Study: NCT03304587

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Bright blue-green light
Description: -The cap visor-mounted device controls the distance of the light exposure, and positions the light source above eye level to target on the lower retina for better effect

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Dim red light
Description: -The cap visor-mounted device controls the distance of the light exposure, and positions the light source above eye level to target on the lower retina for better effect

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Digital foot candle datalogging light meter
Description: On 2 random days during the 2-week bright light treatment, ambient light will be recorded continuously during waking hours using a digital foot candle datalogging light meter (Extech Instruments, Waltham, MA) Model SDL400. The 7.1 x 2.9 x 1.0 light meter (12.21 oz) has the capacity to measure up to 10,000 footcandles (accuracy: ± 4% reading). The light-weight light sensor is approximately 2 inches in diameter and comes with a clip and strap that makes it comfortable to wear just below the neck.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: Digital foot candle datalogging light meter
Description: On 2 random days during the 2-week bright light treatment, ambient light will be recorded continuously during waking hours using a digital foot candle datalogging light meter (Extech Instruments, Waltham, MA) Model SDL400. The 7.1 x 2.9 x 1.0 light meter (12.21 oz) has the capacity to measure up to 10,000 footcandles (accuracy: ± 4% reading). The light-weight light sensor is approximately 2 inches in diameter and comes with a clip and strap that makes it comfortable to wear just below the neck.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Patient-Reported Outcomes Measurement Information System (PROMIS)-Cancer-Fatigue
Description: 8 items with a 5-point rating scale (1=not at all to 5 =very much) measuring fatigue experience and fatigue impact. Higher scores indicate worse fatigue. PROMIS-Fatigue was developed based on rigorous methodologies. The psychometric properties have been established across chronic illnesses including cancer.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Patient-Reported Outcomes Measurement Information System (PROMIS)-Cancer-Fatigue
Description: 8 items with a 5-point rating scale (1=not at all to 5 =very much) measuring fatigue experience and fatigue impact. Higher scores indicate worse fatigue. PROMIS-Fatigue was developed based on rigorous methodologies. The psychometric properties have been established across chronic illnesses including cancer.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Patient-Reported Outcomes Measurement Information System (PROMIS)-Sleep Disturbance
Description: 8 items with 5-point rating scales measuring overall sleep and sleep-related impairments. Higher scores indicate worse sleep disturbances. Validity was supported by moderate to high correlations with the existing scales, e.g. PSQI, Epworth Sleepiness Scale (ESS). The scores significantly differed participants with and without sleep disorders.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Patient-Reported Outcomes Measurement Information System (PROMIS)-Sleep Disturbance
Description: 8 items with 5-point rating scales measuring overall sleep and sleep-related impairments. Higher scores indicate worse sleep disturbances. Validity was supported by moderate to high correlations with the existing scales, e.g. PSQI, Epworth Sleepiness Scale (ESS). The scores significantly differed participants with and without sleep disorders.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Patient-Reported Outcomes Measurement Information System (PROMIS)-Depression
Description: 8 items with 5-point rating scales (1=never to 5=always) measuring affective and cognitive manifestations of depressive mood. Higher scores indicate worse depression. In a sample of depressed outpatients, PROMIS-Depression showed greater reliability when compared to the CES-D and the Patient Health Questionnaire (PHQ-9). Convergent validity with the CES-D and PHQ-9 was supported by strong correlations, ranged 0.72 to 0.84