Effect of intracorneal ring segments on posterior corneal topography in eyes with keratoconus
PURPOSETo analyze the changes in the anterior and posterior corneal surfaces measured with a Scheimpflug imaging device in keratoconus patients implanted with intracorneal ring segments (ICRS) and to correlate those changes with the visual outcomes. METHODSThis prospective interventional case series...
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| Veröffentlicht in: | Archivos de la Sociedad Española de Oftalmología (English ed.) 2022-08, Vol.97 (8), p.424-431 |
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| container_title | Archivos de la Sociedad Española de Oftalmología (English ed.) |
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| creator | Berty, M.M. Eliwa, T.F. Gaafar, A.A.M. Mousa, A.S. |
| description | PURPOSETo analyze the changes in the anterior and posterior corneal surfaces measured with a Scheimpflug imaging device in keratoconus patients implanted with intracorneal ring segments (ICRS) and to correlate those changes with the visual outcomes. METHODSThis prospective interventional case series study included 92 eyes of 60 patients with keratoconus who underwent Kerarings (Mediphacos, Belo Horizonte, Brazil) ICRS implantation. Keratometric (K) readings, corneal asphericity (Q value) and elevations of both anterior and posterior corneal surfaces were evaluated using a Scheimpflug imaging device preoperatively and at 1, 3, 6 and 12 months after surgery. RESULTSThe mean best corrected visual acuity (BCVA) improved from 0.61 to 0.19 logMAR at 12 months after surgery. Both anterior and posterior corneal surfaces showed significant flattening with statistically significant reduction of the mean anterior K reading by 3.39 D and the mean posterior K reading by 0.39 D (p |
| doi_str_mv | 10.1016/j.oftale.2022.05.005 |
| format | Article |
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METHODSThis prospective interventional case series study included 92 eyes of 60 patients with keratoconus who underwent Kerarings (Mediphacos, Belo Horizonte, Brazil) ICRS implantation. Keratometric (K) readings, corneal asphericity (Q value) and elevations of both anterior and posterior corneal surfaces were evaluated using a Scheimpflug imaging device preoperatively and at 1, 3, 6 and 12 months after surgery. RESULTSThe mean best corrected visual acuity (BCVA) improved from 0.61 to 0.19 logMAR at 12 months after surgery. Both anterior and posterior corneal surfaces showed significant flattening with statistically significant reduction of the mean anterior K reading by 3.39 D and the mean posterior K reading by 0.39 D (p<0.001) at 12 months. Statistically significant change of the anterior Q to a less negative value (from -1.05 to -0.36) was observed (p<0.001) with no significant change of the posterior Q value. Improvement of the anterior Q was significantly correlated to better postoperative BCVA (p=0.03). Better postoperative BCVA significantly correlated to better preoperative BCVA, flatter preoperative anterior and posterior K, less prolate anterior Q value and lower anterior elevations. CONCLUSIONSICRS implantation has a significant flattening effect on both anterior and posterior corneal surfaces. Improvement of corneal asphericity is correlated to better visual outcome. Certain preoperative parameters were predictive factors of the postoperative visual improvement.</description><identifier>ISSN: 2173-5794</identifier><identifier>EISSN: 2173-5794</identifier><identifier>DOI: 10.1016/j.oftale.2022.05.005</identifier><language>eng</language><ispartof>Archivos de la Sociedad Española de Oftalmología (English ed.), 2022-08, Vol.97 (8), p.424-431</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c1295-9d6945f758d25cf7f1ee5e2e2b3d800262b1b59f600ca072006f20c8e72b996c3</citedby><cites>FETCH-LOGICAL-c1295-9d6945f758d25cf7f1ee5e2e2b3d800262b1b59f600ca072006f20c8e72b996c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Berty, M.M.</creatorcontrib><creatorcontrib>Eliwa, T.F.</creatorcontrib><creatorcontrib>Gaafar, A.A.M.</creatorcontrib><creatorcontrib>Mousa, A.S.</creatorcontrib><title>Effect of intracorneal ring segments on posterior corneal topography in eyes with keratoconus</title><title>Archivos de la Sociedad Española de Oftalmología (English ed.)