Spherical aberration: Friend or foe?
To determine the level of residual spherical aberration that gives the best objective and subjective quality of image after cataract surgery with intraocular lens (IOL) implantation. Six months after microincision (1.8 mm) cataract surgery with aspheric IOL implantation, total aberrations were compu...
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| Veröffentlicht in: | Acta ophthalmologica (Oxford, England) England), 2013-08, Vol.91 (s252), p.0-0 |
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| creator | VANDERMEER, G NOCHEZ, Y PISELLA, PJ |
| description | To determine the level of residual spherical aberration that gives the best objective and subjective quality of image after cataract surgery with intraocular lens (IOL) implantation. Six months after microincision (1.8 mm) cataract surgery with aspheric IOL implantation, total aberrations were computed using a Wavescan aberrometer. The modulation transfer function (MTF), Strehl ratio, and objective index of scattering were measured using the Objective Quality Analysis System. Objective depth of focus was computed as the focus range at which the Strehl ratio did not fall below 50% of maximum. Subjective depth of focus was calculated as the difference between the vergence of the punctum remotum and that of the punctum proximum. Thirty patients (54 eyes) were evaluated. The MTF cutoff values were higher with decreasing total ocular spherical aberration (r = 0.56; P |
| doi_str_mv | 10.1111/j.1755-3768.2013.2734.x |
| format | Article |
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Six months after microincision (1.8 mm) cataract surgery with aspheric IOL implantation, total aberrations were computed using a Wavescan aberrometer. The modulation transfer function (MTF), Strehl ratio, and objective index of scattering were measured using the Objective Quality Analysis System. Objective depth of focus was computed as the focus range at which the Strehl ratio did not fall below 50% of maximum. Subjective depth of focus was calculated as the difference between the vergence of the punctum remotum and that of the punctum proximum. Thirty patients (54 eyes) were evaluated. The MTF cutoff values were higher with decreasing total ocular spherical aberration (r = 0.56; P<.05). Objective and subjective depth of focus were positively correlated with total spherical aberration (r = 0.26 and r = 0.46, respectively; P<.05). A final spherical aberration of zero obtained by compensation of IOL asphericity gave the greatest improvement in objective quality of vision and better MTF contrast. However, a final target ocular spherical aberration between 0.07 μm and 0.10 μm should be considered to be the best compromise between subjective depth of focus and objective contrast sensitivity.</description><identifier>ISSN: 1755-375X</identifier><identifier>EISSN: 1755-3768</identifier><identifier>DOI: 10.1111/j.1755-3768.2013.2734.x</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>Ophthalmology</subject><ispartof>Acta ophthalmologica (Oxford, England), 2013-08, Vol.91 (s252), p.0-0</ispartof><rights>2013 Acta Ophthalmologica</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fj.1755-3768.2013.2734.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,1427,27901,27902,45551,46808</link.rule.ids></links><search><creatorcontrib>VANDERMEER, G</creatorcontrib><creatorcontrib>NOCHEZ, Y</creatorcontrib><creatorcontrib>PISELLA, PJ</creatorcontrib><title>Spherical aberration: Friend or foe?</title><title>Acta ophthalmologica (Oxford, England)</title><description>To determine the level of residual spherical aberration that gives the best objective and subjective quality of image after cataract surgery with intraocular lens (IOL) implantation. Six months after microincision (1.8 mm) cataract surgery with aspheric IOL implantation, total aberrations were computed using a Wavescan aberrometer. The modulation transfer function (MTF), Strehl ratio, and objective index of scattering were measured using the Objective Quality Analysis System. Objective depth of focus was computed as the focus range at which the Strehl ratio did not fall below 50% of maximum. Subjective depth of focus was