) and implantation of a foldable intraocular lens (IOL) is the preferred technique for cataract surgery today.
OVDs in spite of their advantages in phacoemulsification surgery, have been correlated with intraocular pressure (IOP) increase within the first 24 hours postoperatively. This constitutes a frequent short-term complication of cataract surgery and can lead to corneal edema and pain. This IOP rise may also increase the risk of retinal artery occlusion, ischemic optic neuropathy, and deterioration of preexisting glaucomatous nerve damage.
DuoVisc, an OVD that consists of Viscoat (chondroitin sulfate 4.0%-sodium hyaluronate 3.0%) in combination with Provisc (sodium hyaluronate 1.0%) is the most frequently used OVD during cataract surgery.
To prevent IOP spikes postoperatively, various antiglaucoma agents have been used. Brinzolamide is a carbonic anhydrase inhibitor that acts upon the ciliary processes and reduces aqueous humor secretion.Brimonidine is a highly selective a2-adrenergic agonist that increases uveoscleral outflow and reduces aqueous humor production.
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
---|---|
Active Comparator: Brinzolamide-Brimonidine fixed combination 1 drop of the brinzolamide-brimonidine fixed combination instilled in the patients cul de sac immediately after surgery |
Drug: Brinzolamide-Brimonidine fixed combination
Simbrinza 0.2%-1% Ophthalmic Suspension
Other Names:
|
No Intervention: No topical IOP reducing medication No IOP reducing drops instilled after surgery |
Outcome Measures
Primary Outcome Measures
- IOP at 6 hours after surgery [6 hours postoperatively]
IOP will be measured by the same Goldman applanation tonometer used preoperatively
Secondary Outcome Measures
- IOP at 12 hours after surgery [12 hours postoperatively]
IOP will be measured by the same Goldman applanation tonometer used preoperatively
- IOP at 24 hours after surgery [12 hours postoperatively]
IOP will be measured by the same Goldman applanation tonometer used preoperatively
Eligibility Criteria
Criteria
Inclusion Criteria:
- Patients scheduled to undergo cataract surgery by phacoemulsification.
Exclusion Criteria:
-
previous ocular surgery
-
ocular hypertension
-
pseudoexfoliation syndrome
-
pigment dispersion syndrome
-
glaucoma
-
history of severe cardiovascular disease, cerebral or coronary insufficiency, depression, Raynaud's phenomenon, orthostatic hypotension or thromboangiitis obliterans
-
hypersensitivity to sulfonamides or brimonidine
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
---|---|---|---|---|---|
1 | University Hospital of Patras | Patra | Achaia | Greece | 26504 |
Sponsors and Collaborators
- University Hospital of Patras
Investigators
- Principal Investigator: Constantine Georgakopoulos, MD, PhD, Medical School, University of Patras, Greece
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- 58/15.02.2018/5104