Visual Field Analysis With Artificial Intelligence (VFAAI)

Visual Field Analysis With Artificial Intelligence: Establishing Normal Threshold Values for Healthy Participants Using a Visual Field Perimeter

The purpose of this study is to analyze visual field data from healthy participants. This data will be used to develop and optimize a new visual field perimeter test. The test will incorporate an advanced algorithm, which may include the use of Artificial Intelligence (AI), to enhance accuracy and efficiency in identifying test points.

Study Overview

• Status: Active, not recruiting
• Conditions: Glaucoma; Visual Field Defect
• Intervention / Treatment: Device: Visual Field Perimeter Optimized with Eye Gaze Capture and Artificial Intelligence

Detailed Description

RESEARCH PROTOCOL

Study Title:

Optimizing Visual Field Analysis using Artificial Intelligence: Establishing Normal Threshold Values for Healthy Participants Using a Visual Field Perimeter

Principal Investigator:

Edward Chay, MD

Site Location:

Sight Intelligence Engineering Corporation 8101 Hinson Farm Road, Suite #208 Alexandria, VA 22306

IRB Approval:

Approved by the Institutional Review Board (IRB) at INOVA

1. Background and Rationale Visual field testing is a key diagnostic tool in ophthalmology for detecting and monitoring conditions such as glaucoma and optic neuropathies. This study aims to establish normative threshold values for a new visual field perimeter in a population of healthy individuals. These baseline values will contribute to the calibration and optimization of a visual field perimeter system that uses an advanced algorithm, potentially incorporating Artificial Intelligence (AI), to enhance the accuracy and efficiency of visual field testing.

2. Objectives

   • To collect normal visual field threshold values in a retrospective chart review, then test the developed analyzer software in a prospective study using healthy individuals.
   • To assess usability and comfort of the visual field perimeter device.
   • To support optimization of the perimeter algorithm, including AI-driven test point selection.
3. Study Design Part one involves a brief retrospective chart review to gather data to build an AI model differentiating between healthy and glaucomatous visual fields. Part two is a prospective, single-site observational study involving 100 healthy participants. Each participant will complete a single visual field test using a virtual reality-based perimeter.

4. Participant Selection Criteria

   Inclusion Criteria:

   • Healthy adults aged 18 years or older.
   • Best corrected visual acuity of 20/40 or better in each eye.
   • Normal optic nerve appearance upon clinical examination.

   Exclusion Criteria:

   • Best corrected visual acuity worse than 20/40.
   • Cup-to-disc ratio greater than 0.5.
   • Previously documented glaucoma or optic neuropathy.
   • Any significant ocular or neurological condition that may impact visual field.
   • Inability to comply with study procedures.

5. Recruitment and Consent Participants will be ethically recruited from Dr. Chay's established patient base at Schefkind Eye Care, following the recruitment procedures described in a separate IRB-approved document. Dr. Chay will not directly approach his patients to minimize any potential for coercion.

   Upon arrival at the study site, participants will receive a brief introduction to the study. Written informed consent will be obtained by a member of the research team not involved in clinical care. A copy of the signed consent form will be provided to the participant.

6. Study Procedures

   • A de-identified database of patients previously seen at Schefkind Eye Care will be split into healthy and glaucomatous groups by single-blinded physician review. The visual field test outputs will be used to train an AI model to perform the same splitting function.
   • In the prospective portion of the study, informed consent is obtained, participants will be fitted with the virtual reality headset that runs the AI model.
   • The headset may be adjusted by the test administrator for comfort and visual alignment.
   • Instructions for the visual field test will be displayed within the device in the participant's preferred language.
   • The participant will complete the visual field test while the administrator remains in an adjacent room and available at all times to respond to any questions or concerns.
   • After the test, participants will receive a verbal debrief and be asked to complete a brief exit survey evaluating their experience.
7. Sample Size A total of 100 participants will be enrolled. This number is sufficient to establish a normative dataset for healthy eyes, allowing for future comparison to pathological cases.

8. Data Analysis Methods Data collected from the visual field tests will include threshold sensitivity values at various visual field points. The dataset will be analyzed using descriptive statistics (mean, standard deviation, range) to determine normal threshold ranges across test locations.

   Additional analysis may include:

   • Stratification by age group and gender to identify demographic influences.
   • Outlier detection to ensure data quality.
   • Internal consistency analysis of test-retest reliability if applicable. All analyses will be performed using statistical software such as R or Python. De-identified data may be used in the future for algorithm training or model development.
9. Timeline Phase Activity Duration Dates Phase 1 IRB approval and study preparation 1 month Completed Phase 2 Initial retrospective data analysis + Participant recruitment and enrollment 1 month [January-April 2026] Phase 3 Data collection and visual field testing 1 months (overlapping) [April-May 2026] Phase 4 Data analysis and reporting 1-2 months [June 2026] Phase 5 Final reporting and manuscript preparation 1 month [July 2026] The total anticipated duration of the study is 4-5 months.
10. Data Management and Confidentiality All study data will be stored in a secure, password-protected electronic database. Each participant will be assigned a unique study ID to de-identify personal information. Only authorized study personnel will have access to the data. Data will be handled in accordance with HIPAA and institutional privacy regulations.

