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Article
April 1963

A New Kinetic Test for Binocular Stereopsis

Author Affiliations

Marblehead, Mass.

Arch Ophthalmol. 1963;69(4):436-437. doi:10.1001/archopht.1963.00960040442004
Abstract

Although I devised this test many years ago, I call it new because I have never previously published it. In 1936 and 1940, I described my first kinetic test.1,2 The essential feature of and the reason for the name of this test is that it causes a figure that is not moving to appear to move. The moving disparate image disappears from consciousness, that is to say, is replaced by its correspondent, but nevertheless makes the other disparate image to appear to move even when this other image is actually motionless on the retina. In the new test a figure to be known as the "man in the moon" is substituted for the stationary figure of a ball with a hole in it in the first test. For the "box" in the first test, I have substituted in the new test a truncated cone represented by two circles before

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