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A QUANTITATIVE STUDY

F. HERBERT HAESSLER, M.D.

Arch Ophthal. 1937;18(5):796-801.

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

Although pupillary reactions have been thoroughly (one would be tempted to say exhaustively) studied, I have found no reference to a publication of data on the effect of adjustment for near vision acting alone as a stimulus to pupillary contraction. As is well known, the pupil contracts when the illumination of the eye is increased and also when the pair of eyes is adjusted for near vision. To study the character of the latter reaction alone it is necessary to observe the effect on the size of the pupil of near vision in darkness. This was accomplished as follows: In a totally dark room the subject of the experiment fixed his gaze on one of the luminous characters on the dial of a radiolite watch which was held at a measured distance from the eye and in such a position that the angle between the axis of the eye and . . . [Full Text PDF of this Article]

Author Affiliations
MILWAUKEE

Footnotes
Read before the Section on Ophthalmology at the Eighty-Eighth Annual Session of the American Medical Association, Atlantic City, N. J., June 10, 1937.

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