NCT02636140

Brief Summary

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

Trial Health

100
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
10

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Feb 2016

Shorter than P25 for not_applicable

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

December 17, 2015

Completed
4 days until next milestone

First Posted

Study publicly available on registry

December 21, 2015

Completed
1 month until next milestone

Study Start

First participant enrolled

February 1, 2016

Completed
6 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 1, 2016

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

August 1, 2016

Completed
Last Updated

November 2, 2016

Status Verified

November 1, 2016

Enrollment Period

6 months

First QC Date

December 17, 2015

Last Update Submit

November 1, 2016

Conditions

Pupil

Outcome Measures

Primary Outcomes (1)

  • Change in pupil size

    Change in pupil size from baseline during and following brief light exposure

    Baseline and 10 minutes

Study Arms (1)

Light

EXPERIMENTAL

Randomized amount and color of light

Other: Light

Interventions

LightOTHER

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.

Light

Eligibility Criteria

Age18 Years - 35 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Aged 18-35
  • Good health

You may not qualify if:

  • 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

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Interventions

Light

Intervention Hierarchy (Ancestors)

Electromagnetic RadiationElectromagnetic PhenomenaMagnetic PhenomenaPhysical PhenomenaOptical PhenomenaRadiationRadiation, Nonionizing

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Purpose
BASIC SCIENCE
Intervention Model
SINGLE GROUP
Sponsor Type
FED
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant Professor

Study Record Dates

First Submitted

December 17, 2015

First Posted

December 21, 2015

Study Start

February 1, 2016

Primary Completion

August 1, 2016

Study Completion

August 1, 2016

Last Updated

November 2, 2016

Record last verified: 2016-11