Repeatability assessment of anterior segment measurements in myopic patients using an anterior segment OCT with placido corneal topography and agreement with a swept-source OCT

Table 2 Repeatability analysis of biometric measurements provided by MS-39

Parameter	ICC (95%CI)	S_w	CoR	CoV (%)	Repeated-measures ANOVA
Parameter	ICC (95%CI)	S_w	CoR	CoV (%)	F	P
K_f (D)	0.9956(0.9945 to 0.9965)	0.079	0.219	0.184	0.82	0.440
K_s (D)	0.9954(0.9942 to 0.9963)	0.091	0.252	0.207	1.36	0.258
K_m (D)	0.9970(0.9963 to 0.9976)	0.067	0.186	0.154	0.12	0.889
TCT (µm)	0.9993(0.9992 to 0.9995)	0.880	2.438	0.165	1.66	0.190
CCT (µm)	0.9996(0.9995 to 0.9997)	0.700	1.939	0.131	2.63	0.073
ACD (mm)	0.9988(0.9984 to 0.9990)	0.014	0.039	0.428	2.03	0.132
CV (mm³)	0.9970(0.9962 to 0.9976)	0.183	0.507	0.317	2.34	0.098
CD (mm)	0.9693(0.9620 to 0.9754)	0.066	0.183	0.556	0.50	0.608

ICC = intraclass correlation coefficient; CI = confidence interval; S_w = within subject standard deviation; CoR = coefficient of repeatability; CoV = coefficient of variation; ANOVA = analysis of variance; K_f = central corneal radius of the flat meridian; K_s = central corneal radius of the steep meridian; K_m = mean central corneal radius; TCT = thinnest corneal thickness; CCT = central corneal thickness; ACD = anterior chamer depth; CV = corneal volume; CD = corneal diameter

ISSN: 1471-2415