阅读状态下文字呈现速度和大小对调节反应的影响  

The impact of text size and presentation speed on accommodative response during reading

作　　者：任凤英[1] 邓如芝[1] 保金华[1] 

机构地区：[1]温州医学院眼视光学院,325027

出　　处：《中国实用眼科杂志》2011年第2期118-121,共4页Chinese Journal of Practical Ophthalmology

基　　金：国家“十一五”科技支撑计划项目（2007BA118809）

摘　　要：目的设计阅读状态下文字呈现速度和大小，研究阅读性文字呈现速度和大小对调节反应的影响。方法取测量了24名正视者开放视野阅读状态下右眼的调节反应。阅读材料是中文短文，位于距受试者右眼角膜平面33cm处的电脑显示屏上，通过快速序列视觉呈现方式软件以单个字符呈现，文字呈现速度以每分钟50字为固定增率，共6个呈现速度，每分钟分别为50字、100字、150字、200字、250字、300字。文字大小包括20pt和9pt。采用SEIKO—WV500自动验光仪，分别测量不同文字呈现速度和大小下的调节反应。结果尽管调节反应的个体差异较大，但随着文字呈现速度增快，调节滞后有明显的减小趋势（P=0．000）；大小两种文字所诱导的调节反应差异无统计学意义（P〉0．05）。结论文字呈现速度影响调节反应，可以解释阅读与近视的发生发展的可能内在联系。Objective To investigate the impact of text size and presentation speed of words on accommodative response in various simulated reading condition. Methods Twenty-four emmetropes were required to read Chinese novels presented by rapid serial visual presentation in one character on a computer screen at a distance of 33cm. Accommodative responses of the right eye were measured by using a Grand Seiko WV-500 autoreffactor. Character sizes of 20 point and 9 point were presented in the speed from 50, 100, 150, 200, and 250 to 300 characters/minute. Results Despite large inter-subject variability, the accommodative lag significantly decreased with increasing presenting speed （P =0.000）. There were no significant differences of accommodative responses between the two character sizes （P=0.466）. Conclusions The decreased accommodative lag caused by the faster presenting speed, which may be linked to the reading and the myopia developing.

关 键 词：阅读 调节反应 RSVP 近视 

分 类 号：R770.425[医药卫生—眼科]