Evaluation of Blood-retinal Barrier Functional Alterations by Optical Coherence Tomography
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- Enrollment
- 30
- Locations
- 1
- Primary Endpoint
- Optical reflectivity as measured by optical coherence tomography
Study Overview
Brief Summary
The purpose of this study is to identify alterations of the blood-retinal barrier (BRB) in diabetic retinas using a novel non-invasive approach based on the Fourier domain high-definition optical coherence tomograph (OCT).
Detailed Description
Type 2 diabetic patients with nonproliferative diabetic retinopathy (NPDR) (study population) and healthy volunteers (control population).
Inclusion Criteria:
Age over 18 years; type-2 diabetes; NPDR levels 10, 20 and 35/47 (ETDRS severity scale); and an area of retinal leakage of at least 25% of the RLA map (macular area).
Exclusion Criteria:
Presence of media opacity; vitreous syneresis or posterior vitreous detachment, and; previous photocoagulation treatments or any type of intraocular surgery or intravitreal medications; and other retinal pathologies.
Study Design
- Study Type
- Observational
- Observational Model
- Case Control
- Time Perspective
- Prospective
Eligibility Criteria
- Ages
- 18 Years to — (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Age over 18 years; type-2 diabetes; NPDR levels 10, 20 and 35/47 (ETDRS severity scale), and area of retinal leakage of at least 25% of the RLA map (macular area).
Exclusion Criteria
- •Presence of media opacity; vitreous syneresis or posterior vitreous detachment, and; previous photocoagulation treatments or any type of intraocular surgery or intravitreal medications.
Outcomes
Primary Outcomes
Optical reflectivity as measured by optical coherence tomography
Time Frame: 14 months
To analyse OCT reflectivity distribution between areas with and without fluorescein leakage in type 2 diabetic eyes. In previous studies our group found differences, when comparing the histograms of the optical reflectivity distribution, suggesting that the optical reflectivity, as measured by OCT, may change under BRB alterations
Secondary Outcomes
No secondary outcomes reported