Working…
ClinicalTrials.gov
ClinicalTrials.gov Menu

Effect of Fixed Brinzolamide-brimonidine Combination on Intraocular Pressure After Phacoemulsification

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT03494257
Recruitment Status : Completed
First Posted : April 11, 2018
Last Update Posted : April 11, 2018
Sponsor:
Information provided by (Responsible Party):
Constantinos D. Georgakopoulos, MD, PhD, University Hospital of Patras

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
Cataract Intraocular Pressure Drug: Brinzolamide-Brimonidine fixed combination Not Applicable

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.


Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 62 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description: Prospective randomized double-masked comparative study
Masking: Double (Participant, Investigator)
Masking Description: Patients will be unaware of their groupe assignment. The investigator who will measure the IOP will also be masked to group assignment.
Primary Purpose: Treatment
Official Title: Effect of Fixed Brinzolamide-brimonidine Combination on Intraocular Pressure After Phacoemulsification
Actual Study Start Date : September 4, 2017
Actual Primary Completion Date : March 20, 2018
Actual Study Completion Date : April 6, 2018

Resource links provided by the National Library of Medicine


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 Name: Simbrinza, 0.2%-1% Ophthalmic Suspension

No Intervention: No topical IOP reducing medication
No IOP reducing drops instilled after surgery



Primary Outcome Measures :
  1. IOP at 6 hours after surgery [ Time Frame: 6 hours postoperatively ]
    IOP will be measured by the same Goldman applanation tonometer used preoperatively


Secondary Outcome Measures :
  1. IOP at 12 hours after surgery [ Time Frame: 12 hours postoperatively ]
    IOP will be measured by the same Goldman applanation tonometer used preoperatively

  2. IOP at 24 hours after surgery [ Time Frame: 12 hours postoperatively ]
    IOP will be measured by the same Goldman applanation tonometer used preoperatively



Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Layout table for eligibility information
Ages Eligible for Study:   45 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
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

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03494257


Locations
Layout table for location information
Greece
University Hospital of Patras
Patra, Achaia, Greece, 26504
Sponsors and Collaborators
University Hospital of Patras
Investigators
Layout table for investigator information
Principal Investigator: Constantine Georgakopoulos, MD, PhD Medical School, University of Patras, Greece

Layout table for additonal information
Responsible Party: Constantinos D. Georgakopoulos, MD, PhD, Associate Professor in Ophthalmology, University Hospital of Patras
ClinicalTrials.gov Identifier: NCT03494257     History of Changes
Other Study ID Numbers: 58/15.02.2018/5104
First Posted: April 11, 2018    Key Record Dates
Last Update Posted: April 11, 2018
Last Verified: April 2018

Layout table for additional information
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Constantinos D. Georgakopoulos, MD, PhD, University Hospital of Patras:
phacoemulsification
intraocular pressure
cataract
brinzolamide
brimonidinde
fixed combination
Additional relevant MeSH terms:
Layout table for MeSH terms
Cataract
Lens Diseases
Eye Diseases
Brimonidine Tartrate
Brinzolamide
Antihypertensive Agents
Adrenergic alpha-2 Receptor Agonists
Adrenergic alpha-Agonists
Adrenergic Agonists
Adrenergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Carbonic Anhydrase Inhibitors
Enzyme Inhibitors