This study evaluates long-term safety in patients with macular edema due to Retinal Vein Occlusion (RVO) originally enrolled in the BRAVO \& CRUISE trials and subsequently followed in the HORIZON extension trial.
There is strong evidence that ranibizumab provides benefit in subjects with macular edema due to RVO; however, some subjects required continued injections for years to maintain those benefits. It is likely that such subjects have continued production of VEGF (Vascular Endothelial Growth Factor) from areas of nonperfused retina in the periphery. One strategy is to perform scatter photocoagulation to areas of nonperfusion to reduce continued production of VEGF, but it is important to know if visual benefits are maintained when this is done, because if it is not, it would be better to continue intermittent injections of ranibizumab.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
66
Intravitreal ranibizumab, .5mg dose, PRN but not less than 21 days apart.
Areas of nonperfusion identified on wide field angiograms will receive laser, if the patient is continuing to require ranibizumab injections.
Retina-Vitreous Associates Medical Group
Beverly Hills, California, United States
Retinal Consultants Medical Group
Sacremento, California, United States
Southeast Retina
Augusta, Georgia, United States
Ophthalmic consultants of Boston
Boston, Massachusetts, United States
Incidence of Serious Adverse Events.
Record the serious adverse events, both ocular and non-ocular to gather long-term safety data.
Time frame: 24 mos
Mean Changes in Visual Acuity
Mean changes in visual acuity. Visual acuity is measured using standard ETDRS (Early Treatment Diabetic Retinopathy Study) charts which measure visual acuity in terms of letters( ETDRS Letters) read at a distance of 4 meters away from the chart. The ETDRS letters Score can be from 0 to 100, with 0 representing poor vision and 100 representing best vision.
Time frame: 24 mos from study baseline
Mean Change in Retinal Thickness
Mean change in retinal thickness as measured by OCT (Optical Coherence Tomography).
Time frame: 24 mos from study baseline
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Retina Associates of New Jersey
Teaneck, New Jersey, United States
Retina Consultants of Houston
Houston, Texas, United States