{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,23]],"date-time":"2026-04-23T00:30:21Z","timestamp":1776904221917,"version":"3.51.2"},"reference-count":29,"publisher":"Wiley","license":[{"start":{"date-parts":[[2017,1,1]],"date-time":"2017-01-01T00:00:00Z","timestamp":1483228800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Ophthalmology"],"published-print":{"date-parts":[[2017]]},"abstract":"<jats:p><jats:italic>Background<\/jats:italic>. To evaluate the change in corneal astigmatism after intrastromal corneal ring segment (ICRS) implantation in keratoconus patients with previous deep anterior lamellar keratoplasty (DALK). Design was a longitudinal, retrospective, interventional study. The study included 25 eyes of 24 patients with keratoconus who had DALK performed at least two years prior to ICRS implantation. All patients had a clear corneal graft with up to 8.00\u2009D of corneal astigmatism and intolerance to contact lenses. The studied parameters were age, sex, corrected distance visual acuity (CDVA), maximum keratometry (K1), minimum keratometry (K2), spherical equivalent, and astigmatism. There was a statistically significant decrease in the postintervention analysis as follows: 3.5\u2009D reduction in K1 (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\"><mml:mi>p<\/mml:mi><mml:mo>&lt;<\/mml:mo><mml:mn>0.001<\/mml:mn><\/mml:math>); 1.53\u2009D in K2 (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M2\"><mml:mi>p<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn>0.005<\/mml:mn><\/mml:math>); and 2.52\u2009D (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M3\"><mml:mi>p<\/mml:mi><mml:mo>&lt;<\/mml:mo><mml:mn>0.001<\/mml:mn><\/mml:math>) in the average <jats:italic>K<\/jats:italic>. The spherical equivalent reduced from \u22123.67\u2009D (\u00b12.74) to \u22120.71\u2009D (\u00b12.35) (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M4\"><mml:mi>p<\/mml:mi><mml:mo>&lt;<\/mml:mo><mml:mn>0.001<\/mml:mn><\/mml:math>). The topographic astigmatism reduced from 3.87\u2009D preoperatively to 1.90\u2009D postoperatively (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M5\"><mml:mi>p<\/mml:mi><mml:mo>&lt;<\/mml:mo><mml:mn>0.001<\/mml:mn><\/mml:math>). The CDVA improved from 0.33 (\u00b10.10) to 0.20 (\u00b10.09, <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M6\"><mml:mi>p<\/mml:mi><mml:mo>&lt;<\/mml:mo><mml:mn>0.001<\/mml:mn><\/mml:math>). ICRS implantation is a useful option for the correction of astigmatism after DALK as it yields significant visual, topographic, and refractive results.<\/jats:p>","DOI":"10.1155\/2017\/8689017","type":"journal-article","created":{"date-parts":[[2017,8,29]],"date-time":"2017-08-29T17:02:08Z","timestamp":1504026128000},"page":"1-7","source":"Crossref","is-referenced-by-count":22,"title":["Intrastromal Corneal Ring Segments for Astigmatism Correction after Deep Anterior Lamellar Keratoplasty"],"prefix":"10.1155","volume":"2017","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6846-9137","authenticated-orcid":true,"given":"J\u00falio C. D.","family":"Arantes","sequence":"first","affiliation":[{"name":"Center of Reference in Ophthalmology, Federal University of Goi\u00e1s, Goi\u00e2nia, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sandro","family":"Coscarelli","sequence":"additional","affiliation":[{"name":"Ennio Coscarelli Eye Clinic, Belo Horizonte, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paulo","family":"Ferrara","sequence":"additional","affiliation":[{"name":"Paulo Ferrara Eye Clinic, Belo Horizonte, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luana P. N.","family":"Ara\u00fajo","sequence":"additional","affiliation":[{"name":"Altino Ventura Foundation, Recife, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marcos","family":"\u00c1vila","sequence":"additional","affiliation":[{"name":"Center of Reference in Ophthalmology, Federal University of