动态检影法下近视患者反应性与刺激性AC／A  

An investigation of stimulus and response AC/A ratios in myopia based on MEM dynamic retinoscopy

作　　者：张艳龙[1] 高祥璐[1] 王琦[1] 石浩淼[1] 高飞[1] 刘洵[1] 

机构地区：[1]天津医科大学眼科医院,300384

出　　处：《中华眼视光学与视觉科学杂志》2013年第7期436-438,共3页Chinese Journal Of Optometry Ophthalmology And Visual Science

摘　　要：目的通过测量调节滞后量和眼位，研究在不同调节刺激下，患者反应性AC／A和刺激性AC／A的相关性。方法横断面研究。选择在校大学生29例，在全矫基础上，利用棱镜分离法测量被检者【平均年龄（23．3＋3．8）岁，除近视外，无其他眼部及全身疾病】在5m和40em处的隐斜量。在全矫度数的基础上添加＋1．00、＋1．50、-1．00、-2．00D球镜，重新检查被检者在40cm处的隐斜视，应用MEM动态检影法测量患者的调节滞后量。采用秩和检验对数据进行统计分析。结果在不同的调节刺激下，患者的调节滞后量、梯度法反应性AC／A及梯度法刺激性AC／A的差异均有统计学意义（x2=116．85、8．992、17．319，P〈0．05）。基于梯度法得到的反应性AC／A与刺激性AC／A均呈正相关（＋1．00D：r=0．542，P〈0．01；-1．00D：r=0．789，P〈0．01；-2．00D：r=0．812，P〈0．01）。基于计算法得到的反应性AC／A与刺激性AC／A也呈正相关（r=0．859，P〈0．01）。结论附加负球镜时，调节滞后量更大。计算法求的反商件AC/A与刺瀚忡AC／A的相姜件帚捍．Objective To study the correlation between the stimulus and response AC/A ratios by measuring a patient＇s accommodative lag and eye position using different stimuli to induce accommodation. Methods A cross-sectional study was used. Twenty-nine myopic college students （average age 23.3±3.8） were randomly selected for the study. Phoria was measured at distances of 40 cm and 5 m by prism separation when wearing full correction. Phoria was measured again at a distance of 40 cm after adding spherical lenses of ＋1.00 D, ＋1.50 D, -1.00 D and -2.00 D. Accommodative lag was then measured with each lens power by the monocular estimation method using dynamic retionscopy. Finally, the data were analyzed by a rank-sum test. Results There were statistically significant differences between accommodative lag and gradient response and stimulus AC/A ratios when different accommodative stimuli were used （X^2=116.85, 8.992, 17.319, P〈0.05）. The correlation coefficients between response and stimulus AC/A ratios based on the gradient method were 0.542 （P〈0.01）, 0.789 （P〈0.O1）,and 0.812 （P〈0.01） with added lenses of ＋1.00 D, -1.00 D, -2.00 D. And the correlation coefficient between response and stimulus AC/A ratios based on the calculation method was 0.859 （P〈0.01）. Conclusion A subject has less accommodative response and more accommodative lag with minus spherical addition than with a plus spherical addition lens. The correlation between stimulus and response AC/A ratios is highest when using a calculation method.

关 键 词：近视 调节滞后 调节性集合 调节 

分 类 号：R77[医药卫生—眼科]