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Changes in corneal biomechanics after small incision lenticule extraction and femtosecond laser-assisted laser in situ keratomileusis evaluated by corneal visualization Scheimpflug technology

Changes in corneal biomechanics after small incision lenticule extraction and femtosecond laser-assisted laser in situ keratomileusis evaluated by corneal visualization Scheimpflug technology

Authors :
Wen-Jing Li
Yang Liu
Zheng-Lai Wang
Jin-Jin Zhang
Zhen Ma
Ling-Jie Zhou
Bo Cai
Wen-Juan Zhuang
Source :
Guoji Yanke Zazhi, Vol 23, Iss 11, Pp 1793-1797 (2023)
Publication Year :
2023
Publisher :
Press of International Journal of Ophthalmology (IJO PRESS), 2023.

Abstract

AIM:To evaluate the changes in corneal biomechanics of patients with moderate refractive error after receiving small-incision lenticule extraction(SMILE)and femtosecond laser-assisted laser in situ keratomileusis(FS-LASIK)using the corneal visualization Scheimpflug technology(Corvis ST).METHODS:Prospective cohort study. A total of 65 moderate myopia patients(65 eyes)who were scheduled to undergo refractive surgery at the Ophthalmic Refractive Surgery Center of the Ningxia Eye Hospital from November 2020 to November 2021 were included in the study, and there were 30 eyes in the SMILE group and 35 eyes in the FS-LASIK group. The changes in corneal biomechanical parameters, including integrated radius(IR), inverse concave radius(ICR), deformation amplitude ratio 2mm(DAR2), stiffness parameter at first applanation(SP-A1), ambrosio relational thickness(ARTh)and the central curvature radius at highest concavity(HC-Radius)were observed by Corvis ST between both groups preoperatively and 1 and 3mo postoperatively.RESULTS: There were no statistical significance in biomechanical parameters between two groups of patients 1 and 3mo postoperatively(P>0.05). IR, ICR and DAR2 of each groups of patients 1 and 3mo postoperatively were significantly increased than those preoperatively, and SP-A1, ARTh and HC-Radius were significantly decreased than those preoperatively(all P0.05). In addition, a positive correlation was found between central corneal thickness(CCT)and ARTh and SP-A1 of the two groups of patients at 3mo postoperatively(FS-LASIK group: r=0.727, 0.819, SMLIE group: r=0.683, 0.434, all P

Details

Language :
English
ISSN :
16725123
Volume :
23
Issue :
11
Database :
Directory of Open Access Journals
Journal :
Guoji Yanke Zazhi
Publication Type :
Academic Journal
Accession number :
edsdoj.1398b508904c83a565c8868e78d909
Document Type :
article
Full Text :
https://doi.org/10.3980/j.issn.1672-5123.2023.11.05