Repeatability and agreement of wavefront aberrations of a new hybrid topographer and aberrometer in healthy eyes.
Journal
Journal of cataract and refractive surgery
ISSN: 1873-4502
Titre abrégé: J Cataract Refract Surg
Pays: United States
ID NLM: 8604171
Informations de publication
Date de publication:
01 04 2022
01 04 2022
Historique:
received:
11
01
2021
accepted:
06
08
2021
pubmed:
17
8
2021
medline:
31
3
2022
entrez:
16
8
2021
Statut:
ppublish
Résumé
To assess repeatability and agreement of the Pentacam AXL Wave with that of the iTrace aberrometer. Narayana Nethralaya, Bangalore, India. Prospective, cross-sectional study. All eyes of patients underwent 3 sets of measurements at a single visit, using Pentacam AXL Wave and iTrace. Lower-order aberrations (LOAs), higher-order aberrations (HOAs), and coma and spherical aberrations (SAs) were analyzed. Repeatability was assessed using within-subject (Sw) SD, test-retest variability (TRT), Sw coefficient of variation (CoV), and intraclass correlation coefficient (ICC). The Bland-Altman analysis was used to assess 95% limits of agreement (LoA) and the correlation coefficient (r) to determine strength of relationship between measurements. 100 eyes of 100 patients underwent measurements. Pentacam AXL Wave had repeatability with an ICC for total ocular aberrations ranging from 0.84 for HOAs to 0.92 for LOAs and for corneal from 0.76 for HOAs to 0.86 for LOAs. The Sw, TRT, and CoV of all aberrations were significantly lower (better) than those of iTrace (P < .001). The mean differences between 2 devices were insignificant for the comparison of all parameters, except for spherical aberration (0.011 [0.002571 to 0.02008]; P = .01). Both devices showed excellent correlations for ocular aberrations (total HOAs [P = .12, LoA = -0.52 to 0.025; r = 0.89]; LOAs [P = .14, LoA = -2.71 to 2.61; r = 0.96]; coma [P = .27, LoA = -0.11 to 0.12; r = 0.89]; and SA [P = .01, LoA = -0.09 to 0.07; r = 0.97]). The repeatability estimates for wavefront aberrations using Pentacam AXL Wave were significantly better than those using iTrace. Both devices showed excellent correlations for total ocular aberrations.
Identifiants
pubmed: 34393184
doi: 10.1097/j.jcrs.0000000000000775
pii: 02158034-202204000-00004
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
408-416Informations de copyright
Copyright © 2021 Published by Wolters Kluwer on behalf of ASCRS and ESCRS.
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