The objective assessment of contrast sensitivity function by electrophysiological means
In recent years it has been shown that it is of considerable clinical value to determine the visual contrast sensitivity function of the patient. This can reveal the wider effects of pathology on the visual system where visual acuity may or may not be affected. There is a comprehensive literature on...
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| Veröffentlicht in: | British journal of ophthalmology 1984-09, Vol.68 (9), p.626-638 |
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| container_title | British journal of ophthalmology |
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| creator | Howe, J W Mitchell, K W |
| description | In recent years it has been shown that it is of considerable clinical value to determine the visual contrast sensitivity function of the patient. This can reveal the wider effects of pathology on the visual system where visual acuity may or may not be affected. There is a comprehensive literature on subjective approaches of obtaining this function in the clinical environment but very little on alternative objective methods. This paper describes the latter approach, which exploits electrophysiological techniques using the visual evoked cortical potential (VECP) to checkerboard onset-offset stimulation. Its application in a variety of disorders of the visual system is described. The importance of selecting the most appropriate stimulus parameters is discussed, and the relative advantages and disadvantages as compared with psychophysical methods are appraised. |
| doi_str_mv | 10.1136/bjo.68.9.626 |
| format | Article |
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Mitchell, K W</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-b506t-6986d896d9a98587ecd22f4b924bd35530c5e2eb108edf6a43f33c1c1867e15c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1984</creationdate><topic>Adult</topic><topic>Amblyopia - physiopathology</topic><topic>Biological and medical sciences</topic><topic>Diabetic Retinopathy - physiopathology</topic><topic>Evoked Potentials, Visual</topic><topic>Eye - physiopathology</topic><topic>Eye Diseases - physiopathology</topic><topic>Female</topic><topic>Glaucoma - physiopathology</topic><topic>Humans</topic><topic>Investigative techniques of ocular function and vision</topic><topic>Investigative techniques, diagnostic techniques (general aspects)</topic><topic>Macular Degeneration - physiopathology</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Middle Aged</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Howe, J W</creatorcontrib><creatorcontrib>Mitchell, K W</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>BMJ Journals</collection><collection>ProQuest One Community College</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>British journal of ophthalmology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Howe, J W</au><au>Mitchell, K W</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The objective assessment of contrast sensitivity function by electrophysiological means</atitle><jtitle>British journal of ophthalmology</jtitle><addtitle>Br J Ophthalmol</addtitle><date>1984-09-01</date><risdate>1984</risdate><volume>68</volume><issue>9</issue><spage>626</spage><epage>638</epage><pages>626-638</pages><issn>0007-1161</issn><eissn>1468-2079</eissn><coden>BJOPAL</coden><abstract>In recent years it has been shown that it is of considerable clinical value to determine the visual contrast sensitivity function of the patient. This can reveal the wider effects of pathology on the visual system where visual acuity may or may not be affected. There is a comprehensive literature on subjective approaches of obtaining this function in the clinical environment but very little on alternative objective methods. This paper describes the latter approach, which exploits electrophysiological techniques using the visual evoked cortical potential (VECP) to checkerboard onset-offset stimulation. Its application in a variety of disorders of the visual system is described. The importance of selecting the most appropriate stimulus parameters is discussed, and the relative advantages and disadvantages as compared with psychophysical methods are appraised.</abstract><cop>BMA House, Tavistock Square, London, WC1H 9JR</cop><pub>BMJ Publishing Group Ltd</pub><pmid>6466591</pmid><doi>10.1136/bjo.68.9.626</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | British journal of ophthalmology, 1984-09, Vol.68 (9), p.626-638 |
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| language | eng |
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| source | MEDLINE; EZB-FREE-00999 freely available EZB journals; PubMed Central; Alma/SFX Local Collection |
| subjects | Adult Amblyopia - physiopathology Biological and medical sciences Diabetic Retinopathy - physiopathology Evoked Potentials, Visual Eye - physiopathology Eye Diseases - physiopathology Female Glaucoma - physiopathology Humans Investigative techniques of ocular function and vision Investigative techniques, diagnostic techniques (general aspects) Macular Degeneration - physiopathology Male Medical sciences Middle Aged |
| title | The objective assessment of contrast sensitivity function by electrophysiological means |
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