Sjöstrand J, Abrahamsson M
J Neurol Neurosurg Psychiatry. 1982 Mar;45(3):227-34. doi: 10.1136/jnnp.45.3.227.
The perception of contrast was measured in patients with acute unilateral optic neuritis by a technique of subjective suprathreshold contrast matching, and was compared with contrast sensitivity as defined by threshold measurements. The suprathreshold apparent contrast and threshold contrast sensitivity was repeatedly assessed during the recovery phase. Generally, an attenuation of suprathreshold apparent contrast was found for high and intermediate spatial frequencies in the eye with optic neuritis. At a low spatial frequency, however, the suprathreshold contrast vision was spared. The threshold contrast sensitivity was not however, spared at low spatial frequencies. During recovery this frequency-specific loss in suprathreshold apparent contrast diminished and finally a "normal" suprathreshold contrast vision was observed in all affected eyes reaching a visual acuity of 1.0 or better. In these cases also subjectively normal vision was reported in site of a persisting abnormality in threshold contrast sensitivity.
通过主观超阈值对比度匹配技术测量急性单侧视神经炎患者的对比度感知，并将其与阈值测量所定义的对比度敏感度进行比较。在恢复阶段反复评估超阈值表观对比度和阈值对比度敏感度。一般来说，视神经炎患眼中高空间频率和中等空间频率的超阈值表观对比度会降低。然而，在低空间频率时，超阈值对比度视觉得以保留。不过，低空间频率时阈值对比度敏感度并未保留。在恢复过程中，超阈值表观对比度这种频率特异性损失逐渐减少，最终在所有视力达到1.0或更好的患眼中观察到“正常”的超阈值对比度视觉。在这些情况下，尽管阈值对比度敏感度持续异常，但患者主观上仍报告视力正常。
