CAJ | 학술논문

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,位于距受试者有眼角膜平面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.
목적 설계열독상태하문자정현속도화대소,연구열독성문자정현속도화대소대조절반응적영향.방법 취측량료24명정시자개방시야열독상태하우안적조절반응.열독재료시중문단문,위우거수시자유안각막평면33cm처적전뇌현시병상,통과쾌속서렬시각정현방식연건이단개자부정현,문자정현속도이매분종50자위고정증솔,공6개정현속도,매분종분별위50자、100자、150자、200자、250자、300자.문자대소포괄20pt화9pt.채용SEIKO-WV500자동험광의,분별측량불동문자정현속도화대소하적조절반응.결과 진관조절반응적개체차이교대,단수착문자정현속도증쾌,조절체후유명현적감소추세(P=0.000);대소량충문자소유도적조절반응차이무통계학의의(P＞0.05).결론 문자정현속도영향조절반응,가이해석열독여근시적발생발전적가능내재련계.
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 righteye were measured by using a Grand Seiko WV-500 autorefractor.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(P0.466).Conclusions The decreased accommodative lag caused by the faster presenting speed,which may be linked to the reading and the myopia developing.