Currently, optical and pharmacological interventions have been developed to prevent the progression of childhood myopia. However, no myopia control strategy has been shown to have complete efficacy in controlling myopia progression in children. One possible reason is that risk factors contributing to the development of myopia were not controlled in previous clinical studies including time outdoors and near vision behaviour. This study aims to quantify time spent outdoors and near vision behavior in myopic children and its impact on myopia control efficacy. The outcomes of this study will guide clinicians on risk management and improve responses to existing treatments for progressive myopia.
Study Type
OBSERVATIONAL
Enrollment
230
The Vivior is a wearable clip-on sensor that objectively quantifies near viewing distance and duration, and ambient illumination. The Vivior will be attached to the spectacles frame of children undergoing myopia control treatment.
School of Optometry, University of California, Berkeley
Berkeley, California, United States
ACTIVE_NOT_RECRUITINGNew England College of Optometry
Boston, Massachusetts, United States
RECRUITINGState University of New York (SUNY), College of Optometry
New York, New York, United States
NOT_YET_RECRUITINGSchool of Optometry and Vision Science, UNSW
Sydney, New South Wales, Australia
RECRUITINGOptometry and Vision Science, Queensland University of Technology
Kelvin Grove, Queensland, Australia
RECRUITINGNear viewing duration
Duration during near tasks
Time frame: 12 months
Near viewing distance
Distance during near tasks
Time frame: 12 months
Outdoor time
Ambient illumination to determine time spent outdoors
Time frame: 12 months
Objective cycloplegic central refraction
Change in objective refraction to measure myopia progression
Time frame: 12 months
Axial length
Change in axial length to measure myopia progression
Time frame: 12 months
Subjective cycloplegic central refraction
Change in subjective refraction to measure myopia progression
Time frame: 12 months
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