PMID- 36153757 OWN - NLM STAT- MEDLINE DCOM- 20230329 LR - 20230329 IS - 1573-2630 (Electronic) IS - 0165-5701 (Linking) VI - 43 IP - 3 DP - 2023 Mar TI - In vivo confocal microscopy of sub-basal corneal nerves and corneal densitometry after three kinds of refractive procedures for high myopia. PG - 925-935 LID - 10.1007/s10792-022-02494-0 [doi] AB - PURPOSE: To observe corneal nerve fibers and densitometry after small incision lenticule extraction (SMILE), femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) and laser-assisted subepithelial keratomileusis (LASEK) for high myopia. METHODS: This is a prospective, cross-sectional research study. Patients with high myopia (equivalent spherical lens: -6.00 and -11.00D) who underwent laser corneal refractive surgery were divided into three groups: SMILE, FS-LASIK and LASEK. Scheimpflug imaging of corneal nerves in five areas was observed by confocal microscopy before and 6, 12 months after surgery. Corneal densitometry was measured by Pentacam anterior segment analysis system. RESULTS: Overall, 59 patients were enrolled. The nerve density in the central area did not recover to the preoperative level in three groups until 12 months. The density and length of corneal nerves in central and lower area were better in the SMILE group 6 months postoperatively (p = 0.01), while nerve density did not differ significantly among three groups 12 months postoperatively (p = 0.18). Nerve fibers in central and temporal region were wider in LASEK than that in other two groups at 6- and 12-month follow-up. Corneal densitometry in the central 6 mm diameter was significantly higher in the LASEK group compared with other two groups 6 months postoperatively (p = 0.04). Twelve months postoperatively, corneal densitometry in range of all zone was lower in SMILE than in FS-LASIK and LASEK (p = 0.01, 0.03, 0.04). CONCLUSIONS: Compared with FS-LASIK and LASEK, SMILE-treated eyes with high myopia had certain advantages in nerve density, length and nerve connection way and had better corneal transparency after operation. CI - (c) 2022. The Author(s), under exclusive licence to Springer Nature B.V. FAU - Hou, Chenting AU - Hou C AD - Department of Ophthalmology, The Affiliated Hospital of Qingdao University, No.16 Jiangsu Road, Qingdao, 266000, Shandong Province, China. FAU - Li, Jiangfeng AU - Li J AD - Department of Ophthalmology, The Affiliated Hospital of Qingdao University, No.16 Jiangsu Road, Qingdao, 266000, Shandong Province, China. AD - Affiliated Aier Eye Hospital of Jinan University, Shenzhen, Guangzhou Province, China. FAU - Li, Jinjian AU - Li J AD - Department of Ophthalmology, The Affiliated Hospital of Qingdao University, No.16 Jiangsu Road, Qingdao, 266000, Shandong Province, China. FAU - Peng, Hui AU - Peng H AD - Department of Ophthalmology, The Affiliated Hospital of Qingdao University, No.16 Jiangsu Road, Qingdao, 266000, Shandong Province, China. FAU - Wang, Qing AU - Wang Q AUID- ORCID: 0000-0003-1341-6104 AD - Department of Ophthalmology, The Affiliated Hospital of Qingdao University, No.16 Jiangsu Road, Qingdao, 266000, Shandong Province, China. wangqing6836@sina.com. LA - eng GR - ZR2019MH115/Natural Science Foundation of Shandong Province/ PT - Journal Article DEP - 20220925 PL - Netherlands TA - Int Ophthalmol JT - International ophthalmology JID - 7904294 SB - IM MH - Humans MH - Corneal Stroma/surgery MH - Prospective Studies MH - Cross-Sectional Studies MH - Visual Acuity MH - Lasers, Excimer MH - Cornea/surgery MH - *Keratomileusis, Laser In Situ/methods MH - *Myopia/diagnosis/surgery MH - Microscopy, Confocal MH - Densitometry OTO - NOTNLM OT - Corneal nerve OT - Densitometry OT - High myopia OT - In vivo confocal microscope OT - Laser corneal refractive surgery EDAT- 2022/09/26 06:00 MHDA- 2023/03/29 06:05 CRDT- 2022/09/25 13:54 PHST- 2021/12/11 00:00 [received] PHST- 2022/08/20 00:00 [accepted] PHST- 2023/03/29 06:05 [medline] PHST- 2022/09/26 06:00 [pubmed] PHST- 2022/09/25 13:54 [entrez] AID - 10.1007/s10792-022-02494-0 [pii] AID - 10.1007/s10792-022-02494-0 [doi] PST - ppublish SO - Int Ophthalmol. 2023 Mar;43(3):925-935. doi: 10.1007/s10792-022-02494-0. Epub 2022 Sep 25.