摘要
目的评价双眼开放视野红外自动验光仪（WAM验光仪）测量的准确性与可重复性。方法横断面研究。连续收集北京同仁医院就诊的217例中小学生（7～16岁）。对被检者行眼科常规检查排除眼部疾病后，进行主觉验光与WAM验光仪静态及动态模式下的客观验光。对测量结果进行等效球镜度与水平轴及45度轴处的Jackson cross-cylinders（J0与J45）换算后，求得组内相关系数（ICC）以评价测量的准确性。对14例（28眼）成年志愿者（19～33岁）进行WAM验光仪两种测量模式及两种距离视标（6m与20cm）的客观验光2次，间隔24h以上。分别采用变异系数（CV）与ICC对同一测量时间与不同测量时间的测量值进行可重复性评价。结果WAM验光仪两种测量模式与主觉验光测得的球镜度和（或）等效球镜度在不同年龄段被检者中的ICC值均大于0．95：J0与J45为0.38～0．84。在同一测量时间，由WAM验光仪两种测量模式对于两种距离视标测得的球镜度、等效球镜度与瞳孔直径的变异系数为1．54％～8．31％；J0与J45为23．54％～32．70％。不同测量时间测得的球镜度与等效球镜度的ICC值均大于0．90；J0、J45与瞳孔直径的ICC为0．71～0．89。结论WAM验光仪的两种测量模式均具有较好的准确性与可重复性。因WAM验光仪能连续高速地监测眼的三联反应，在临床与科研领域具有更广阔的应用前景。
Objective To evaluate the accuracy and reproducibility of binocular, open-field, infrared auto ref/keratometer measurements （WAM-5500, Grand-Seiko, short for WAM autorefractor, below）. Methods Two hundred seventeen students （aged 7-16 years） were consecutively enrolled in a cross-sectional study at Beijing Tongren Hospital. Autorefraction and subjective refraction were performed on each subject in both static and dynamic modes using the WAM autorefraetor after other ocular diseases were excluded by completing routine ophthalmic examinations. Spherical equivalent （SE） and Jackson cross-cylinders at axes 0 and 45 （J0 and J45） were calculated; the intraelass correlation coefficient （ICC） was also calculated to assess accuracy. Autorefraction was performed twice （separated by at least 24 hours） for 14 adult volunteers （28 eyes） in both modes of the WAM autorefractor with 2 targets （6m and 20cm）. Intra-test and inter-test reproducibility were evaluated using a coefficient of variation （CV） and ICC, respectively. Results The ICC of the spherical refractive error and （or） SE obtained by the two modes of the WAM autorefractor and subjective refraction were higher than 0.95 for subjects in the different age groups; J0 and J45 ranged from 0.38 to 0.84. For intra-test reproducibility, the CVs of spherical refraction, SE and pupil diameter （PD） obtained by both modes of the WAM autorefractor for the two targets ranged from 1.54% to 8.31%; J0 and J45 ranged from 23.54% to 32.70%. For inter-test reproducibility, the ICCs of the spherical refractive error and SE were higher than 0.90; ICCs for J0, J45 and PD ranged from 0.71 to 0.89. Conclusion Both the static and dynamic modes of the WAM autorefractor showed it is reliable and repeatable. The autorefraetor has potential utility in both clinical tests and scientific research based on both its consecutive and high-speed monitor functions for three ocular responses.
出处
《中华眼视光学与视觉科学杂志》
CAS
2012年第11期679-683,共5页
Chinese Journal Of Optometry Ophthalmology And Visual Science
基金
基金项目：北京市科技新星计划（2009844）
关键词
自动验光
主觉验光
准确性
可重复性
结果
Autorefraction
Subjective refraction
Accuracy
Reproducibility of results
