Abstract:
:A clinical procedure for determining contrast sensitivity was performed on patients with suspected sella area masses. The test consisted of a series of six plates, each containing a bar pattern of fixed sinusoidal spatial frequency in which contrast varies along the length of the bar. Patients with compressive lesions of the chiasm of optic nerve showed loss of contrast sensitivity over the whole range of spatial frequencies. The general loss in contrast was evident even in patients with 20/20 Snellen acuity. After surgery, contrast sensitivity improved, as did other measures of vision, but significant contrast deficits remained. Contrast sensitivity is a sensitive indicator for the diagnosis and evaluation of compressive lesions of the chiasm.
journal_name
Neurologyjournal_title
Neurologyauthors
Kupersmith MJ,Siegel IM,Carr REdoi
10.1212/wnl.31.5.550subject
Has Abstractpub_date
1981-05-01 00:00:00pages
550-4issue
5eissn
0028-3878issn
1526-632Xjournal_volume
31pub_type
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