11. Risks and Benefits

    Risks:

    • Minimal: potential for temporary eye fatigue or mild discomfort from the visual field test or wearing the headset.

    Benefits:

    • No direct benefit to participants.
    • The study contributes to the development of improved diagnostic tools and may benefit future patients through more accurate visual field testing.
12. Compensation Participants will not receive financial compensation for participation.
13. Voluntary Participation Participation in the study is entirely voluntary. Participants may withdraw at any time without any penalty or effect on their clinical care.
14. Funding Disclosure This study is self-funded by the Principal Investigator, Dr. Edward Chay. No external funding sources or commercial sponsors are involved.

• Study Type: Observational
• Enrollment (Estimated): 100

Contacts and Locations

Study Locations

• United States
  • Virginia
    • Alexandria, Virginia, United States, 22306
      • Sight Intelligence Engineering

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: Yes

• Sampling Method: Probability Sample

Study Population

Healthy individuals with healthy eyes. The participants will be of all backgrounds so that the test results can be generalized to all individuals.

Description

Inclusion Criteria:

• Healthy adults aged 18 years or older.
• Best corrected visual acuity of 20/40 or better in each eye.
• Normal optic nerve appearance upon clinical examination.

Exclusion Criteria:

• Best corrected visual acuity worse than 20/40.
• Cup-to-disc ratio greater than 0.5.
• Previously documented glaucoma or optic neuropathy.
• Any significant ocular or neurological condition that may impact visual field.
• Inability to comply with study procedures.

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort

Intervention / Treatment

Healthy; Healthy adults aged 18 years or older.; Best corrected visual acuity of 20/40 or better in each eye.; Normal optic nerve appearance upon clinical examination.

Device: Visual Field Perimeter Optimized with Eye Gaze Capture and Artificial Intelligence; Natural Eye Movement To the best of our knowledge, this is the first visual field perimeter software that allows users to move their eyes naturally during the test. Previous visual field tests required that patients maintain a central gaze throughout the test as test points flashed in the periphery of their vision; our test allows patients to look directly at these test points.; Simplified Data Capture To the best of our knowledge, this is the first visual field perimeter software that reliably eliminates the need for a hand-held clicker to register test points as the user sees them.; Attention Monitoring In previous tests, staring at a central spot could induce sleepiness and inattention; our test employs a software monitor that pauses the test, gives encouragement when appropriate, and allows the patient to regain focus. This allows for far greater accuracy in data reporting.; Artificial Intelligence (AI) Our test uses AI to optimize the test parameters.; Other Names: Advanced Visual Field Perimeter; Visual Field Analyzer Software

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Brightness Threshold	At each position of the peripheral visual field, a healthy individual's ability to see a test point will be measured. The brightness (measured in apostilbs) along a logarithmic scale (0.1 dB to 1000 dB) will be adjusted and the threshold will be defined as a brightness at which the healthy individual can see that test point > 50% of the time.	Within a 10 minute test
Duration Threshold	At each position of the peripheral visual field, a healthy individual's ability to see a test point will be measured. The duration (measured in seconds) will be adjusted and the threshold will be defined as the time at which the healthy individual can see that test point > 50% of the time.	Within a 10 minute test

Collaborators and Investigators

• Sponsor: Sight Intelligence Engineering Corporation

Study record dates

Study Major Dates

• Study Start (Actual): July 1, 2025
• Primary Completion (Estimated): August 31, 2026
• Study Completion (Estimated): August 31, 2026

Study Registration Dates

• First Submitted: March 27, 2025
• First Submitted That Met QC Criteria: April 2, 2025
• First Posted (Actual): April 9, 2025

Study Record Updates

• Last Update Posted (Estimated): November 3, 2025
• Last Update Submitted That Met QC Criteria: October 30, 2025
• Last Verified: October 1, 2025

More Information

Terms related to this study

• Keywords: Virtual Reality; Artificial Intelligence; Glaucoma; Perimetry; Visual field defect; Visual field test; Threshold Perimetry
• Additional Relevant MeSH Terms: Eye Diseases; Ocular Hypertension; Glaucoma
• Other Study ID Numbers: WCG-20251396

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: Yes
• product manufactured in and exported from the U.S.: No