Human Factors & Aviation Medicine
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چکیده
Approximately eight percent of human males (and a fraction of one percent of females) in a given population of aircrew training applicants will have some degree of color insensitivity: that is, be unable to discriminate between certain shades of a color and white, or, between shades of colors, or even between certain colors. The insensitivity may range from mild to complete, and should not, in most cases, be referred to as color blindness. The term “color blind” is centuries old and actually refers to the most extreme insensitivities as revealed by mismatching some dyed threads while weaving a pair of kilts or performing some other domestic chore where a break with traditional color patterns is innocently made. The U.S. Federal Aviation Administration (FAA) recognizes that persons with color vision insensitivity can fly safely, and regularly issues waivers in individual cases. Figure 1 gives the numbers by medical certificate class as of early 1989.
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