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 11 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.

中文翻译：

---

从 Stiles-Crawford 效应和眼单色像差调节的潜在信号

本研究的目的是确定由于 Stiles-Crawford (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可以驱动小瞳孔 (3 mm) 的调节，这是典型的明亮明视条件。在 21 名视觉正常的成年人中测量了中心凹、心理物理 SC 功能（17 分钟弧）和眼单色像差。10.2 分钟圆盘的视网膜图像在球面离焦水平为 -1 D、0 D 和 +1 D 的情况下模拟，在四种条件中的每一种条件下，包括单个 SC 功能的存在或不存在和单色像差的组合，具有 3毫米瞳孔。记录了 11 名参与者的住宿情况，因为每个参与者都通过 0.75 毫米的针孔观看模拟。单独的 SC 效应并没有为适应提供显着的提示。