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Evaluating How Well Different Types of Light-sensitive Cells in the Eye Contribute to Its Focusing Ability
Sponsor: Rochester Institute of Technology
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.
Official title: A Randomized, Repeated-measures Study to Evaluate the Contributions of Different Cone Photoreceptor Classes to a Step Ocular Accommodation Task
Key Details
Gender
All
Age Range
Any - 35 Years
Study Type
INTERVENTIONAL
Enrollment
20
Start Date
2026-07-02
Completion Date
2026-12-15
Last Updated
2026-07-17
Healthy Volunteers
Yes
Conditions
Interventions
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.
Locations (1)
Chester F. Carlson Center for Imaging Science
Rochester, New York, United States