The effect of caffeine on the accommodative response/accommodative stimulus function and on the response AC/A ratio
作者:
ZhaiHuifang,
GossDavid A.,
HammondRaymond W.,
期刊:
Current Eye Research
(Taylor Available online 1993)
卷期:
Volume 12,
issue 6
页码: 489-499
ISSN:0271-3683
年代: 1993
DOI:10.3109/02713689309001827
出版商: Taylor&Francis
数据来源: Taylor
摘要:
Using a phoro-accommodometer, accommodation and convergence responses were measured for 17 experimental subjects before and after they ingested 200 mg caffeine. For 16 control subjects accommodation and convergence responses were determined at two test sessions separated by 45 min. For the experimental group, the accommodative response/accommodative stimulus (Ar/As) slope increased 0.05 D/D after ingestion of caffeine, and the response AC/A ratio decreased 3.05Δ/D. The y-intercept of the convergence response/accommodative response increased by 3.7Δin the experimental group. These changes were statistically significant. For the control group, the differences in Ar/As slope, response AC/A ratio, and convergence response/accommodative response y-intercept between first and second test sessions were not statistically significant.
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