Light exposure during general anesthesia

Is this trial a fit for you?

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

What this trial studies

Adults scheduled for general anesthesia are randomly assigned to either wear an eye shield (light-shielded) or not (non-shielded) during the procedure. Researchers will record induction drug dose and time, intraoperative anesthetic dosing, and emergence time to compare sedation depth and drug requirements between groups. The protocol excludes patients with blindness, photosensitivity, sleep or neurological disorders, pregnancy, severe organ dysfunction, substance abuse, or prior adverse anesthesia events. The trial is conducted at Peking University People's Hospital and uses a simple intervention (eye mask) to probe whether ambient light influences anesthesia through behavioral or physiological mechanisms.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* a. Age between 18 and 65 years, regardless of gender;
* b. ASA physical status I-II;
* c. 18.5 ≤ BMI ≤ 28;
* d. Signed written informed consent.

Exclusion Criteria:

* a. Blindness or history of photosensitivity disorders;
* b. Patients requiring medication for sleep, or with a history of sleep disorders;
* c. Presence of neurological diseases;
* d. Pregnancy;
* e. Severe hepatic or renal dysfunction;
* f. History of anesthetic drug abuse or alcohol abuse;
* g. History of adverse anesthesia events (difficult airway, allergy to anesthetic agents).

Where it's running

• Peking University People's Hospital
  Beijing, China Recruiting

Study contacts

• Study coordinator: Yi Feng, Ph.D
• Email: doctor_yifeng@sina.com
• Phone: 010-88325590

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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.