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NCT Number: NCT06882356

The Glaucoma and Retinopathy Screening Study

The goal of this clinical trial is to learn if a new screening approach including an artificial intelligence algorithm that analyzes fundus photographs, measurement of eye pressure and visual field testing works to screen for glaucoma.

Participants will:

Have an image of their fundus (back of the eye) taken as part of their diabetic eye screening Have a measurement of their eye pressure If needed, have a test of their side vision using a headset

Recruiting

Interested in participating?

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Key information

Age range

40 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Brigham and Women's Primary Care Associates of Longwood, Boston, Massachusetts, United States

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About this study

Study Overview: This study is a prospective, interventional clinical trial designed to evaluate the effectiveness of an artificial intelligence (AI)-based screening program within community health settings. This study targets especially diabetic patients because they have higher risks of developing glaucoma. By integrating glaucoma screening into existing diabetic eye disease (DED) screenings, the study aims to identify cases of glaucoma earlier, thereby preventing or delaying progression to blindness.

Background: Glaucoma is a chronic eye disease that causes progressive optic nerve damage, often leading to irreversible vision loss. Early detection is critical, as glaucoma is typically asymptomatic in its early stages. Individuals with diabetes are at an elevated risk for glaucoma, making it crucial to develop accessible screening methods. Current DED screening programs already utilize fundus photography for diabetic retinopathy. Adding glaucoma screening to these existing DED screenings may provide an efficient and cost-effective solution to reach high-risk populations without requiring additional clinic visits.

Study Hypothesis: The hypothesis of this study is that incorporating AI-driven glaucoma screening into standard DED screenings will increase the detection rate of glaucoma in high-risk populations compared to DED screening alone. This combined approach is expected to yield better clinical outcomes by enabling early diagnosis and treatment while being cost-effective.

Expected Outcomes and Impact: This study is expected to provide valuable insights into the effectiveness of integrating AI-based glaucoma screening into existing screening programs for diabetic eye disease. If successful, this combined screening approach could be a cost-effective model for other community health settings, leading to earlier detection of glaucoma and improved patient outcomes. By making glaucoma screening more accessible the study aims to reduce health disparities and support preventive eye care.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

  • Individuals with diabetes undergoing AI-based screening for diabetic retinopathy using the LumineticsCore (Digital Diagnostics) system for clinical care at primary care centers.
  • Individuals who are able and willing to provide informed consent for participation in the study.

Treatment and study plan

AI-based glaucoma screening

Device

AI analysis of fundus photographs to detect signs of glaucoma, added to AI-based diabetic eye disease screening performed for routine clinical care

IOP measurement

Device

Intraocular pressure measurement by Icare tonometer

Virtual Reality Visual Field Testing

Device

Virtual Reality Visual Field Testing by the Olleyes device for participants suspected of having glaucoma

Primary outcomes

  1. Glaucoma detection

    Time frame: 1 year from initial screening

    This primary outcome measure will assesses the proportion of participants who receive a glaucoma diagnosis in the combined DED and glaucoma screening group compared to the DED-only screening group. Glaucoma diagnosis in the intervention group is based on AI-assisted analysis of fundus photography, intraocular pressure, and virtual reality perimetry testing for confirmation.

Secondary outcomes

  1. Cost-Effectiveness of Combined Screening vs. DED-Only Screening

    Time frame: 1 year from initial screening

  2. Participant Satisfaction with Screening Process

    Time frame: Day of screening

    This measure assesses participant satisfaction with the glaucoma screening process. Satisfaction will be evaluated through a participant satisfaction survey.

  3. Participant knowledge about glaucoma

    Time frame: Day of screening

    This measure assesses participants' knowledge about glaucoma. Knowledge will be assessed through a questionnaire (NEI Glaucoma Eye-Q test).

Study contacts

Contact information is provided by the study sponsor or research team.

David S Friedman, MD, PhD, MPH

CONTACT

[email protected]

617-573-3094

Sponsors and collaborators

Lead sponsor

Massachusetts Eye and Ear Infirmary

Other

Collaborators

  • Centers for Disease Control and Prevention

Registry information

Official study title

The Glaucoma and Retinopathy Screening Study (GRaSS)

Acronym: GRaSS

Important dates

Study start
2025
Primary completion
2030
Study completion
2030
First posted
Mar 18, 2025
Registry last updated
Aug 28, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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