NCT07556406 · University of California, San Francisco
Central micrOperimetry and Radial OCT Evaluation in Geographic Atrophy (CORE-GA): a Prospective Pilot Study
(CORE-GA)
What this study is about
This study is being conducted to assess two imaging methods-central microperimetry and radial OCT (Optical Coherence Tomography)-in patients with Geographic Atrophy (GA) or those who are at risk of developing this condition.
View original scientific description
This study is being conducted to assess two imaging methods-central microperimetry and radial OCT (Optical Coherence Tomography)-in patients with Geographic Atrophy (GA) or those who are at risk of developing this condition. The study team is trying to determine whether these methods can provide more accurate measurements of GA progression toward the foveal center, the central part of the retina responsible for your sharpest, most detailed vision.
Interventions
DIAGNOSTIC_TEST
Optical coherence tomography
High-resolution imaging method used to evaluate the structure of the retina
DIAGNOSTIC_TEST
Microperimetry
A functional test that maps retinal sensitivity by measuring how well you can detect lights in different areas of your vision.
Primary outcome measures
Geographic atrophy progression rate
Time frame: 1 year
Quantify the progression rate of geographic atrophy toward the foveal center over time
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Subjects must be 55+ years of age Subjects in the "Intermediate AMD Observation Arm" must have intermediate age-related macular degeneration in one eye Subjects in the "GA Observation Arm", "GA Continuing Treatment Arm", and "GA Treatment Arm" must have non-central GA (defined as GA has not involved the center point of the fovea) and at least 1% GA in the central 1 mm zone.
Exclusion criteria
- Subjects with central involvement of GA. Central involvement is defined as geographic atrophy involving the foveal center point. Subjects with a baseline size of GA \> 17.5mm2 (7.0 Macular Photocoagulation Study Disc Areas). Subjects who are: pregnant women, adults who cannot consent for themselves, and those who use alcohol in excess. Excess alcohol use is defined by binge drinking (pattern of drinking that brings blood alcohol concentration levels to 0.08 g/dL) on 5 or more days in the past month. Evidence of retinal atrophy due to causes other than atrophic AMD. Subjects who have had anti-VEGF injections or active choroidal neovascularization in the study eye during the last 12 months Current evidence or history of ocular disorders in the study eye that in the opinion of the investigator confounds study outcome measures, including (but not limited to):
- Non-proliferative diabetic retinopathy involving 10 or more hemorrhages or microaneurysms, or active proliferative diabetic retinopathy
- Branch or central retinal vein or artery occlusion
- Macular hole
- Pathologic myopia
- Pseudovitelliform maculopathy
- Intraoperative surgery within the last 90 days prior to study eye enrollment
Where
- San Francisco, California
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Apr 29, 2026 · Source of record for eligibility and locations