What is Color Blindness? is intended for both lay people and medical doctors alike who want to gain a better understanding of what color blindness really is, its causes, the various diagnostic tests, and its implications for work and daily life. Color blindness is an often used catch all term for all degrees andd types of color vision defects, from minor issues to major deficiencies that pose severe difficulties in daily life. The book takes the reader through these differences and shows how they pose problems for children and adults at school, at work, and at their daily lives. It also covers professions that require good color vision, such as those found in aviation, shipping and railroad services. The book explains the many causes of color blindness, ranging from inborn genetic causes to color vision defects caused by diseases, injuries to the eye, and intoxication. What is Color Blindness? is an easy yet thorough guide for color blind People and their families, friends and collegues at work. The book gives answers to typical questions posed by health care professionals who deal with color blindness, including ophthalmologists, physicians, psychologists, opticians and teachers.