{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,21]],"date-time":"2026-02-21T03:24:18Z","timestamp":1771644258404,"version":"3.50.1"},"reference-count":8,"publisher":"Elsevier BV","issue":"3","license":[{"start":{"date-parts":[[2007,3,1]],"date-time":"2007-03-01T00:00:00Z","timestamp":1172707200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2007,3,1]],"date-time":"2007-03-01T00:00:00Z","timestamp":1172707200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["ajo.com","clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["American Journal of Ophthalmology"],"published-print":{"date-parts":[[2007,3]]},"DOI":"10.1016\/j.ajo.2006.12.030","type":"journal-article","created":{"date-parts":[[2007,2,21]],"date-time":"2007-02-21T07:16:34Z","timestamp":1172042194000},"page":"500-503","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":23,"title":["Keratoconus: It Is Hard to Define, But \u2026"],"prefix":"10.1016","volume":"143","author":[{"given":"Michael W.","family":"Belin","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stephen S.","family":"Khachikian","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.ajo.2006.12.030_bib1","unstructured":"Jacobellis vs Ohio, 378 U.S. 184, 197 (1964)."},{"key":"10.1016\/j.ajo.2006.12.030_bib2","unstructured":"Roth vs United States, 354 U.S. 476 (1957)."},{"key":"10.1016\/j.ajo.2006.12.030_bib3","doi-asserted-by":"crossref","first-page":"582","DOI":"10.1016\/S0886-3350(99)80060-1","article-title":"Delayed onset keratectasia following laser in situ keratomileusis","volume":"25","author":"Geggel","year":"1999","journal-title":"J Cataract Refract Surg"},{"key":"10.1016\/j.ajo.2006.12.030_bib4","doi-asserted-by":"crossref","first-page":"312","DOI":"10.3928\/1081-597X-19980501-15","article-title":"Iatrogenic keratectasia after laser in situ keratomileusis","volume":"14","author":"Seiler","year":"1998","journal-title":"J Refract Surg"},{"key":"10.1016\/j.ajo.2006.12.030_bib5","doi-asserted-by":"crossref","first-page":"729","DOI":"10.1111\/j.1442-9071.2006.01395.x","article-title":"New devices and clinical implications for measuring corneal thickness","volume":"34","author":"Belin","year":"2006","journal-title":"Clin Experiment Ophthalmol"},{"key":"10.1016\/j.ajo.2006.12.030_bib6","doi-asserted-by":"crossref","first-page":"236","DOI":"10.1097\/00006324-197904000-00004","article-title":"The position of the corneal apex in the normal eye","volume":"56","author":"Tomlinson","year":"1979","journal-title":"Am J Optom Physiol Opt"},{"key":"10.1016\/j.ajo.2006.12.030_bib7","doi-asserted-by":"crossref","first-page":"103","DOI":"10.3928\/1081-597X-19940301-09","article-title":"Characterization of the inherent error in a spherically-biased corneal topography system in mapping a radially aspheric surface","volume":"10","author":"Roberts","year":"1994","journal-title":"J Refract Corneal Surg"},{"key":"10.1016\/j.ajo.2006.12.030_bib8","doi-asserted-by":"crossref","first-page":"156","DOI":"10.1016\/j.jcrs.2004.10.044","article-title":"Determining in vivo biomechanical properties of the cornea with an ocular response analyzer","volume":"31","author":"Luce","year":"2005","journal-title":"J Cataract Refract Surg"}],"container-title":["American Journal of Ophthalmology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002939406014565?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002939406014565?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T12:53:54Z","timestamp":1757595234000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0002939406014565"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2007,3]]},"references-count":8,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2007,3]]}},"alternative-id":["S0002939406014565"],"URL":"https:\/\/doi.org\/10.1016\/j.ajo.2006.12.030","relation":{},"ISSN":["0002-9394"],"issn-type":[{"value":"0002-9394","type":"print"}],"subject":[],"published":{"date-parts":[[2007,3]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Keratoconus: It Is Hard to Define, But \u2026","name":"articletitle","label":"Article Title"},{"value":"American Journal of Ophthalmology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ajo.2006.12.030","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"simple-article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2007 Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}