Abstract
Several kinds of glare are distinguished in the literature.1 This paper is concerned with glare caused by light scattered within the eye, often called "veiling glare".1 It is not self-evident that the reduction of sinewave grating contrast sensitivity produced by scattered-light glare is likely to be a good predictor of the disability caused by glare in everyday visual environments because: (1) The retinal image of objects such as an automobile or a tree contains many different spatial frequency components; (2) the ability to recognize the shape of a complex object is not well predicted by the contrast detection sensitivity for sinewave gratings,2-5 (3) it is not intuitively obvious how a contrast sensitivity loss at, say, 2 cycles/degree translates into a reduction of ability to see and recognize objects in the everyday visual environment.
© 1991 Optical Society of America
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