Subtle disturbances of vision after optic neuritis elicited by studying contrast sensitivity.
Subtle disturbances of vision after optic neuritis elicited by studying contrast sensitivity.
复制标题
通过研究对比敏感度引起视神经炎后轻微的视力障碍。
DOI：
10.1136/jnnp.42.5.407
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
I M Wilkinson
中科院分区：
文献类型：
--
作者：
R. L. Zimmern;F W Campbell;I M Wilkinson
8例患者的主观障碍的视觉，但正常Snellen视力后视神经炎被证明有一个异常的对比敏感度功能，在他们的受影响的眼睛。尽管视力接近正常，但某些视力障碍似乎与对比敏感度功能异常有关。这种异常可能会影响模式识别，而不会影响Snellen敏锐度，因为后者的高对比度及其与较高空间频率的主要关联。因此，对比敏感度函数是唯一可用于研究视觉的那些方面的工具，这些方面仍然不受其他视觉功能主观测试的影响。
Eight patients with a subjective disorder of vision yet normal Snellen acuities after optic neuritis were shown to have an abnormal contrast sensitivity function in their affected eye. It appears that certain disorders of vision are associated with an abnormality of the contrast sensitivity function in spite of near normal visual acuity. Such an abnormality may affect pattern recognition without having an influence on Snellen acuity because of the high contrast of the latter and its predominant association with the higher spatial frequencies. Contrast sensitivity function is thus the only tool available to study those aspects of vision which have remained impervious to other subjective tests of visual function.