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Effect of Green Light Exposure at Different Times on the Pain of Subjects

StatusCompleted
PhaseNot applicable
Started
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Record History

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  1. Primary endpoint(s) modified Show 8 more changesShow less
    • Completed without a posted recruiting period
    • Final enrollment: 140 participants (planned 120)
    • Primary completion date changed from estimate of Oct 19, 2025 to Apr 4, 2026
    • Interventions modified
    • Study completion date changed from estimate of Oct 19, 2025 to Apr 6, 2026
    • Secondary endpoints: details revised at 2 of 4 entries
    • Eligibility criteria expanded, about 4 words
    • Study description shortened, about 5 words
  2. Secondary endpoints: details revised at 4 of 4 entries
    • Study title shortened, about 6 words
    v2
  3. Study First Submitted
  • Stopped: an ongoing trial was terminated, suspended or withdrawn.
  • Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
  • Minor: routine progress and housekeeping, such as sites added or enrollment closed.
This study investigated the effects of green-light exposure on pain sensitivity in healthy volunteers and on perioperative pain in surgical patients. Healthy volunteers underwent 30-min green-light exposure at three different times of day (08:00-09:00, 12:00-13:00, and 16:00-17:00) on separate days using a within-subject design, with a washout period of at least 2 days between sessions. Surgical patients undergoing elective surgery under general anesthesia with preoperative arterial puncture were randomly assigned in a 1:1 ratio to either a green-light intervention group or a sham-device control group. The assigned intervention was initiated before arterial puncture and continued throughout surgery. The effects of green-light exposure on pain sensitivity, procedural pain, and perioperative pain were evaluated.
Trial Details
NCT Number NCT07033949
Lead Sponsor The Second Affiliated Hospital of Chongqing Medical University
Conditions
(from sponsor)		 Pain
Related terms Acute Pain, Pain
Enrollment 140 participants
Start Date
Primary Completion (estimated)
Study Completion (estimated)
Updated on ClinicalTrials.gov