Individual differences in the shape of the nasal visual field
[Display omitted] •The stimulus was resistant to peripheral defocus and reduced illumination.•Between-subject differences in the shape of the nasal visual field were substantial.•In some people there was no peripheral depression of sensitivity, in most the depression was mild.•A few had more severe...
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| Veröffentlicht in: | Vision research (Oxford) 2017-12, Vol.141, p.23-29 |
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| creator | Swanson, William H. Dul, Mitchell W. Horner, Douglas G. Malinovsky, Victor E. |
| description | [Display omitted]
•The stimulus was resistant to peripheral defocus and reduced illumination.•Between-subject differences in the shape of the nasal visual field were substantial.•In some people there was no peripheral depression of sensitivity, in most the depression was mild.•A few had more severe peripheral depression that persisted in longitudinal testing.
Between-subject differences in the shape of the nasal visual field were assessed for 103 volunteers 21–85years of age and free of visual disorder. Perimetry was conducted with a stimulus for which contrast sensitivity is minimally affected by peripheral defocus and decreased retinal illumination. One eye each was tested for 103 volunteers free of eye disease in a multi-center prospective longitudinal study. A peripheral deviation index was computed as the difference in log contrast sensitivity at outer (25–29° nasal) and inner (8° from fixation) locations. Values for this index ranged from 0.01 (outer sensitivity slightly greater than inner sensitivity) to −0.7 log unit (outer sensitivity much lower than inner sensitivity). Mean sensitivity for the inner locations was independent of the deviation index (R2 |
| doi_str_mv | 10.1016/j.visres.2016.04.001 |
| format | Article |
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•The stimulus was resistant to peripheral defocus and reduced illumination.•Between-subject differences in the shape of the nasal visual field were substantial.•In some people there was no peripheral depression of sensitivity, in most the depression was mild.•A few had more severe peripheral depression that persisted in longitudinal testing.
Between-subject differences in the shape of the nasal visual field were assessed for 103 volunteers 21–85years of age and free of visual disorder. Perimetry was conducted with a stimulus for which contrast sensitivity is minimally affected by peripheral defocus and decreased retinal illumination. One eye each was tested for 103 volunteers free of eye disease in a multi-center prospective longitudinal study. A peripheral deviation index was computed as the difference in log contrast sensitivity at outer (25–29° nasal) and inner (8° from fixation) locations. Values for this index ranged from 0.01 (outer sensitivity slightly greater than inner sensitivity) to −0.7 log unit (outer sensitivity much lower than inner sensitivity). Mean sensitivity for the inner locations was independent of the deviation index (R2<1%), while mean sensitivity for the outer locations was not (R2=38%, p<0.0005). Age was only modestly related to the index, with a decline by 0.017 log unit per decade (R2=10%). Test-retest data for 21 volunteers who completed 7–10 visits yielded standard deviations for the index from 0.04 to 0.17 log unit, with a mean of 0.09 log unit. Between-subject differences in peripheral deviation persisted over two years of longitudinal testing. Peripheral deviation indices were correlated with indices for three other perimetric stimuli used in a subset of 24 volunteers (R2 from 20% to 49%). Between-subject variability in shape of the visual field raises concerns about current clinical visual field indices, and further studies are needed to develop improved indices.</description><identifier>ISSN: 0042-6989</identifier><identifier>EISSN: 1878-5646</identifier><identifier>DOI: 10.1016/j.visres.2016.04.001</identifier><identifier>PMID: 27187584</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Contrast sensitivity ; Perimetry ; Periphery ; Visual field</subject><ispartof>Vision research (Oxford), 2017-12, Vol.141, p.23-29</ispartof><rights>2016 The Authors</rights><rights>Copyright © 2016 The Authors. Published by Elsevier Ltd.. All rights reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c463t-baf00aea40cc38b642dc06da3bc440de49c9e6d584a59349206ba19a805703b23</citedby><cites>FETCH-LOGICAL-c463t-baf00aea40cc38b642dc06da3bc440de49c9e6d584a59349206ba19a805703b23</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.visres.2016.04.001$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27187584$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Swanson, William H.</creatorcontrib><creatorcontrib>Dul, Mitchell W.</creatorcontrib><creatorcontrib>Horner, Douglas G.</creatorcontrib><creatorcontrib>Malinovsky, Victor E.</creatorcontrib><title>Individual differences in the shape of the nasal visual field</title><title>Vision research (Oxford)</title><addtitle>Vision Res</addtitle><description>[Display omitted]
•The stimulus was resistant to peripheral defocus and reduced illumination.•Between-subject differences in the shape of the nasal visual field were substantial.•In some people there was no peripheral depression of sensitivity, in most the depression was mild.•A few had more severe peripheral depression that persisted in longitudinal testing.
