Color and Pupil Function

Not Applicable

Completed

• Conditions: Pupil
• Interventions: Other: Light

• Registration Number: NCT02636140
• Lead Sponsor: VA Palo Alto Health Care System

Brief Summary

This study will examine the effects of different colors of light on pupil function and alertness.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2015-12-17
• Study First Submitted QC: 2015-12-18
• Study First Posted: 2015-12-21
• Study Start: 2016-02
• Primary Completion: 2016-08
• Study Completion: 2016-08
• Status Verified: 2016-11
• Last Update Submitted: 2016-11-01
• Last Update Posted: 2016-11-02

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 10

Inclusion Criteria

• Aged 18-35
• Good health

Exclusion Criteria

• Sleep disorder
• Extreme chronotype
• Smoker
• Abnormal color vision
• Ocular pathology (other than mild or moderate refractive error)
• Visual field defects
• Alcohol abuse
• Use of illegal drugs

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Light	Light	Randomized amount and color of light

Primary Outcome Measures

Name	Time	Method
Change in pupil size	Baseline and 10 minutes	Change in pupil size from baseline during and following brief light exposure