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Dynamic measures of vergence accommodation.

V V Krishnan·D Shirachi·L Stark
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Abstract

Dynamic measures of vergence accommodation (VG-ACC) are necessary for complete analysis of the triadic near response but are difficult to obtain because eyeball rotation affects accommodative measures. A dynamic optometer that uses the third Purkinje image is shown to be insensitive to small eye rotations and permits dynamic measures of VG-ACC responses. Such measures are presented to demonstrate the feasibility of this method. Average latency measures of 260 msec for VG-ACC fall between the latency of 160 msec for disparity vergence and the latency of 380 msec for accommodation. Additional dynamic features of VG-ACC resemble those of other components of the near triad.

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Accommodation, OcularHumansOptometryReaction TimeJournal ArticleResearch Support, U.S. Gov't, P.H.S.

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V V Krishnan, D Shirachi, L Stark. 1977. Dynamic measures of vergence accommodation.. https://doi.org/10.1097/00006324-197707000-00007

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