Between-subject differences in the shape of the nasal visual field were assessed for 103 volunteers 21–85years of age and free of visual disorder. Perimetry was conducted with a stimulus for which contrast sensitivity is minimally affected by peripheral defocus and decreased retinal illumination. One eye each was tested for 103 volunteers free of eye disease in a multi-center prospective longitudinal study. A peripheral deviation index was computed as the difference in log contrast sensitivity at outer (25–29° nasal) and inner (8° from fixation) locations. Values for this index ranged from 0.01 (outer sensitivity slightly greater than inner sensitivity) to −0.7 log unit (outer sensitivity much lower than inner sensitivity). Mean sensitivity for the inner locations was independent of the deviation index (R2<1%), while mean sensitivity for the outer locations was not (R2=38%, p<0.0005). Age was only modestly related to the index, with a decline by 0.017 log unit per decade (R2=10%). Test-retest data for 21 volunteers who completed 7–10 visits yielded standard deviations for the index from 0.04 to 0.17 log unit, with a mean of 0.09 log unit. Between-subject differences in peripheral deviation persisted over two years of longitudinal testing. Peripheral deviation indices were correlated with indices for three other perimetric stimuli used in a subset of 24 volunteers (R2 from 20% to 49%). Between-subject variability in shape of the visual field raises concerns about current clinical visual field indices, and further studies are needed to develop improved indices.</description><subject>Contrast sensitivity</subject><subject>Perimetry</subject><subject>Periphery</subject><subject>Visual field</subject><issn>0042-6989</issn><issn>1878-5646</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kMtOwzAQRS0EoqXwBwhlySZh7DiOswAJVbwkJDawthx7Ql2lSbHTSvw9Li2vDavRaO7cO3MIOaWQUaDiYp6tXfAYMha7DHgGQPfImMpSpoXgYp-MAThLRSWrETkKYQ4AZcGqQzJiZZQVko_J5UNn3drZlW4T65oGPXYGQ-K6ZJhhEmZ6iUnffDadDlEVUzfixmFrj8lBo9uAJ7s6IS-3N8_T-_Tx6e5hev2YGi7yIa11A6BRczAml7XgzBoQVue14Rws8spUKGw8SBdVzisGota00hKKEvKa5RNytfVdruoFWoPd4HWrlt4ttH9XvXbq76RzM_Xar1VBBS2ZiAbnOwPfv60wDGrhgsG21R32q6CoZEJIwbmMUr6VGt-HCLj5jqGgNuTVXG3Jqw15BVxF8nHt7PeJ30tfqH9-wAhq7dCrYNwGtnUezaBs7_5P-AB7jJeM</recordid><startdate>20171201</startdate><enddate>20171201</enddate><creator>Swanson, William H.</creator><creator>Dul, Mitchell W.</creator><creator>Horner, Douglas G.</creator><creator>Malinovsky, Victor E.</creator><general>Elsevier Ltd</general><scope>6I.</scope><scope>AAFTH</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20171201</creationdate><title>Individual differences in the shape of the nasal visual field</title><author>Swanson, William H. ; Dul, Mitchell W. ; Horner, Douglas G. ; Malinovsky, Victor E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c463t-baf00aea40cc38b642dc06da3bc440de49c9e6d584a59349206ba19a805703b23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Contrast sensitivity</topic><topic>Perimetry</topic><topic>Periphery</topic><topic>Visual field</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Swanson, William H.</creatorcontrib><creatorcontrib>Dul, Mitchell W.</creatorcontrib><creatorcontrib>Horner, Douglas G.</creatorcontrib><creatorcontrib>Malinovsky, Victor E.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Vision research (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Swanson, William H.</au><au>Dul, Mitchell W.</au><au>Horner, Douglas G.</au><au>Malinovsky, Victor E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Individual differences in the shape of the nasal visual field</atitle><jtitle>Vision research (Oxford)</jtitle><addtitle>Vision Res</addtitle><date>2017-12-01</date><risdate>2017</risdate><volume>141</volume><spage>23</spage><epage>29</epage><pages>23-29</pages><issn>0042-6989</issn><eissn>1878-5646</eissn><abstract>[Display omitted]
•The stimulus was resistant to peripheral defocus and reduced illumination.•Between-subject differences in the shape of the nasal visual field were substantial.•In some people there was no peripheral depression of sensitivity, in most the depression was mild.•A few had more severe peripheral depression that persisted in longitudinal testing.
Between-subject differences in the shape of the nasal visual field were assessed for 103 volunteers 21–85years of age and free of visual disorder. Perimetry was conducted with a stimulus for which contrast sensitivity is minimally affected by peripheral defocus and decreased retinal illumination. One eye each was tested for 103 volunteers free of eye disease in a multi-center prospective longitudinal study. A peripheral deviation index was computed as the difference in log contrast sensitivity at outer (25–29° nasal) and inner (8° from fixation) locations. Values for this index ranged from 0.01 (outer sensitivity slightly greater than inner sensitivity) to −0.7 log unit (outer sensitivity much lower than inner sensitivity). Mean sensitivity for the inner locations was independent of the deviation index (R2<1%), while mean sensitivity for the outer locations was not (R2=38%, p<0.0005). Age was only modestly related to the index, with a decline by 0.017 log unit per decade (R2=10%). Test-retest data for 21 volunteers who completed 7–10 visits yielded standard deviations for the index from 0.04 to 0.17 log unit, with a mean of 0.09 log unit. Between-subject differences in peripheral deviation persisted over two years of longitudinal testing. Peripheral deviation indices were correlated with indices for three other perimetric stimuli used in a subset of 24 volunteers (R2 from 20% to 49%). Between-subject variability in shape of the visual field raises concerns about current clinical visual field indices, and further studies are needed to develop improved indices.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>27187584</pmid><doi>10.1016/j.visres.2016.04.001</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Vision research (Oxford), 2017-12, Vol.141, p.23-29 |
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| source | ScienceDirect Journals (5 years ago - present); EZB-FREE-00999 freely available EZB journals |
| subjects | Contrast sensitivity Perimetry Periphery Visual field |
| title | Individual differences in the shape of the nasal visual field |
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