NCT05733182

Effect of Colour Temperature of Reading Lamp on Refractive Error Development

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 798 (estimated)
• Sponsor: The Hong Kong Polytechnic University · Academic / Other
• Sex: All
• Age: 4 Years – 18 Years
• Healthy volunteers: Accepted

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.

Conditions

• Refractive Errors

Interventions

Type	Name	Description
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

Timeline

• Start date: 2022-07-01
• Primary completion: 2025-06-30
• Completion: 2027-06-30
• First posted: 2023-02-17
• Last updated: 2024-03-01

Locations

1 site across 1 country: Hong Kong