Abstract

Monocular scotopic acuity thresholds were determined for three observers when both eyes were dark adapted and also when only the observing eye was dark adapted while the nonobserving eye was exposed to a brightness of 100 ft-L between the target presentations. Although the observers reported that the targets looked quite different under the two conditions, acuity remained substantially the same under both conditions, and it was concluded that light adapting one eye does not affect the scotopic acuity of the other eye.

© 1960 Optical Society of America

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