Myopia
Conditions
Keywords
eye gaze, lens gaze, head movement, myopia control
Brief summary
The goal of this clinical trial is to learn how children with myopia aged 8 to 15 years move their eyes and heads during near-vision tasks while wearing different spectacle lenses, and if wearing myopia control spectacle lenses for one month is related to change in eye length (axial length). The main questions it aims to answer are: 1. How do eye gaze position and head movement patterns change when children wear the commercially available myopia control spectacle lenses compared with single-vision spectacle lenses? 2. Does wearing myopia control spectacle lenses for one month lead to short-term changes in axial length? This study compares commercially available myopia control spectacle lenses with single-vision spectacle lenses to evaluate differences in eye gaze position, head movement patterns, and axial length. Participants will: * Attend three study visits at the Singapore Polytechnic Optometry Centre. * Wear the assigned study spectacles while performing near-vision tasks. * Have video recordings of their face collected, to evaluate eye and head movements, during the near-vision tasks.
Interventions
DEVICESingle Vision Lens (SVL)
Standard, commercially available single vision spectacle lenses worn on-site during near vision task assessment at Visit 2 and Visit 3.
DEVICEMyopia Control Lens (MCL)
Commercially available Stellest® spectacle lenses worn on-site during near vision task assessment at Visit 2 and Visit 3, and worn continuously for approximately 1 month between Visit 2 and Visit 3.
Sponsors
Essilor International
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
8 Years to 15 Years
Healthy volunteers
No
Inclusion criteria
* Between 8 and 15 years of age * No amblyopia * No tropia * No known/reported ocular pathology * Myopes with spherical equivalent refraction of -0.50 D to -6.00 D * Astigmatism of less than -4.00 D * Anisometropia of less than -1.50D * Best corrected monocular VA better than 0.10 logMAR in both eyes * Able to follow the protocol * Wearing habitual correction
Exclusion criteria
* Currently or previously on any myopia control interventions (I.e., Myopia control spectacle lenses, myopia control contact lenses, orthokeratology lenses or atropine, etc.) * Myopes who do not have a pair of habitual glasses
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in eye gaze position | Visit 1 (Baseline), Visit 2 (1-2 weeks), Visit 3 (1-month) | Eye gaze positions are derived from post-processed video recordings of participants performing near-vision tasks while wearing the study spectacles. |
| Change in axial length | Visit 2 (Baseline), Visit 3 (1-month) | — |
Countries
Singapore
Contacts
PRINCIPAL_INVESTIGATORDanny Sim
Singapore Polytechnic
Outcome results
None listed