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Table 2 The mean difference, standard deviation, P value and 95% limits of agreement (LoA) for differences between the SW-9000 and MS-39

From: Agreement between a new optical low coherence reflectometry biometer and an anterior segment optical coherence tomographer

Device pairings

Mean difference ± SD

P value

95% LoA

CCT (μm)

2.21 ± 2.67

 < 0.001

− 3.01 to 7.44

ACD (mm)

− 0.10 ± 0.03

 < 0.001

− 0.16 to − 0.05

AQD (mm)

− 0.10 ± 0.04

 < 0.001

− 0.18 to − 0.03

Km (D)

− 0.01 ± 0.22

0.773

− 0.45 to 0.43

CD (mm)

0.20 ± 0.16

 < 0.001

 − 0.12 to 0.51

  1. CCT = central corneal thickness; ACD = anterior chamber depth; AQD = aqueous depth; Km = mean keratometry; CD = corneal diameter; SD = standard deviation