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NCT05852782 · ClinicalTrials.gov registry record · NA
Effects of Light on the Choroid and Pupil
A NA study, sponsored by University of Houston.
- Completed
- Registry status
- NA
- Development phase
- 20
- Enrollment target
NCT05852782: Completed NA study, sponsored by University of Houston.
NCT05852782 is a NA study that has completed, run by University of Houston. The registered enrollment target is 20 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (99% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT05852782, a NA study, has completed, sponsored by University of Houston.
- COMPLETED
- Registry status
- NA
- Development phase
- 20 participants
- Enrollment target
Study Summary
Monochromatic light creates longitudinal chromatic aberration, with short wavelength blue light forming a focal point in front of the retina and long wavelength red light forming a focal point behind the retina. The investigators hypothesize that such chromatic aberrations, induced by exposure to red or blue LED lights, will cause the choroid behind the retina to respond to bring the image into focus by modulating its thickness, either thickening in the case of blue light or thinning in the case of red light. The magnitude and direction of this response is difficult to predict as previous studies have shown opposite findings in non-human primates and rodents. Furthermore, the investigators hypothesize that exposure to red or blue light will induce changes in how the pupil responds to light, because the cells in the eye that are involved in pupil control are most sensitive to blue light.
Primary Outcome
The choroid will be imaged with OCT to determine choroidal thickness
Interventions
- OTHER White Light therapy
- OTHER Blue light therapy
- OTHER Red light therapy
- OTHER Darkness
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 20 participants |
| Start Date | 2019-02-01 |
| Est. Completion | 2020-02-02 |
| Phase | NA |
What the finished NCT05852782 record still lists
NCT05852782 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 20 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (99% lower).
The record links to 0 conditions, and to 4 interventions - of which White Light therapy is the first listed.
NCT05852782 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT05852782 about?
NCT05852782 is a clinical study titled "Effects of Light on the Choroid and Pupil". Monochromatic light creates longitudinal chromatic aberration, with short wavelength blue light forming a focal point in front of the retina and long wavelength red light forming a focal point behind the retina. The investigators hypothesize that such chromatic aberrations, induced by exposure to re...
What is the current status of trial NCT05852782?
This trial is currently completed. It is a NA study. The enrollment target is 20 participants. The study started on 2019-02-01. Estimated completion is 2020-02-02.
What interventions are being tested in trial NCT05852782?
The interventions under investigation include: White Light therapy (OTHER), Blue light therapy (OTHER), Red light therapy (OTHER), Darkness (OTHER).
Who is sponsoring clinical trial NCT05852782?
This trial is sponsored by University of Houston, which has 64 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT05852782's enrollment target sits among peer trials
20 1768th of 2000 higher than 140 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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