Author: Krueger H.

Source: Journal of Modern Optics, Volume 20, Number 4, April 1973 , pp. 277-285(9)

Publisher: Taylor and Francis Ltd

Abstract:

An apparatus is described that automatically measures the course of the accommodation of the human eye with infra-red light. The principle of measurement is based on the spreading of the image of a test target on the retina when the eye is defocused. The measuring technique is an autocollimating one. Each single measurement tests the state of accommodation over a range from -7 to +2 D. Targets with a complicated structure such as gratings can be used to get a better criterion for defocusing. The apparatus gives 50 measurements of accommodation per second. Compared to the slow changes of accommodation this is an effectively continuous registration.

The lag of accommodation and the transfer function of accommodation computed from the response to a sudden shift in target distance were measured with the apparatus.

Document Type: Research article

Affiliations: 1: Institut für Arbeitsphysiologie Technische Universität München, 8 München 40, Barbarastrasse 16, Germany

Publication date: 1973-04-01

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