Repeatability and reproducibility of corneal higher-order aberrations measurements after small incision lenticule extraction using the Scheimpflug-Placido topographer

Rui Ning ¹Rongrong Gao ¹David P.Pi?ero ²Jun Zhang ¹Qingyi Gao ¹Yili Jin ¹Yiran Wang ¹Chenxiao Wang ¹Jinhai Huang³

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作者信息

1. Eye Hospital and School of Ophthalmology and Optometry,Wenzhou Medical University,Wenzhou,Zhejiang,China
2. Group of Optics and Visual Perception,Department of Optics,Pharmacology and Anatomy,University of Alicante,Alicante,Spain
3. Eye Institute and Department of Ophthalmology,Eye and ENT Hospital,Fudan University,Shanghai,China;NHC Key Laboratory of Myopia(Fudan University),Key Laboratory of Myopia,Chinese Academy of Medical Sciences,Shanghai,China;Shanghai Research Center of Ophthal-mology and Optometry,Shanghai,China
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Abstract

Background:To evaluate the precision of corneal higher-order aberrations measurements after small incision lentic-ule extraction(SMILE)using the Sirius Scheimpflug-Placido topographer(CSO,Italy).Methods:Seventy-five eyes from 75 postoperative subjects were included in this prospective study.Three con-secutive corneal aberrometric measurements were obtained with the Scheimpflug-Placido topographer by two experienced operators to assess intra-and inter-observer reproducibility.The within-subject standard deviation(Sw),test-retest repeatability(TRT)and the intraclass correlation coefficient(ICC)were calculated.Results:For intraobserver repeatability of anterior and total corneal aberrations,all ICCs were more than 0.922,except for trefoil(0.722 to 0.768).The ICCs of total root mean square(RMS),coma Z(3,±1),and spherical aberration Z(4,0)were over 0.810 while higher-order RMS,trefoil Z(3,±3),and astigmatism ⅡZ(4,±2)were below 0.634 for pos-terior corneal surface aberrations.All Sw values for all types of aberrations were equal to or below 0.07 μm.Regarding interobserver reproducibility,all TRT values were no more than 0.12 μm,0.05 μm,and 0.11 μm for anterior,posterior,and total corneal aberrations,respectively.The ICC values ranged from 0.875 to 0.989,from 0.686 to 0.976 and over 0.834 for anterior,posterior,and total corneal aberrations,respectively.Conclusions:The repeatability of measurements of anterior and total corneal aberrations with the Sirius system in corneas after SMILE surgery was high,except for trefoil.There was some variability in posterior corneal aberrometric measurements.High reproducibility of corneal aberrometric measurements was observed between measurements of both examiners,except for trefoil,with poor to moderate reproducibility.

Key words

Sirius/Higher-order aberrations/Repeatability/Reproducibility/Small incision lenticule extraction

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基金项目

Medical and Health Science and Technology Program of Zhejiang Province(2019KY111)

Foundation of Wenzhou City science & Technology Bureau(Y2020037)

EYE & ENT Hospital of Fudan University HighlevelTalents Program(2021318)

Clinical Research Plan of SHDC(SHDC-2020CR1043B)

出版年

2024

眼视光学杂志(英文版)

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