Goi\u00e1s, Goi\u00e2nia, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leonardo","family":"Torquetti","sequence":"additional","affiliation":[{"name":"Center of Excellence in Ophthalmology, Par\u00e1 de Minas, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1001\/archophthalmol.2011.23"},{"key":"2","doi-asserted-by":"crossref","first-page":"297","DOI":"10.1016\/S0039-6257(97)00119-7","volume":"42","year":"1998","journal-title":"Survey of Ophthalmology"},{"key":"3","doi-asserted-by":"publisher","DOI":"10.1097\/ICL.0000000000000169"},{"key":"4","doi-asserted-by":"publisher","DOI":"10.1111\/j.1442-9071.2011.02698.x"},{"key":"5","doi-asserted-by":"crossref","first-page":"22","DOI":"10.3928\/1081597X-20131217-02","volume":"30","year":"2014","journal-title":"Journal of Refractive Surgery"},{"key":"6","doi-asserted-by":"publisher","DOI":"10.1016\/j.survophthal.2015.02.004"},{"key":"7","doi-asserted-by":"publisher","DOI":"10.1016\/j.oftal.2014.07.011"},{"key":"8","doi-asserted-by":"publisher","DOI":"10.1016\/j.oftal.2014.11.008"},{"key":"9","doi-asserted-by":"publisher","DOI":"10.1002\/14651858.CD009700.pub2"},{"key":"10","doi-asserted-by":"publisher","DOI":"10.1016\/j.ophtha.2006.01.006"},{"issue":"3","key":"11","doi-asserted-by":"crossref","first-page":"398","DOI":"10.1016\/S0886-3350(01)01181-6","volume":"28","year":"2002","journal-title":"Journal of Cataract & Refractive Surgery"},{"key":"12","doi-asserted-by":"publisher","DOI":"10.5301\/ejo.5000702"},{"key":"13","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2013.04.038"},{"key":"14","doi-asserted-by":"publisher","DOI":"10.3928\/1081597X-20101001-02"},{"key":"15","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2011.12.037"},{"key":"16","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1590\/S0004-27492012000100004","volume":"75","year":"2012","journal-title":"Arquivos Brasileiros de Oftalmologia"},{"key":"17","doi-asserted-by":"publisher","DOI":"10.1111\/ceo.13017"},{"key":"18","first-page":"123","volume":"72","year":"1974","journal-title":"Transactions of the American Ophtalmologic"},{"issue":"5","key":"19","first-page":"511","volume":"5","year":"1985","journal-title":"American Journal of Ophtalmology"},{"key":"20","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1097\/00004397-196606010-00004","volume":"6","year":"1966","journal-title":"International Ophthalmology Clinics"},{"key":"21","doi-asserted-by":"publisher","DOI":"10.1016\/S0886-3350(00)00642-8"},{"key":"22","doi-asserted-by":"publisher","DOI":"10.1016\/S0161-6420(99)90410-4"},{"issue":"3","key":"23","doi-asserted-by":"crossref","first-page":"243","DOI":"10.1097\/00003226-200404000-00005","volume":"23","year":"2004","journal-title":"Cornea"},{"key":"24","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2003.12.059"},{"key":"25","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2008.11.061"},{"key":"26","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2009.04.045"},{"key":"27","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2009.05.060"},{"key":"28","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2007.04.021"},{"key":"29","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2008.05.028"}],"container-title":["Journal of Ophthalmology"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/joph\/2017\/8689017.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/joph\/2017\/8689017.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/joph\/2017\/8689017.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2017,8,29]],"date-time":"2017-08-29T17:02:10Z","timestamp":1504026130000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.hindawi.com\/journals\/joph\/2017\/8689017\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017]]},"references-count":29,"alternative-id":["8689017","8689017"],"URL":"https:\/\/doi.org\/10.1155\/2017\/8689017","relation":{},"ISSN":["2090-004X","2090-0058"],"issn-type":[{"value":"2090-004X","type":"print"},{"value":"2090-0058","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017]]}}}