Sleep to Activate Mood Promotion

Sleep to Activate Mood Promotion- Intervention

The investigators are aiming to examine the acceptability and feasibility of a portable bright light therapy instrument to improve sleep disturbance in a preventive intervention for depression. The investigators will conduct an intervention that trials the use of bright light glasses called "re-timers" as a preventive intervention in older adults with sleep disturbance and subsyndromal symptoms of depression.

Inclusion Criteria:

• 65 years of age or older
• 6 or greater on the Pittsburgh Sleep Quality Index
• A score of 5 to 9 on the Patient Health Questionnaire-9 Depression Scale

Exclusion Criteria:

• Active suicidal ideation
• Presence of mania or bipolar disorder
• Presence of an eye disease
• Prescription of a photosensitizing medication
• Having previously had eye surgery