Stark Lawrence R, Kruger Philip B, Rucker Frances J, Swanson William H, Schmidt Nathan, Hardy Caitlin, Rutman Hadassa, Borgovan Theodore, Burke Sean, Badar Mustanser, Shah Raj
School of Optometry, Queensland University of Technology, Brisbane, Australia.
J Mod Opt. 2009 Nov;56(20):2203-2216. doi: 10.1080/09500340903184295.
The purpose of this study is to determine if cues within the blurred retinal image due to the Stiles-Crawford (SC) effect and the eye's monochromatic aberrations can drive accommodation with a small pupil (3 mm) that is typical of bright photopic conditions.The foveal, psychophysical SC function (17 min arc) and ocular monochromatic aberrations were measured in 21 visually normal adults. The retinal image of a 10.2 min arc disc was simulated for spherical defocus levels of -1 D, 0 D and +1 D in each of four conditions consisting of combinations of the presence or absence of the individual SC function and monochromatic aberrations with a 3 mm pupil. Accommodation was recorded in eleven participants as each viewed the simulations through a 0.75-mm pinhole.The SC effect alone did not provide a significant cue to accommodation. Monochromatic aberrations provided a statistically significant but rather small cue to monocular accommodation.
本研究的目的是确定由于斯泰尔斯-克劳福德（SC）效应和眼睛的单色像差导致的模糊视网膜图像中的线索是否能够驱动在小瞳孔（3毫米）情况下的调节，这种小瞳孔情况在明亮的明视觉条件下较为典型。对21名视力正常的成年人测量了中央凹的心理物理学SC函数（17分视角）和眼睛的单色像差。在由3毫米瞳孔下SC函数和单色像差的存在或不存在的组合构成的四种条件下，针对-1 D、0 D和+1 D的球面离焦水平模拟了10.2分视角圆盘的视网膜图像。当11名参与者通过0.75毫米针孔观察模拟图像时记录了调节情况。单独的SC效应并未为调节提供显著线索。单色像差为单眼调节提供了具有统计学意义但相当小的线索。
