Validation of an Inexpensive Test Illuminant for Aeromedical Color Vision Screening

Milburn, Nelda J.; Mertens, Henry W.; Civil Aeromedical Institute

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Validation of an Inexpensive Test Illuminant for Aeromedical Color Vision Screening

1993-09-01
By Milburn, Nelda J. ; Mertens, Henry W.

[PDF-902.98 KB]

English

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Details:

Creators:

Milburn, Nelda J. ; Mertens, Henry W.

Milburn, Nelda J. ; Mertens, Henry W. Less -
Corporate Creators:

Civil Aeromedical Institute
Corporate Contributors:

United States. Office of Aviation Medicine
Subject/TRT Terms:

[+]

Air Pilots Air Pilots--Certification Certification Color Blindness Color Vision Color Vision--Testing--Validity Daylight Human Subject Testing Lighting Validation Vision Tests
Publication/ Report Number:

DOT/FAA/AM-93/16
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Civil Aerospace Medical Institute
Abstract:

An inexpensive illuminant for color vision screening suggested by the NRC-NAS Committee on Vision was evaluated as a substitute for the Macbeth Easel Lamp. The Macbeth Easel Lamp is the recommended illuminant for pseudoisochromatic plate tests used in aeromedical color vision screening, but is no longer in production. Subjects included both normal trichromats (p=145) and persons with varying degrees and types of color vision deficiencies (p=152) as diagnosed with the Nagel Type I anomaloscope.

Subjects were given the Dvorine Pseudo-lsochromatic Plate Test illuminated by each of the two light sources. One Verilux True Color Light tube (F15T8VLX) was installed in an adjustable fluorescent desk lamp and position at a height of 24 in above the center of the Dvorine test book to give a 270 lux illumination to match the illumination produced by the Macbeth light source. The two presentations of the Dvorine were separated by several other color vision tests. Each subject was given a different random order of plates 2-15 for each light source. Pass/Fail performance with the Dvorine test was virtually the same with the two light sources when criterion for failure was 3 or more errors. The Verilux True Color Light obtained a Kappa value of .97, and very low false positive (.021) and false negative (.006) rates when compared to the Macbeth Easel Lamp. Performance and possible applications of the Verilux True Color Light in aeromedical color vision screening are discussed.
Format:

PDF
Collection(s):

FAA Civil Aerospace Medical Institute US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:2fc49b1965277e0181d3908c7d036abd39766214155e8333a02f681430550d2a
Download URL:

https://rosap.ntl.bts.gov/view/dot/21376/dot_21376_DS1.pdf
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Validation of an Inexpensive Test Illuminant for Aeromedical Color Vision Screening

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