摘要
目的分析眼动追踪仪测量的青年受试者包括正视者与迟发性近视者AC/A的差异。设计横断面调查研究。研究对象选取40例年轻受试者,根据问卷调查和验光结果分为正视组(17例)和迟发性近视组(23例)。方法使用Model310眼动追踪仪测量不同距离的调节性辐辏,使用红外自动验光仪测量不同距离的调节反应,获得刺激性AC/A(AC/AS)和反应性AC/A(AC/AR)。主要指标调节性辐辏、调节反应、AC/A。结果迟发性近视组和正视组的AC/AS分别为4.8472和4.6533,AC/AR分别为7.4733和7.5385,两个比值在组间均无显著性差异(P=0.767,0.959),两组在各调节刺激水平的调节反应也无显著性差异(P=0.728),AR/AS曲线斜率较为接近。结论眼动追踪仪测量的AC/A在正视组和迟发性近视组之间无显著性差异,AC/A不是体现两者差异的参数。
Objective To assess the difference of AC/A ratio measured with Eye tracker in young people including emmetropes and late-onset myopes. Design Cross-sectional study. Participants 40 young subjects were divided into emmetropic group （ 17 cases） and late-onset myopic group（23 cases） according to results of survey and subjective refraction. Methods Accommodative convergence was measured with Eye tracker and accommodative response was measured with infrared autorefractor, which gave stimulated AC/A（AC/AS） and response AC/A（AC/AR） ratios. Main Outcome Measures Accommodative convergence,accommodation response,AC/A ratios. Results There were no statistic differences of both AC/AS ratios which were 4. 8472 and 4. 6533 and re- sponse AC/AR ratios which were 7.4733 and 7.5385 between emmetropes and late-onset myopes（ P = 0. 767,0. 959）. There was also no statistic difference of accommodative responses between these two groups（ P = 0. 728 ）. The slopes of AR/AS curve of these two groups were pretty close. Conclusions The similarity of AC/A ratios measured with Eye tracker between emrnetropic group and lateonset myopic group shows that AC/A ratio is not the main parameter that can differentiate these two groups.
出处
《眼科》
CAS
2005年第5期318-320,共3页
Ophthalmology in China
基金
浙江省自然科学基金青年人才基金(RC9606)资助
关键词
眼动追踪仪
AC/A
调节反应
Eye tracker
AC/A ratio
accommodative response
