Bioengineering
Measurement Repeatability and Concordance of Corneal Tomography in Keratoconus Using Anterion Versus Pentacam
By Ramadhan Ahmed, Kamini Narendra Reddy, Mahad Mohamed and 1 others.
Abstract
Purpose
This study aimed to compare the repeatability and agreement of corneal tomographic measurements between the Anterion Cornea App and Pentacam HR in keratoconus (KCN).
Methods
Eyes with KCN were imaged three consecutive times with each device. Intra-device repeatability was assessed using intraclass correlation coefficients (ICCs), within-subject standard deviation (Sw), coefficient of variation (CV), and repeatability coefficients (RCs). Inter-device agreement was evaluated using concordance correlation coefficients (CCCs) and Bland–Altman analysis. Parameters included anterior and posterior keratometry values (K1, K2, Kmean, Kmax, and ΔK), central corneal thickness (CCT), and thinnest pachymetry (TP).
