Tabernero Juan, Schaeffel Frank
Section of Neurobiology of the Eye, Ophthalmic Research Institute, Calwerstrasse 7/1, 72076 Tuebingen, Germany.
J Opt Soc Am A Opt Image Sci Vis. 2009 Oct;26(10):2206-10. doi: 10.1364/JOSAA.26.002206.
A new device was designed to provide fast measurements (4 s) of the peripheral refraction (90 degrees central horizontal field). Almost-continuous traces are obtained with high angular resolution (0.4 degrees) while the subject is fixating a central stimulus. Three-dimensional profiles can also be measured. The peripheral refractions in 10 emmetropic subjects were studied as a function of accommodation (200 cm, 50 cm, and 25 cm viewing distances). Peripheral refraction profiles were largely preserved during accommodation but were different in each individual. Apparently, the accommodating lens changes its focal length evenly over the central 90 degrees of the visual field.
一种新设备被设计用于提供周边屈光（90度中央水平视野）的快速测量（4秒）。在受试者注视中央刺激物时，能够以高角分辨率（0.4度）获得几乎连续的轨迹。还可以测量三维轮廓。研究了10名正视眼受试者的周边屈光随调节（200厘米、50厘米和25厘米观察距离）的变化情况。周边屈光轮廓在调节过程中基本保持，但个体之间存在差异。显然，调节时晶状体在中央90度视野范围内均匀地改变其焦距。
