About this trial
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.
Eligibility criteria
Qualifiers
Volunteer adolescent, fluent in French, able to follow protocol and read and write
Aged between 12 and 17 years and 6 months
Adolescent with no history, according to the participant and/or their legal representatives, of any pathology, deficit, or disorder that could interfere with visual or cognitive functions.
If the subject wears glasses, they must have an ophthalmic prescription dated within the last year, certifying that a consultation was carried out during the previous year
Disqualifiers
Age ≤ 12 years
Age > 17 years and 6 months
Pregnant or breastfeeding women (Article L1121-5)
Persons (legal representatives or subjects) deprived of their liberty by a judicial or administrative decision and persons hospitalized without consent pursuant to Articles L. 3212-1 and L. 3213-1 who are not covered by the provisions of Article L. 1121-8 and persons admitted to a health or social care facility for purposes other than research
Trial design
Treatments tested in this trial
- Ophtalmic measurements
- Visuo-postual measurements