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Study in Young Adults to Understand How Glasses With a Small Reading Addition Affect Focusing and Eye Coordination During Vision Tasks
Sponsor: Essilor International
Summary
This clinical study aims to understand how glasses with a small reading addition affect the way the eyes focus and work together in young adults with normal near vision. Some people experience focusing difficulties or visual discomfort during near-vision activities such as reading or using digital devices. This study will evaluate whether glasses with a small reading addition can help reduce these difficulties and improve visual comfort. Researchers will compare two different pairs of glasses designed to provide additional support for near vision. They will assess how each pair affects eye focusing and eye coordination using standard optometric examinations. Participants will: * Wear three pairs of glasses, each for approximately 4 weeks. * Complete eye examinations to evaluate focusing ability and eye coordination. * Answer questionnaires about visual comfort, eye strain, and overall quality of vision.
Official title: Impact of a Small Power Addition Lens on the Accommodative and Binocular Profiles
Key Details
Gender
All
Age Range
18 Years - 35 Years
Study Type
INTERVENTIONAL
Enrollment
96
Start Date
2026-09
Completion Date
2027-08
Last Updated
2026-10-06
Healthy Volunteers
Yes
Interventions
Eye exam
An optometric eye exam
Questionnaires
Questionnaires on the eye fatigue and the quality of vision
Washout lenses
Standard single-vision spectacle lenses prescribed according to each participant's refractive error and worn during the washout period before allocation to the study lenses.
Reference lenses
Spectacles lenses optimized near vision lenses for the comparator
Test lenses
Spectacles lenses optimized near vision lenses for the test
Locations (1)
City St Georges's, University of London
London, United Kingdom