calculated as the difference between the vergence of the punctum remotum and that of the punctum proximum. Thirty patients (54 eyes) were evaluated. The MTF cutoff values were higher with decreasing total ocular spherical aberration (r = 0.56; P<.05). Objective and subjective depth of focus were positively correlated with total spherical aberration (r = 0.26 and r = 0.46, respectively; P<.05). A final spherical aberration of zero obtained by compensation of IOL asphericity gave the greatest improvement in objective quality of vision and better MTF contrast. However, a final target ocular spherical aberration between 0.07 μm and 0.10 μm should be considered to be the best compromise between subjective depth of focus and objective contrast sensitivity.</description><subject>Ophthalmology</subject><issn>1755-375X</issn><issn>1755-3768</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqNUFFLwzAQDqLgnP4GC_rammsuTSKCjOFUGOxhCr6FrEuwpTYz3XD79zZU9uy93MfxfXf3fYRcA82gr7s6A8F5ykQhs5wCy3LBMNufkNFxfnrE_OOcXHRdTWkBRYEjcrvcfNpQlaZJzMqGYLaVb--TWahsu058SJy3j5fkzJmms1d_fUzeZ09v05d0vnh-nU7maQlCYorMWEoFSsUQHe-fE8DVCtZIaYnOcAG0sFIpY3OuLEBZMBAI6BBzVIKNyc2wdxP89852W137XWj7kxqQS46SKdWzxMAqg--6YJ3ehOrLhIMGqmMkutbRro7WdYxEx0j0vlc-DMqfqrGH_8r0ZLGMiP0CdtJjBQ</recordid><startdate>201308</startdate><enddate>201308</enddate><creator>VANDERMEER, G</creator><creator>NOCHEZ, Y</creator><creator>PISELLA, PJ</creator><general>Blackwell Publishing Ltd</general><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TK</scope></search><sort><creationdate>201308</creationdate><title>Spherical aberration: Friend or foe?</title><author>VANDERMEER, G ; NOCHEZ, Y ; PISELLA, PJ</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1784-43ae007489344f51117159b1d400c4fa57106e899ae259e11c6317414f4424973</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Ophthalmology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>VANDERMEER, G</creatorcontrib><creatorcontrib>NOCHEZ, Y</creatorcontrib><creatorcontrib>PISELLA, PJ</creatorcontrib><collection>CrossRef</collection><collection>Neurosciences Abstracts</collection><jtitle>Acta ophthalmologica (Oxford, England)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>VANDERMEER, G</au><au>NOCHEZ, Y</au><au>PISELLA, PJ</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spherical aberration: Friend or foe?</atitle><jtitle>Acta ophthalmologica (Oxford, England)</jtitle><date>2013-08</date><risdate>2013</risdate><volume>91</volume><issue>s252</issue><spage>0</spage><epage>0</epage><pages>0-0</pages><issn>1755-375X</issn><eissn>1755-3768</eissn><abstract>To determine the level of residual spherical aberration that gives the best objective and subjective quality of image after cataract surgery with intraocular lens (IOL) implantation. Six months after microincision (1.8 mm) cataract surgery with aspheric IOL implantation, total aberrations were computed using a Wavescan aberrometer. The modulation transfer function (MTF), Strehl ratio, and objective index of scattering were measured using the Objective Quality Analysis System. Objective depth of focus was computed as the focus range at which the Strehl ratio did not fall below 50% of maximum. Subjective depth of focus was calculated as the difference between the vergence of the punctum remotum and that of the punctum proximum. Thirty patients (54 eyes) were evaluated. The MTF cutoff values were higher with decreasing total ocular spherical aberration (r = 0.56; P<.05). Objective and subjective depth of focus were positively correlated with total spherical aberration (r = 0.26 and r = 0.46, respectively; P<.05). A final spherical aberration of zero obtained by compensation of IOL asphericity gave the greatest improvement in objective quality of vision and better MTF contrast. However, a final target ocular spherical aberration between 0.07 μm and 0.10 μm should be considered to be the best compromise between subjective depth of focus and objective contrast sensitivity.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1755-3768.2013.2734.x</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Ophthalmology |
| title | Spherical aberration: Friend or foe? |
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