A comparison of binocular summation in young and older patients

被引：54

作者：

Pardhan, S

机构：

[1] Department of Optometry, University of Bradford

来源：

CURRENT EYE RESEARCH | 1996年 / 15卷 / 03期

关键词：

ageing; binocular; monocular; summation; contrast sensitivity;

D O I：

10.3109/02713689609007626

中图分类号：

R77 [眼科学];

学科分类号：

100212 ;

摘要：

Binocular and monocular contrast sensitivities were measured at two spatial frequencies of 1 and 6 c/deg in 8 young (mean age 22.6 +/- 3.8 years) and 18 older subjects with normal healthy eyes (mean age 58.4 +/- 7.3 years). Data were analysed as binocular summation ratios defined as binocular CS/'best eye'CS. Binocular summation ratios were higher for the younger group (1.46 and 1.48 for 1 and 6 c/deg respectively) compared to the older group who demonstrated a spatial frequency dependence (1.31 and 1.13 at 1 c/deg and 6 c/deg respectively). The results are discussed in terms of age-related cortical cell loss and increased monocular sensitivity differences between the two eyes.

引用

页码：315 / 319

页数：5

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