Health TrialsbyHealthPanel

Effect of Colour Temperature of Reading Lamp on Refractive Error Development

ConditionRefractive Errors
Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age4-18
SponsorThe Hong Kong Polytechnic University

About this trial

This is a 12-month longitudinal randomized controlled trial aiming to evaluate the effect of colour temperature of reading lamp on refractive error development.

Eligibility criteria

This trial accepts healthy volunteers

Qualifiers

aged between 4 and 18 years

Disqualifiers

have received myopia control intervention

Trial design

Design model

Parallel

Treatments tested in this trial

  • 3000K Reading lamp

    Device

    Reading lamp with custom-made circuitry to emit light of 3000K colour temperature

  • 4500K Reading lamp

    Device

    Reading lamp with custom-made circuitry to emit light of 4500K colour temperature

  • 6500K Reading lamp

    Device

    Reading lamp with custom-made circuitry to emit light of 6500K colour temperature

Treatment groups

798 Participants
are divided into 3 treatment groups
Group A: 3000KActive comparator 1 intervention
Group B: 4500KActive comparator 1 intervention
Group C: 6500KActive comparator 1 intervention

Trial outcomes

Primary outcomes

1

Cycloplegic refraction

Refractive error in diopter by autorefractor

Time frame
up to 12 months
2

Axial length

Length of the eyeball in millimeter by partial coherence interferometer

Time frame
up to 12 months

Secondary outcomes

1

Colour vision

Ability to distinguish colours (pass/fail \& severity of defect) measured by pseudoisochromatic plates

Time frame
up to 12 months

Other outcomes

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

The Hong Kong Polytechnic University

Lead sponsor

Source ClinicalTrials.gov
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