Color and Pupil Function

Pupil Clinical Trial

Official title:

Effect of Light Spectrum on Pupil Function

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02636140
• Other study ID #: IRB-36326
• Status: Completed
• Phase: N/A
• First received: December 17, 2015
• Last updated: November 1, 2016
• Start date: February 2016
• Est. completion date: August 2016

Study information

• Verified date: November 2016
• Source: VA Palo Alto Health Care System
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Federal GovernmentUnited States: Institutional Review Board
• Study type: Interventional

Clinical Trial Summary

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

Recruitment information / eligibility

• Status: Completed
• Enrollment: 10
• Est. completion date: August 2016
• Est. primary completion date: August 2016
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Both
• Age group: 18 Years to 35 Years

Eligibility

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

Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Basic Science

Related Conditions & MeSH terms

• Pupil

Intervention

Other:
• Light
A brief, 1 minute exposure to light of varying color and intensity. The combination of color and intensity will be the same in all participants, but the order in which they are received is randomized.

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
VA Palo Alto Health Care System

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change in pupil size	Change in pupil size from baseline during and following brief light exposure	Baseline and 10 minutes	No