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

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.

NCT Number	NCT07691463
Lead Sponsor	Rochester Institute of Technology Collaborators: National Eye Institute (NEI)
Conditions	Monochromatic, L- and S-cone Modulation Only, L- and M-cone Modulation Only, M and S-cone Modulation Only
Enrollment	20 participants
Start Date	2026-07-02
Primary Completion	2026-12-15 (estimated)
Study Completion	2026-12-15 (estimated)
Updated on ClinicalTrials.gov	2026-07-17