</title><description>PURPOSETo analyze the changes in the anterior and posterior corneal surfaces measured with a Scheimpflug imaging device in keratoconus patients implanted with intracorneal ring segments (ICRS) and to correlate those changes with the visual outcomes. METHODSThis prospective interventional case series study included 92 eyes of 60 patients with keratoconus who underwent Kerarings (Mediphacos, Belo Horizonte, Brazil) ICRS implantation. Keratometric (K) readings, corneal asphericity (Q value) and elevations of both anterior and posterior corneal surfaces were evaluated using a Scheimpflug imaging device preoperatively and at 1, 3, 6 and 12 months after surgery. RESULTSThe mean best corrected visual acuity (BCVA) improved from 0.61 to 0.19 logMAR at 12 months after surgery. Both anterior and posterior corneal surfaces showed significant flattening with statistically significant reduction of the mean anterior K reading by 3.39 D and the mean posterior K reading by 0.39 D (p<0.001) at 12 months. Statistically significant change of the anterior Q to a less negative value (from -1.05 to -0.36) was observed (p<0.001) with no significant change of the posterior Q value. Improvement of the anterior Q was significantly correlated to better postoperative BCVA (p=0.03). Better postoperative BCVA significantly correlated to better preoperative BCVA, flatter preoperative anterior and posterior K, less prolate anterior Q value and lower anterior elevations. CONCLUSIONSICRS implantation has a significant flattening effect on both anterior and posterior corneal surfaces. Improvement of corneal asphericity is correlated to better visual outcome. Certain preoperative parameters were predictive factors of the postoperative visual improvement.</description><issn>2173-5794</issn><issn>2173-5794</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNpNkD1PwzAURS0EElXpP2DwyJLwbNdOPKKqfEiVWGBEluM-tylpHGxXqP-eVAWJt9w3nHuHQ8gtg5IBU_e7MvhsOyw5cF6CLAHkBZlwVolCVnp--e-_JrOUdjBezaWuxYR8LL1Hl2nwtO1ztC7EHm1HY9tvaMLNHvucaOjpEFLG2IZI_5AchrCJdtgexyrFIyb63eYt_cRoc3ChP6QbcuVtl3D2m1Py_rh8WzwXq9enl8XDqnCMa1notdJz6StZr7l0vvIMUSJH3oh1DcAVb1gjtVcAzkLFAZTn4GqseKO1cmJK7s67QwxfB0zZ7NvksOtsj-GQDFc1A6GEliM6P6MuhpQiejPEdm_j0TAwJ6FmZ85CzUmoAWlGoeIHem9sPg</recordid><startdate>202208</startdate><enddate>202208</enddate><creator>Berty, M.M.</creator><creator>Eliwa, T.F.</creator><creator>Gaafar, A.A.M.</creator><creator>Mousa, A.S.</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>202208</creationdate><title>Effect of intracorneal ring segments on posterior corneal topography in eyes with keratoconus</title><author>Berty, M.M. ; Eliwa, T.F. ; Gaafar, A.A.M. ; Mousa, A.S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1295-9d6945f758d25cf7f1ee5e2e2b3d800262b1b59f600ca072006f20c8e72b996c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Berty, M.M.</creatorcontrib><creatorcontrib>Eliwa, T.F.</creatorcontrib><creatorcontrib>Gaafar, A.A.M.</creatorcontrib><creatorcontrib>Mousa, A.S.</creatorcontrib><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Archivos de la Sociedad Española de Oftalmología (English ed.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Berty, M.M.</au><au>Eliwa, T.F.</au><au>Gaafar, A.A.M.</au><au>Mousa, A.S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of intracorneal ring segments on posterior corneal topography in eyes with keratoconus</atitle><jtitle>Archivos de la Sociedad Española de Oftalmología (English ed.)</jtitle><date>2022-08</date><risdate>2022</risdate><volume>97</volume><issue>8</issue><spage>424</spage><epage>431</epage><pages>424-431</pages><issn>2173-5794</issn><eissn>2173-5794</eissn><abstract>PURPOSETo analyze the changes in the anterior and posterior corneal surfaces measured with a Scheimpflug imaging device in keratoconus patients implanted with intracorneal ring segments (ICRS) and to correlate those changes with the visual outcomes. METHODSThis prospective interventional case series study included 92 eyes of 60 patients with keratoconus who underwent Kerarings (Mediphacos, Belo Horizonte, Brazil) ICRS implantation. Keratometric (K) readings, corneal asphericity (Q value) and elevations of both anterior and posterior corneal surfaces were evaluated using a Scheimpflug imaging device preoperatively and at 1, 3, 6 and 12 months after surgery. RESULTSThe mean best corrected visual acuity (BCVA) improved from 0.61 to 0.19 logMAR at 12 months after surgery. Both anterior and posterior corneal surfaces showed significant flattening with statistically significant reduction of the mean anterior K reading by 3.39 D and the mean posterior K reading by 0.39 D (p<0.001) at 12 months. Statistically significant change of the anterior Q to a less negative value (from -1.05 to -0.36) was observed (p<0.001) with no significant change of the posterior Q value. Improvement of the anterior Q was significantly correlated to better postoperative BCVA (p=0.03). Better postoperative BCVA significantly correlated to better preoperative BCVA, flatter preoperative anterior and posterior K, less prolate anterior Q value and lower anterior elevations. CONCLUSIONSICRS implantation has a significant flattening effect on both anterior and posterior corneal surfaces. Improvement of corneal asphericity is correlated to better visual outcome. Certain preoperative parameters were predictive factors of the postoperative visual improvement.</abstract><doi>10.1016/j.oftale.2022.05.005</doi><tpages>8</tpages></addata></record> |
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| source | Alma/SFX Local Collection |
| title | Effect of intracorneal ring segments on posterior corneal topography in eyes with keratoconus |
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