Kothe A C, Lovasik J V, Campbell M C
University of Waterloo, School of Optometry, Ontario, Canada.
Ophthalmic Physiol Opt. 1987;7(2):143-8. doi: 10.1111/j.1475-1313.1987.tb01010.x.
Dark focus of accommodation (DFA) was measured in 10 subjects using a computer-aided He-Ne Badal laser optometer having high temporal and amplitude resolution. Accommodative responses were tracked during 5 min sessions for 10 speckle exposure durations ranging from 100 to 1000 ms. DFA-speckle exposure functions fell into four distinct groups. This identifies the laser speckle exposure time as a possible contaminant in measures of DFA made by laser optometers if individual variability across exposure times is ignored. Group averaging of accommodative responses for laser exposure times obfuscates the reported individual variability.
使用具有高时间和幅度分辨率的计算机辅助氦氖巴达尔激光验光仪，对10名受试者的调节性暗焦点（DFA）进行了测量。在5分钟的测试过程中，针对10个从100到1000毫秒不等的散斑曝光持续时间，跟踪调节反应。DFA-散斑曝光函数分为四个不同的组。这表明，如果忽略不同曝光时间的个体差异，激光散斑曝光时间可能是激光验光仪测量DFA时的一个潜在干扰因素。对激光曝光时间的调节反应进行组平均会掩盖所报告的个体差异。
