CHARACTERIZATION OF THE FUNDAL REFLECTANCE OF INFANTS

被引：5

作者：

HODGKINSON, IJ

CHONG, KM

MOLTENO, ACB

机构：

[1] Department of Physics, University of Otago, Dunedin

[2] Department of Ophthalmology, University of Otago, Dunedin

来源：

OPTOMETRY AND VISION SCIENCE | 1991年 / 68卷 / 07期

关键词：

FUNDAL REFLECTANCE; PHOTOREFRACTION; PHOTOSCREENING;

D O I：

10.1097/00006324-199107000-00002

中图分类号：

R77 [眼科学];

学科分类号：

100212 ;

摘要：

Pupillary images recorded by a linear knife-edge photoscreener for infants accommodating more or less within the bounds of chromatic aberration show three smooth offset pupillary irradiance ramps when analyzed with a color video camera and frame-grabbing hardware. Both the shape of the ramps and the lack of a second image in a shadowing experiment support the view that the retina acts as an angularly diffuse partial reflector in photorefraction. We propose a lateral image-spreading characteristic to account for observed color-dependent ramp heights and offsets and consider possible physical mechanisms for lateral spreading.

引用

页码：513 / 521

页数：9

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