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Evaluating How Well Different Types of Light-sensitive Cells in the Eye Contribute to Its Focusing Ability

NCT07691463 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 20

Last updated 2026-07-17

No results posted yet for this study

Summary

In this experiment, subjects will view shapes on a screen with varying colors and be asked to focus their eyes on the shapes. The shapes will look as though they are jumping to random distances away from the eye. As the subjects focus their eyes on the shapes, the investigators will measure the focus of their eyes using a device called a wavefront sensor. This device uses infrared light to measure the optical properties of the eye in real time. Our goal is to find out how well the eye focuses on different colors. Our broad goal is to better understand how the eye focuses because that process is a major part of having clear and good vision.

Conditions

  • Monochromatic
  • L- and S-cone Modulation Only
  • L- and M-cone Modulation Only
  • M and S-cone Modulation Only

Interventions

OTHER

Color

Each intervention involves showing a participant a stimulus with a particular color on a screen display, and asking the participant to focus their eyes on the stimulus. The 4 colors are: 1) grayscale (L, M, and S-cone modulation), 2) L and S cone modulation only, 3) L and M cone modulation only, and 4) M and S cone modulation only.

Sponsors & Collaborators

  • National Eye Institute (NEI)

    collaborator NIH

  • Rochester Institute of Technology

    lead OTHER

Study Design

Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Max Age
35 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-07-02
Primary Completion
2026-12-15
Completion
2026-12-15

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07691463 on ClinicalTrials.gov