Intravitreal Avastin Versus Intravitreal Avastin and Triamcinolone in Central Retinal Vein Occlusion(CRVO)

February 20, 2007 updated by: Shahid Beheshti University of Medical Sciences
In this study we intend to evaluate and compare the outcomes of intravitreal avastin versus avastin and triamcinolone on improving the visual acuity and macular edema and late complications of CRVO like NVI and NVG.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Central retinal vein occlusion (CRVO) is a common retinal vascular disorder with potentially complications like reduced vision resulting from extensive intraretinal hemorrhage, retinal ischemia and persistent macular edema and neovascular glaucoma secondary to iris neovascularization. Macular edema is a common cause of severe visual loss in both branch retinal vein occlusion (BRVO) and central retinal vein occlusion (CRVO). Natural history data indicate that CRVO patients presenting with poor visual acuity (_20/200) have an 80% chance of being left with visual acuity less than 20/200 at final visit, whether the CRVO is ischemic or nonischemic at presentation. Treatments that target the secondary effects of venous occlusion, such as grid laser photocoagulation for macular edema and prophylactic panretinal laser photocoagulation for nonperfused CRVO, were shown to be ineffective in improving visual acuity in the Central Vein Occlusion Study (CVOS). Although panretinal photocoagulation is advocated for reducing the risk of neovascular glaucoma in patients with ischemic CRVO, recent clinical trials have failed to demonstrate any significant benefit with laser photocoagulation in the treatment of macular edema due to CRVO. A number of other treatment options are sometimes used in cases of CRVO, such as oral corticosteroids, intravitreal steroids, vitrectomy, hemodilution, intravitreal tissue plasminogen activator, hyperbaric oxygen, and laser or surgical chorioretinal anastomosis. Studies demonstrating the effectiveness of these treatments are inconclusive, although some benefits have been suggested in recent reports. In recent studies the benefit of antiVEGF agents in improving the macular edema due to CRVO have been shown. In this study we are going to compare the effect of intravitreal antiVEGF (Avastin) with combination of Avastin and Triamcinolon in improving the visual acuity and macular thickness in patients with recent (Less than 6 months) CRVO.

Study Type

Interventional

Enrollment

15

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

40 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • CRVO with duration less than 6 months

Exclusion Criteria:

  • vision less than 20/320 and vison more than 20/50
  • history of galucoma and diabetic retinopathy
  • previous laser or intravitreal treatment
  • any media opacity that prevents funduscopy

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Best corrected visual acuity
Macular thickness by OCT

Secondary Outcome Measures

Outcome Measure
Incidence of NVI

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Shahid Beheshti University of Medical Sciences

Investigators

  • Principal Investigator: Siamak Moradian, MD, Ophthalmic Research Center of Shaheed Beheshti Medical University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

August 1, 2006

Study Completion

February 1, 2007

Study Registration Dates

First Submitted

August 31, 2006

First Submitted That Met QC Criteria

August 31, 2006

First Posted (Estimate)

September 1, 2006

Study Record Updates

Last Update Posted (Estimate)

February 21, 2007

Last Update Submitted That Met QC Criteria

February 20, 2007

Last Verified

February 1, 2007

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 8544 (Other Identifier: Fred Hutch/University of Washington Cancer Consortium)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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