Yebra-Pimentel Vilar E, Giraldez-Fernandez M J, Enoch J M, Lakshminarayanan V, Knowles R, Srinivasan R
Departamento de Fisica Aplicada, Universidade de Santiago de Compostela, Galicia, Spain.
J Opt Soc Am A Opt Image Sci Vis. 1995 Oct;12(10):2293-304. doi: 10.1364/josaa.12.002293.
With certain (but not all) vernier acuity (VeA) stimulus displays observers exhibit no or slight performance decrements with aging. Because three-point VeA test displays are much more easily applied experimentally and clinically, we examined visual performance on this task as a function of age. Ages of groups tested ranged from 20 to 70+ years (some individuals were 90+ years old). Eyes were examined monocularly. We tested three- and two-point sharply defined VeA arrays and a three-point ground-glass-degraded display (simulating a 20/100 nuclear cataract). Gap or feature separations were varied. Results obtained with the three-point display showed little alteration with age. Image degradation resulted in reduction in performance when small gap separations were used between the test points, but only slight decrements for large gap separations were recorded. The finding that performance with certain VeA targets is largely unaffected by age is confirmed and is expanded.
对于某些（但并非所有）游标视力（VeA）刺激显示，观察者的表现不会随着年龄增长而下降或仅有轻微下降。由于三点VeA测试显示在实验和临床应用中更为简便，我们研究了该任务中的视觉表现与年龄的关系。测试的年龄组范围从20岁到70多岁（有些个体为90多岁）。单眼检查眼睛。我们测试了三点和两点清晰定义的VeA阵列以及三点毛玻璃退化显示（模拟20/100核性白内障）。间隙或特征间距有所变化。三点显示的结果表明年龄变化对其影响很小。当测试点之间使用小间隙间距时，图像退化会导致表现下降，但记录到的大间隙间距时仅有轻微下降。某些VeA目标的表现很大程度上不受年龄影响这一发现得到了证实并得到了扩展。
