Fast scanning photoretinoscope for measuring peripheral refraction as a function of accommodation

被引：35

作者：

Tabernero, Juan ^{[1
]}

Schaeffel, Frank ^{[1
]}

机构：

[1] Ophthalm Res Inst, Sect Neurobiol Eye, D-72076 Tubingen, Germany

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 2009年 / 26卷 / 10期

关键词：

EYE GROWTH; ABERRATIONS; VISION; ERRORS; MYOPIA; SHAPE;

D O I：

10.1364/JOSAA.26.002206

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2009 Optical Society of America

引用

页码：2206 / 2210

页数：5

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