Can color vision defective subjects who pass the Farnsworth lantern test recognize surface color codes?
Barry L Cole, Ka-Yee Lian, Carol Lakkis
AVIATION SPACE AND ENVIRONMENTAL MEDICINE | AEROSPACE MEDICAL ASSOC | Published : 2007
INTRODUCTION: The International Civil Aviation Organization requires that pilots be able to distinguish the colors used in air navigation and in particular be able to identify the colors of signal lights. Most national aviation authorities use a lantern test to assess the ability of applicants for a pilot's license who have abnormal color vision to recognize the colors of signal lights. However, color-coding is now widely used in aviation systems other than signal lights. Color is used in tarmac markings, maps, manuals, and electronic flight instrument displays. These color codes can use 10 or more colors, many more than the 3 to 5 used for signal lights. This study investigated whether peop..View full abstract