Visual and Postural Behavior in Myopic and Non-Myopic Teenagers

Sponsor
Essilor International
Study ID
NCT07440134
Status
Recruiting
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Conditions

  • Myopia
  • Teenagers

Eligibility Criteria

Sex
ALL
Age
12 Years - 17 Years
Healthy Volunteers
Accepted

Interventions

  • Ophtalmic measurements — DEVICE
    Participants will undergo a standard ophthalmic examination during the initial visit. All procedures are non-invasive, non-ionising, and conducted using devices routinely employed in clinical ophthalmic practice.
  • Visuo-postual measurements — BEHAVIORAL
    The behavioral part of the study consists of a set of tasks designed to assess eye movements and visual behavior in both controlled and ecological conditions. Participants perform everyday activities while eye movements and body motion are recorded using an eye tracker and motion capture systems.

Study Details

The goal of this observational study is to learn whether different types of eyeglasses prescription and different types of lenses change how close teenagers hold objects when looking at them up close. The study includes adolescents who are non-myopic and adolescents who are myopic and wear either single-vision lenses or lenses slowing down myopia progression. The main questions it aims to answer are: Do teenagers in these three groups use different average working distances (eye-to-object distance) during everyday tasks? Does wearing Essilor® Stellest® lenses change working distance compared with wearing single-vision lenses? Researchers will compare the three groups to see if their working distances differ. Participants will: Complete an initial optometric eye examination. Come for a second visit where they perform everyday activities while wearing a motion-capture system that measures how they move and how far they hold objects.

Key Dates

First listed
Feb 27, 2026
Start date
Apr 3, 2026
Status verified
Jan 2026
Primary completion
May 31, 2027
Completion
May 31, 2027

Study Design

Enrollment
100 participants (estimated)
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE

Arms

  • Experimental: non-myopic teenagers
  • Experimental: myopic teenagers wearing Essilor® Stellest® lenses
  • Experimental: myopic teenagers wearing single vision lenses
    Worn lenses do not have a myopia-control effect

Primary Outcome Measure

Working distance using motion capture system [ Time Frame: From enrollment to 3 months after enrollment ]

Central Contacts

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