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ON THE USE OF SMALL ARTIFICIAL PUPILS TO OPEN‐LOOP THE ACCOMMODATION SYSTEM
Author(s) -
Ward P. A.,
Charman W. N.
Publication year - 1987
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.1987.tb01019.x
Subject(s) - accommodation , loop (graph theory) , optometry , computer science , psychology , mathematics , medicine , neuroscience , combinatorics
Monocular accommodation responses to stimuli at vergences from 0 to‐4.5 D (i.e. effective object‐eye distances from infinity to 22 cm) were measured objectively using artificial pupils of 0.5,0.75, 1.0 and 3.0 mm diameters and a constant retinal illuminance of 7000 td. The slopes of the response/stimulus curves for the 0.75, 1.0 and 3.0 mm pupils agree with those reported previously. The 0.5 mm pupil produced open‐loop accommodation, no systematic change in accommodation being observed as the stimulus vergence was varied. However, the response drifted considerably with this pupil diameter.