U.S., April 30 -- ClinicalTrials.gov registry received information related to the study (NCT06949644) titled 'Pupillometry in Delayed Sleep Wake Phase Disorder' on April 22.
Brief Summary: The goal of this observational study is to characterize the pupil light response in patients with delayed sleep-wake phase disorder. A subset of participants will take part in a clinical trial to determine if increasing serotonin can alter the circadian response to light. The main questions it aims to answer is:
Are there differences in the light response in patients with delayed sleep-wake phase disorder? Does citalopram increase melatonin suppression in patients with delayed sleep-wake phase disorder?
Participants will complete activity and melatonin...