Clinical Research Directory

Inclusion Criteria: * Older adults willing to participate in the study * Being 60 years of age or older * Not having been diagnosed with Parkinson's disease or a psychiatric disorder, not having cognitive impairment, and being able to communicate * Absence of a sleep apnea diagnosis * Scoring 24 or higher on the Standardized Mini Mental Test * The participant stated that her average nightly sleep duration is less than 5 hours * Avoid using medications that may affect sleep (acetylcholinesterase inhibitors, beta-blockers, diuretics, phenytoin, theophylline, benzodiazepines, etc.) * Hospital stay must be at least 3 days * Avoid smoking in the last 15 minutes before a session and avoid using caffeine stimulants (tea/coffee/chocolate/cola etc.) exceeding 1.4 mg/kg in the 10 hours prior. * Lack of photosensitivity * Eye disease and absence of contact lenses Exclusion Criteria: * Those unwilling to participate in the study * Those who are not 60 years of age or older * Patients diagnosed with Parkinson's disease and psychiatric disorders, who have cognitive impairment and are unable to communicate * Having a diagnosis of sleep apnea * Those who score below 24 on the Standardized Mini Mental Test * Those who stated that their average nightly sleep duration is more than 5 hours * Those who use medication (acetylcholinesterase inhibitor, beta blocker, diuretic, phenytoin, theophylline, benzodiazepine etc.) that can affect sleep * Hospital stay of 3 days or less * Smoking a cigarette in the last 15 minutes before a session and using caffeine stimulants (tea/coffee/chocolate/cola etc.) above 1.4 mg/kg 10 hours prior * Having photosensitivity * Older adults with eye disease and contact lenses