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RecruitingNCT07556406CORE-GAUpdated Apr 29, 2026

Central micrOperimetry and Radial OCT Evaluation in Geographic Atrophy (CORE-GA): a Prospective Pilot Study

An observational study in Age-Related Macular Degeneration and Geographic Atrophy, sponsored by University of California, San Francisco. Recruiting at 1 site in United States. Open to participants aged 55 Years and older. Per ClinicalTrials.gov, last updated 2026-04-29.

Sponsored by University of California, San Francisco · Observational

From the registry’s dates

  • Started Jun 2025; still recruiting 1 year 3 months later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
80
Ages
55 Years and older
Sex
All
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Study summary

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.

02

Conditions studied

  • Age-Related Macular Degeneration
  • Geographic Atrophy

Keywords

  • age-related macular degeneration
  • geographic atrophy
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In context

Macular Degeneration

1,474 studies on the registry are indexed under Macular Degeneration; 206 are open to participants now.

This study's planned enrollment of 80 is below the median of 106 across 421 observational studies indexed under Macular Degeneration.

Browse Macular Degeneration studies →

Lead sponsor

University of California, San Francisco is the lead sponsor of 2,132 studies on the registry; 375 are open to participants now.

Of its 262 completed or terminated interventional studies of FDA-regulated products, 196 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
55 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients with age-related macular degeneration.

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

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):

  1. Non-proliferative diabetic retinopathy involving 10 or more hemorrhages or microaneurysms, or active proliferative diabetic retinopathy
  2. Branch or central retinal vein or artery occlusion
  3. Macular hole
  4. Pathologic myopia
  5. Uveitis
  6. Pseudovitelliform maculopathy
  7. Intraoperative surgery within the last 90 days prior to study eye enrollment
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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
80 participants (estimated)
Patient registry
No

Groups and cohorts

  • Non-central geographic atrophy not being treated

    Patients with age-related macular degeneration who have geographic atrophy that does not involve the fovea.

    Diagnostic Test: Optical coherence tomography · Diagnostic Test: Microperimetry

  • Intermediate age-related macular degeneration

    Patients with intermediate age-related macular degeneration

    Diagnostic Test: Optical coherence tomography · Diagnostic Test: Microperimetry

  • Non-central geographic atrophy currently being treated

    Patients with non-central geographic atrophy from age-related macular degeneration who are currently receiving treatment for this condition.

    Diagnostic Test: Optical coherence tomography · Diagnostic Test: Microperimetry

  • Non-central geographic atrophy initiating treatment

    Patients with non-central geographic atrophy from age-related macular degeneration who will be starting to receive treatment for this condition.

    Diagnostic Test: Optical coherence tomography · Diagnostic Test: Microperimetry

Interventions

  • Diagnostic testOptical coherence tomography

    High-resolution imaging method used to evaluate the structure of the retina

    Also known as: OCT

  • Diagnostic testMicroperimetry

    A functional test that maps retinal sensitivity by measuring how well you can detect lights in different areas of your vision.

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What researchers measure

Primary outcomes

  1. Geographic atrophy progression rate

    Quantify the progression rate of geographic atrophy toward the foveal center over time

    Time frame: 1 year

Secondary outcomes

  1. Longitudinal progression of macular sensitivity over time

    Measure macular sensitivity over time.

    Time frame: 1 year

07

Study locations

1 of 1 sites recruiting
  • University of California, San Francisco
    San Francisco, California 94143, United States
    • Jay M Stewart, MD · Contact · eyestudy@ucsf.edu · 628-206-3123
    • Jay M Stewart, MD · Principal investigator
    Recruiting
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 29, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT07556406
Lead sponsor
University of California, San Francisco
Responsible party
Sponsor
First posted
Apr 29, 2026
Start date
Jun 11, 2025
Primary completion
Jun 11, 2027 (estimated)
Completion
Jun 11, 2027 (estimated)
Last update
Apr 29, 2026

Study contacts

Jay M Stewart, MD
Contact
eyestudy@ucsf.edu
(628) 206-3123
Jay Stewart, MD
principal investigator · University of California, San Francisco

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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