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Zhu, ManMan; Xin, Yue; Vinciguerra, Riccardo; Wang, Zheng; Warsame, Abdullahi Mohamud; Wang, Chong; Zhu, DaTian; Qu, ZhanXin; Wang, Pu; Zheng, XiaoBo; Wang, JunJie; Wang, QinMei; Ye, YuFeng; Chen, ShiHao; Bao, FangJun; Elsheikh, Ahmed
Journal of refractive surgery (1995) 39, Številka: 3Journal Article
To investigate corneal epithelial thickness changes during a 6-month follow-up period after transepithelial photorefractive keratectomy (tPRK), femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK), and small incision lenticule extraction (SMILE). This prospective study included 76 eyes of 76 participants who underwent myopic refractive surgery (23 FS-LASIK, 22 SMILE, and 31 tPRK). Epithelial thickness and anterior curvature were averaged over 4 regions (subdivided into 25 areas) and measured by spectral-domain optical coherence tomography and Scheimpflug tomography before the operation (pre) and at 1 or 3 days (pos1-3d), 1 week (pos1w), and 1 month (pos1m), 3 months (pos3m), and 6 months (pos6m) postoperatively. The epithelial thickness of the three groups was similar in both the pre and pos6m (all > .05), but the tPRK group fluctuated the most during the follow-up period. The largest increase was in the inferior-temporal paracentral area (7.25 ± 2.58 μm for FS-LASIK; 5.79 ± 2.41 μm for SMILE; 4.88 ± 5.84 μm for tPRK; all < .001). Only the epithelial thickness of tPRK increased from pos3m to pos6m ( < .05), whereas all changes for FS-LASIK and SMILE were not significant ( > .05). A positive correlation of thickness changes with curvature gradient in the paracentral region of tPRK was found ( = 0.549, = .018), but not in other regions in all groups. Epithelial remodeling followed different trends after different surgeries from the early postoperative stage onward, but exhibited similar values at pos6m. Although remodeling after FS-LASIK and SMILE stabilized by pos3m, it remained unstable at pos6m after tPRK. These changes may affect corneal profile and lead to deviation from the intended surgical outcome. .
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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