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F. H. VERHOEFF, M.D.

Arch Ophthal. 1942;28(6):1000-1019.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

Previously I have described three tests¹ for binocular stereopsis, each of which utilizes one or more new principles. These tests are essentially, only qualitative, although the kinetic test, the most useful of the three, does permit acuity to be estimated with considerable accuracy. About five years ago I devised a test based on an entirely different principle, that of presenting misleading monocular criteria so as to make binocular parallax the only correct evidence of relative depth and to cause perception of false depth when this correct evidence was not perceived. So far as I am aware this principle had never before been purposely employed. During the past year I have made the test accurately quantitative. One of its important advantages is that it reduces to a negligible factor the possibility of correct guessing. The test is simple and is made without the use of a stereoscope, amblyoscope or, in . . . [Full Text PDF of this Article]

Author Affiliations
BOSTON

Footnotes
Read before the Section of Ophthalmology of the American Medical Association at the Ninety-Third Annual Session of the American Medical Association, Atlantic City, N. J., June 11, 1942.

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