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

Completed

Conditions studied: Color Blindness, Acquired

In brief

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.

Key facts

Study ID

NCT01927536

Run by

University of Colorado, Denver

People needed

39

Starts

2013-04-23

Expected to finish

2019-01-10

Last updated by the study team

2019-05-15

Who can join

Age: 18 and older, up to 66. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• normal vision
• 18-65 years

You may not qualify if…

• blindness
• colorblind
• pregnant women
• prisoners
• decisionally challenged

Where it is running

• University of Colorado Dept of Opthalmology — Aurora, Colorado, United States

Full record on ClinicalTrials.gov

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