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Evaluating Color Perception Under LED Red/Green and Green Dominant Light

Sponsor
University of Colorado, Denver (Other)
Overall Status
Completed
CT.gov ID
NCT01927536
Collaborator
(none)
39
Enrollment
1
Location
68.6
Actual Duration (Months)
0.6
Patients Per Site Per Month

Study Details

Study Description

Brief Summary

The investigators are testing a Light-emitting Diode (LED) flashlight from First-Light™ USA called the Tomahawk MC Tactical Light to determine the range of colors people are able to see with these flashlights at night. The flashlight has been designed to reduce visibility of the user and uses a combination of green and red LED lamps to achieve this. In this study investigators wish to determine how well a subject can differentiate colors at night in a quantifiable manner. Investigators will use the Farnsworth Munsell 100 hue test which requires the user to put shades of red, green, blue and yellow into progressive color order which is scored according to the manufactures specifications.

Condition or Disease Intervention/Treatment Phase
  • Device: White LED Flashlight
  • Device: Red/Green Green Dominant LED Flashlight

Study Design

Study Type:
Observational
Actual Enrollment :
39 participants
Observational Model:
Cohort
Time Perspective:
Prospective
Official Title:
Evaluating Color Perception Under LED Red/Green and Green Dominant Light
Actual Study Start Date :
Apr 23, 2013
Actual Primary Completion Date :
Jan 10, 2019
Actual Study Completion Date :
Jan 10, 2019

Arms and Interventions

Arm Intervention/Treatment
Night Vision

White LED Flashlight, Red/Green Green Dominant LED Flashlight

Device: White LED Flashlight
white light setting
Other Names:
  • Tomahawk serial number TMC12420

    • Device: Red/Green Green Dominant LED Flashlight
    Green LED light dominant setting
    Other Names:
  • Tomahawk serial number TMC12420, green dominant setting

    		•

    Outcome Measures

    Primary Outcome Measures

    1. Change in Normal Color vision [1 hr]

      The Farnsworth Munsell 100 Hue Test is used to determine normal color vision and vision using the red green Tomahawk LED flashlight.

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years to 66 Years
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    Yes
    Inclusion Criteria:

    • normal vision

    • 18-65 years

    Exclusion Criteria:

    • blindness

    • colorblind

    • pregnant women

    • prisoners

    • decisionally challenged

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 University of Colorado Dept of Opthalmology Aurora Colorado United States 80045

    Sponsors and Collaborators

    • University of Colorado, Denver

    Investigators

    • Principal Investigator: Mark Petrash, PhD, University of Colorado, Denver

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    None provided.
    Responsible Party:
    University of Colorado, Denver
    ClinicalTrials.gov Identifier:
    NCT01927536
    Other Study ID Numbers:
    • 13-0387
    First Posted:
    Aug 22, 2013
    Last Update Posted:
    May 15, 2019
    Last Verified:
    May 1, 2019
    Additional relevant MeSH terms:
    Blindness
    Color Vision Defects

    Study Results

    No Results Posted as of May 15, 2019