Linked Life Data

6995374

Source:http://linkedlifedata.com/resource/pubmed/id/6995374

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1980-10-24
pubmed:abstractText
In this chapter the theoretical reasons were outlined and clinical data summarized as to why spatial contrast measurements can reveal visual losses that are not uncovered by testing visual acuity, no matter which optotype one uses or how carefully the measurement is made. Spatial contrast sensitivity measurements may disclose different types of contrast losses in patients with different lesions but with identical visual acuity. The relationship of different types of spatial contrast sensitivity losses (plotted as visuograms) to specific location or cause of lesions is not yet clear. Patients with glaucoma show losses that occur infrequently in other types of eye or visual pathway diseases, but the specificity of the typical contrast loss needs confirmation. The definite clinical value of contrast sensitivity measurements is that they can identify incipient abnormalities in the visual pathways that subserve foveal vision. In addition to this definite diagnostic application, using sinusoidal gratings as stimuli for both contrast sensitivity and for VEP measurements is useful in a research-oriented clinical testing facility.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0020-8167
pubmed:author
pubmed:issnType
Print
pubmed:volume
20
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
135-53
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1980
pubmed:articleTitle
Detection of visual defects using the contrast sensitivity function.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Review