Ozurdex for Retinal Vein Occlusion Study (ORVO Study)

Study Overview
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Brief Summary
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To measure the pro-permeability factors in the aqueous humor of patients with persistent/recurrent macular edema after an injection of Ozurdex.

Detailed Description
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To measure various pro-permeability factors in the aqueous humor of patients with persistent/recurrent macular edema despite prior treatment with anti-VEGF agents at baseline and at 4 weeks after intraocular injection of OZURDEX.

Official Title
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Ozurdex for Retinal Vein Occlusion Study (ORVO Study)

Conditions
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Retinal Vein Occlusion

Intervention / Treatment
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* Drug: dexamethasone implant


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Signed informed consent and authorization of use and disclosure of protected health information Age more than or equal to 18 years Diagnosis of macular edema due to central or branch retinal vein occlusion Intraretinal or subretinal fluid in the macula determined by Spectralis OCT Best corrected visual acuity score in the study eye of 20/30 to 20/400 inclusive (Snellen equivalents using the ETDRS protocol at a distance of 4 meters) In the opinion of the investigator, decreased vision in the study eye is due to foveal thickening from vein occlusion and not from other obvious causes of decreased vision Persistent or recurrent edema despite prolonged treatment with an anti-VEFG agent Exclusion Criteria: Scatter laser photocoagulation or macular photocoagulation within 3 months of study entry in the study eye Intraocular surgery in the study eye within 3 months of study entry Use of intraocular or periocular injection of steroids in the study eye (e.g., triamcinolone) within 4 months of study entry Previous use of an anti-VEGF drug within 1 month of study entry Yttrium-Aluminum-Garnet (YAG) laser capsulotomy within 1 month of study entry Any condition that the investigator believes would pose a significant hazard to the subject if investigational therapy were initiated. Inability to comply with study or follow up procedures History of glaucoma or documented history of steroid-induced glaucoma. Patients with active or suspected ocular or periocular infection, including most viral diseases of the cornea and conjunctiva, including active epithelial herpes simplex keratitis (dendritic keratitis), vaccinia, varicella, mycobacterial infections, and fungal diseases. Aphakic eyes with rupture of the posterior lens capsule. Eyes with ACIOL and rupture of the posterior lens capsule. Patients with hypersensitivity to dexamethasone or to any other components of the product

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: CRVO<br>Central Retinal Vein Occlusion | Drug: dexamethasone implant<br> <br> * Other names: Ozurdex;|
| Other: BRVO<br>Branch Retinal Vein Occlusion | Drug: dexamethasone implant<br> <br> * Other names: Ozurdex;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants Who Had a >30% Decrease in the Aqueous Levels of Various Vasoactive Proteins 4 Weeks After an Injection of Ozurdex | Vasoactive protein arrays and Enzyme linked immunosorbent assays were done for patients at baseline and week 4 visit to measure the levels of various pro-permeability factors including VEGF, SDF-1 and Angiopoietin-2. | 4 months |