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
收藏
页码：315 / 319
页数：5
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