{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,15]],"date-time":"2026-08-15T02:07:29Z","timestamp":1786759649548,"version":"build-2736575974"},"reference-count":34,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"6","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2024,6]]},"abstract":"\n Purpose:<\/jats:title>\n To evaluate regional changes in the posterior corneal elevation after three laser refractive surgeries for correction of myopia of different degrees.<\/jats:p>\n <\/jats:sec>\n \n Settings and Design:<\/jats:title>\n Retrospective, comparative, and non-randomized study.<\/jats:p>\n <\/jats:sec>\n \n Methods:<\/jats:title>\n Two hundred patients (200 eyes) who underwent laser epithelial keratoplasty (LASEK), femtosecond-assisted laser in-situ keratomileusis (FS-LASIK), and small-incision lenticule extraction (SMILE) were included in this study. According to preoperative spherical equivalent (SE), each surgical group was divided into two refractive subgroups: low-to-moderate myopia (LM group) and high myopia (H group). The posterior corneal elevation from Pentacam Scheimpflug tomography was analyzed preoperatively and at 1 month, 3 months, 6 months, and 12 months postoperatively. Three subregions of the posterior cornea were divided in this study as the central, paracentral, and peripheral regions.<\/jats:p>\n <\/jats:sec>\n \n Statistical Analysis Used:<\/jats:title>\n Generalized Estimating Equations (GEE).<\/jats:p>\n <\/jats:sec>\n \n Results:<\/jats:title>\n \n For all three surgical groups, similar changing trends were seen in the two refractive subgroups. H group presented a larger changing magnitude than the LM group in FS-LASIK over time (\n P<\/jats:italic>\n < 0.05), whereas no significant difference was noted in the two refractive subgroups of LASEK or SMILE (\n P<\/jats:italic>\n > 0.05). At 12 months postoperatively, the central posterior corneal elevation returned to the preoperative level in LASEK (\n P<\/jats:italic>\n > 0.05) but shifted forward significantly in FS-LASIK and SMILE (\n P<\/jats:italic>\n < 0.05).\n <\/jats:p>\n <\/jats:sec>\n \n Conclusion:<\/jats:title>\n Different posterior corneal regions respond differently to corneal refractive surgeries. LASEK, FS-LASIK, and SMILE demonstrate different trends in the regional changes in posterior corneal elevation. The corneal shape seems more stable in LASEK than in FS-LASIK and SMILE.<\/jats:p>\n <\/jats:sec>","DOI":"10.4103\/ijo.ijo_2127_23","type":"journal-article","created":{"date-parts":[[2024,2,6]],"date-time":"2024-02-06T01:00:30Z","timestamp":1707181230000},"page":"824-830","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":4,"title":["Regional analysis of posterior corneal elevation after laser refractive surgeries for correction of myopia of different degrees"],"prefix":"10.4103","volume":"72","author":[{"given":"Tong","family":"Chen","sequence":"first","affiliation":[{"name":"Eye Institute of Shandong First Medical University, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), China"},{"name":"State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, China"},{"name":"School of Ophthalmology, Shandong First Medical University, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Na","family":"Li","sequence":"additional","affiliation":[{"name":"Eye Institute of Shandong First Medical University, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), China"},{"name":"State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, China"},{"name":"School of Ophthalmology, Shandong First Medical University, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tian","family":"Ge","sequence":"additional","affiliation":[{"name":"Eye Institute of Shandong First Medical University, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), China"},{"name":"State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, China"},{"name":"School of Ophthalmology, Shandong First Medical University, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yue","family":"Lin","sequence":"additional","affiliation":[{"name":"Eye Institute of Shandong First Medical University, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), China"},{"name":"State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, China"},{"name":"School of Ophthalmology, Shandong First Medical University, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaohui","family":"Wu","sequence":"additional","affiliation":[{"name":"Eye Institute of Shandong First Medical University, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), China"},{"name":"State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, China"},{"name":"School of Ophthalmology, Shandong First Medical University, 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