Impact of Sex and Age on Non-visual Light Input That Affects Sleep and Circadian Rhythms
NCT05829044
This study is recruiting at 1 US site in 1 state, according to its ClinicalTrials.gov record last updated .
Summary
The goal of this clinical trial is to learn how the pupil responds to different light stimuli and how that relates to sleep and daily rhythms in healthy people of different ages. The main questions it aims to answer are: Does the eye's pupil response to light stimuli differ by the sex and age of the participant? Is the eye's pupil response to light stimuli related to each participant's sleep timing, their body clock timing, and their hormone responses to light. Participants will have a special eye exam and complete questionnaires before starting the study to see if they can participate.
Shortened from the sponsor's brief summary. View official record on ClinicalTrials.gov
Conditions studied
- Normal Physiology
Eligibility basics and study details
- Study type
- Interventional
- Phase
- Not applicable
- Ages
- 18 to 85 years
- Sex
- All
- Healthy volunteers
- Accepted
- Sponsor
- Massachusetts General Hospital
- Last updated on ClinicalTrials.gov
- July 13, 2026
These are the basic criteria only. The full inclusion and exclusion criteria are on the official record, and the study team decides who can take part.
US recruiting sites
Massachusetts · 1
- Massachusetts General Hospital · Boston, MA
Source: ClinicalTrials.gov, data processed . Recruiting US sites filtered by distance and site status; summaries shortened.