Effect of Colour Temperature of Reading Lamp on Refractive Error Development
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: 3000K Reading lamp, 4500K Reading lamp, 6500K Reading lamp.
- Who it may be relevant to
- Registry conditions: Refractive Errors. Basic parameters: 4 years — 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Hong Kong
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Overview
This is a 12-month longitudinal randomized controlled trial aiming to evaluate the effect of colour temperature of reading lamp on refractive error development.
Detailed description
Myopia has reached epidemic in the world, especially in East Asia. The proportion of myopic population increases drastically during schoolage. Lack of light exposure has been suggested to be a risk for myopia development, in which additional reading lamp may alleviate this condition. However, the effect of colour temperature of the reading lamp is unknown on childhood refractive error development. In this study, investigators will randomly allocate school-aged children into groups, who will receive reading lamps of different colour temperatures for their daily use. The participants' refractive error and axial length will be evaluated.
Interventions
- Device 3000K Reading lamp
Reading lamp with custom-made circuitry to emit light of 3000K colour temperature - Device 4500K Reading lamp
Reading lamp with custom-made circuitry to emit light of 4500K colour temperature - Device 6500K Reading lamp
Reading lamp with custom-made circuitry to emit light of 6500K colour temperature
Primary outcome measures
- Cycloplegic refraction [Time frame: up to 12 months]
- Axial length [Time frame: up to 12 months]
Secondary outcome measures (1)
- Colour vision [Time frame: up to 12 months]
Eligibility criteria
Inclusion criteria
- aged between 4 and 18 years
Exclusion criteria
- have received myopia control intervention
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Double blind
- Primary purpose
- Supportive care
Study locations
Hong Kong · 1 center
- Optometry Research Clinic — Hong Kong
Identifiers
NCT: NCT05733182 · 00000