TY - JOUR T1 - Subtle disturbances of vision after optic neuritis elicited by studying contrast sensitivity. JF - Journal of Neurology, Neurosurgery & Psychiatry JO - J Neurol Neurosurg Psychiatry SP - 407 LP - 412 DO - 10.1136/jnnp.42.5.407 VL - 42 IS - 5 AU - R L Zimmern AU - F W Campbell AU - I M Wilkinson Y1 - 1979/05/01 UR - http://jnnp.bmj.com/content/42/5/407.abstract N2 - 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. ER -