Zhang S Z
PLA General Hospital, Beijing.
Zhonghua Er Bi Yan Hou Ke Za Zhi. 1992;27(4):204-7, 254.
The oculomotor functions were studied in 50 normal subjects aged 20 to 60 years. The experiments consisted of saccadic test, smooth pursuit eye movement and optokinetic nystagmus. The normal values and sensitive indicators of ageing were obtained. With increase in age, the latency of saccade was prolonged (P < 0.05) and its accuracy showed a tendency to decrease. There was no relationship between the velocity gain of eye movement and age during two amplitudes and velocities of smooth pursuit test, but its total harmonic distortion was increasing with ageing. With increase in optokinetic velocities from 10 degrees/s to 40 degrees/s the velocity gain of eye movement decreased in all groups, but its values in > 40 year-groups decreased more than < 40 year groups. During high velocity optokinetic stimulation, the gain was more obviously decreased in elder age group.
对50名年龄在20至60岁的正常受试者的动眼功能进行了研究。实验包括扫视试验、平稳跟踪眼球运动和视动性眼球震颤。得出了正常值和衰老敏感指标。随着年龄的增长，扫视潜伏期延长（P<0.05），其准确性呈下降趋势。在平稳跟踪试验的两个幅度和速度下，眼球运动的速度增益与年龄之间没有关系，但其总谐波失真随年龄增长而增加。随着视动速度从10度/秒增加到40度/秒，所有组的眼球运动速度增益均下降，但>40岁组的值下降幅度大于<40岁组。在高速视动刺激期间，老年组的增益下降更为明显。
