Clinical trial Recruiting at 1 site Interventional Ages 4 to 18

Impact of reading lamp color temperature on myopia development in children

Official title: Effect of Colour Temperature of Reading Lamp on Refractive Error Development

Run by The Hong Kong Polytechnic University · NCT05733182 · Data updated 2026-11-12

This study is testing whether different colors of reading lamps can affect the development of nearsightedness in children aged 4 to 18 over a year.

More Refractive Errors trials

Quick facts

Study typeInterventional
Ages4 Years to 18 Years
SexAll
Enrollment798 (estimated)
SponsorThe Hong Kong Polytechnic University
Academic / other
Locations1 site (Hong Kong, Kowloon)
StatusRecruiting
StartedJuly 1, 2022
Main results expectedJune 30, 2025
Study endsJune 30, 2027
Registry record updatedMarch 1, 2024
Trial IDNCT05733182 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are school-aged children between 4 and 18 years old who have not received any prior myopia control interventions.

Probably not a fit

Patients who have already undergone myopia control interventions may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This longitudinal randomized controlled trial aims to assess how different color temperatures of reading lamps affect the development of refractive errors, particularly myopia, in school-aged children over a 12-month period. Participants aged 4 to 18 will be randomly assigned to use reading lamps with color temperatures of 3000K, 4500K, or 6500K. The study will measure changes in refractive error and axial length to determine the impact of lighting conditions on myopia progression.

Why it matters

Potential benefit: If successful, this study could provide insights into effective lighting strategies to mitigate the development of myopia in children.

How similar studies have gone: While the relationship between lighting and myopia is being explored, this specific approach to evaluating color temperature effects is relatively novel and has not been extensively tested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* aged between 4 and 18 years

Exclusion Criteria:

* have received myopia control intervention

Where it's running

  • Optometry Research Clinic
    Hong Kong, Kowloon, Hong Kong
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.