Dynamic Measures of vergence Accommodation
作者:
V. KRISHNAN,
DOUGLAS SHIRACHI,
LAWRENCE STARK,
期刊:
American Journal of Optometry and Physiological Optics
(OVID Available online 1977)
卷期:
Volume 54,
issue 7
页码: 470-473
ISSN:0093-7002
年代: 1977
出版商: OVID
关键词: vergence accommodation;measurement;dynamic optometer;vergence;latency
数据来源: OVID
摘要:
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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