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Clinical Trials in France / NCT07499180
Recruiting Not applicable

A Study on Body Posture and Eye Movements During Screen Usage on Adults Aged 18 to 65 Wearing Various Types of Eyeglasses

NCT07499180 · tracked via the Priya Life Science France tracker
Sponsor
Essilor International
Phase
Not applicable
Started
2026-04-07
Last updated
2026-04-13

Condition(s) studied

Healthy Adults

Investigational drug(s) / intervention(s)

Eye examBody posture and eye movements behaviour of digital device users

Eye exam: Participants will get an eye exam

Body posture and eye movements behaviour of digital device users: Measurement of the body posture and eye movements behaviour of digital device users while performing simple visual tasks with various types of lenses

Study summary

The goal of this clinical study is to evaluate how adults aged 18 to 65 move their bodies and eyes when they use screens, with various eyeglasses. The main questions it aims to answer are :

* How the behaviour between young and presbyopes is different while performing visual tasks on digital devices ?
* How the behaviour while performing visual tasks changes according to different types of eyeglasses ? Participants will be asked to take part in an eye exam and do simple visual tasks on digital devices.

Eligibility

Sex
ALL
Min age
18 Years
Max age
65 Years
Healthy volunteers
Accepted
Inclusion Criteria: * Distance refractive error (equivalent sphere) between -3D and +3D * Astigmatism inferior or equal to 1D * Anisometropia inferior or equal to 1.5D * Addition (for presbyopes) between 0.75D and 2.75D * Minimum corrected visual acuity : 8/10 * Stable binocular vision Exclusion Criteria: * Employee of Essilor, Luxottica, GrandVision and their subsidiaries * Aphakia, pseudophakia or ocular surgery * Reported systemic pathology that affects vision * Medical treatment or taking medications that affect vision * Severe ocular pathology declared, involving a loss of visual field as in glaucoma, a loss of acuity * Reported neurological deficit, including a history of seizure or sensorimotor coordination disorders, vestibular or cerebellar pathology * Binocular vision problems such as amblyopia, strabismus, or double vision * Vertebral or cervical troubles * Difficulty to move, vertigo, ocular migraine

Primary outcome measure(s)

  • Quantification of Gaze Lowering using an eye-tracker device — From enrollment to 3 months after enrollment
    Quantitative Assessment of eye movements in degree with an eye-tracker during visual tasks

Trial sites (1)

FacilityCityRegionStatus
Essilor International Paris France Recruiting

More Essilor International trials in France

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Visual and Postural Behavior in Myopic and Non-Myopic Teenagers Recruiting
Understanding How Young Adults Perceive Blurred Image Quality and Creating a Model Predicting Their Quality Ratings Starting soon
Study on the Effect of Filters on Discomfort Glare on Healthy Adults Starting soon
Essilor® Stellest® Lenses Multicentre European Study (SLOMES) Active, not recruiting

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Official registry record

This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.

View NCT07499180 on ClinicalTrials.gov ↗ ← All trials in France