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The objective is to give a method to estimate the tilt and decentration of IOL more accurately. Based on AS-OCT images of twelve eyes from eight cases with subluxation lens after operation, we fitted spherical equation to the data obtained from the images of the anterior and posterior surfaces of the IOL. By the established relationship between IOL tilt (decentration) and the scanned angle, at which a piece of AS-OCT image was taken by the instrument, the IOL tilt and decentration were calculated. IOL tilt angle and decentration of each subject were given. Moreover, the horizontal and vertical tilt was also obtained. Accordingly, the possible errors of IOL tilt and decentration existed in the method employed by AS-OCT instrument. Based on 6\u201312 pieces of AS-OCT images at different directions, the tilt angle and decentration values were shown, respectively. The method of the surface fitting to the IOL surface can accurately analyze the IOL\u2019s location, and six pieces of AS-OCT images at three pairs symmetrical directions are enough to get tilt angle and decentration value of IOL more precisely.<\/jats:p>","DOI":"10.1155\/2013\/572530","type":"journal-article","created":{"date-parts":[[2013,7,14]],"date-time":"2013-07-14T17:02:11Z","timestamp":1373821331000},"page":"1-7","source":"Crossref","is-referenced-by-count":14,"title":["Research on Calculation of the IOL Tilt and Decentration Based on Surface Fitting"],"prefix":"10.1155","volume":"2013","author":[{"given":"Lin","family":"Li","sequence":"first","affiliation":[{"name":"School of Biomedical Engineering, Capital Medical University, Beijing 100069, China"}]},{"given":"Ke","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Biomedical Engineering, Capital Medical University, Beijing 100069, China"}]},{"given":"Yan","family":"Yan","sequence":"additional","affiliation":[{"name":"School of Biomedical Engineering, Capital Medical University, Beijing 100069, China"}]},{"given":"Xudong","family":"Song","sequence":"additional","affiliation":[{"name":"Beijing Tongren Hospital Affiliated to Capital Medical University, Beijing 100730, China"}]},{"given":"Zhicheng","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Biomedical Engineering, Capital Medical University, Beijing 100069, China"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2006.01.041"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2011.03.006"},{"key":"3","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2004.02.072"},{"issue":"10","key":"4","doi-asserted-by":"crossref","first-page":"1259","DOI":"10.1016\/S0161-6420(90)32422-3","volume":"97","year":"1990","journal-title":"Ophthalmology"},{"key":"5","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2008.09.028"},{"issue":"11","key":"6","first-page":"1232","volume":"28","year":"2010","journal-title":"Chinese Journal of Practical Ophthalmology"},{"key":"7","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2010.03.043"},{"key":"8","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2011.04.035"},{"key":"9","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2007.01.021"},{"key":"10","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2006.10.054"},{"issue":"4","key":"11","first-page":"252","volume":"10","year":"2008","journal-title":"Chinese Joumal of OptometR)R & 0phthalmology"},{"key":"12","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2006.08.033"},{"key":"13","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajo.2010.09.013"},{"key":"14","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2009.12.038"},{"issue":"2","key":"15","first-page":"119","volume":"22","year":"2006","journal-title":"Eye Science"},{"key":"16","doi-asserted-by":"publisher","DOI":"10.3760\/cma.j.issn.04124081.2010.04.011"},{"key":"17","doi-asserted-by":"publisher","DOI":"10.1016\/j.ophtha.2007.06.020"},{"key":"18","doi-asserted-by":"publisher","DOI":"10.1016\/S0886-3350(99)80019-4"},{"key":"19","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajo.2010.09.013"},{"issue":"6","key":"20","first-page":"615","volume":"28","year":"2010","journal-title":"Journal of Practical Ophthalmology"},{"key":"21","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2009.01.023"}],"container-title":["Computational and Mathematical Methods in Medicine"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/cmmm\/2013\/572530.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/cmmm\/2013\/572530.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/cmmm\/2013\/572530.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2017,6,21]],"date-time":"2017-06-21T12:15:05Z","timestamp":1498047305000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.hindawi.com\/journals\/cmmm\/2013\/572530\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013]]},"references-count":21,"alternative-id":["572530","572530"],"URL":"https:\/\/doi.org\/10.1155\/2013\/572530","relation":{},"ISSN":["1748-670X","1748-6718"],"issn-type":[{"value":"1748-670X","type":"print"},{"value":"1748-6718","type":"electronic"}],"subject":[],"published":{"date-parts":[[2013]]}}}