The Problems of Vision in Flight at High Altitude

By the process of experimental work and observations, the author of this important contribution clarifies and crystallizes the visual problems of flight at high altitude. He analyzes the basic physical cause—the reversal of light distribution at high altitudes. The bright sky formed by haze and clouds is below, and the darker blue sky is above. This reversal accounts for the glare problems, and the clear blue sky above, without clouds, presents an empty visual field producing problems of size, distance, speed, and air, to air researchers. Every ophthalmologist interested in the physiology of vision at high altitudes and every flight surgeon should have this book in his library.