Effect of Colour Temperature of Reading Lamp on Refractive Error Development
Trial Snapshot
- Phase
- Not Applicable
- Status
- Recruiting
- Enrollment
- 798
- Locations
- 1
- Primary Endpoint
- Axial length
Study Overview
Brief Summary
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.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Supportive Care
- Masking
- Double (Participant, Investigator)
Eligibility Criteria
- Ages
- 4 Years to 18 Years (Child, Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •aged between 4 and 18 years
Exclusion Criteria
- •have received myopia control intervention
Arms & Interventions
3000K
Participants will receive a reading lamp of colour temperature 3000K.
Intervention: 3000K Reading lamp (Device)
4500K
Participants will receive a reading lamp of colour temperature 4500K.
Intervention: 4500K Reading lamp (Device)
6500K
Participants will receive a reading lamp of colour temperature 6500K.
Intervention: 6500K Reading lamp (Device)
Outcomes
Primary Outcomes
Axial length
Time Frame: up to 12 months
Length of the eyeball in millimeter by partial coherence interferometer
Cycloplegic refraction
Time Frame: up to 12 months
Refractive error in diopter by autorefractor
Secondary Outcomes
- Colour vision(up to 12 months)
Investigators
Dr CHOI Kai Yip
Research Assistant Professor
The Hong Kong Polytechnic University