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Table 5 The difference and agreement for corneal thickness measurements between CASIA swept-source optical coherence tomography and Pentacam Scheimpflug imaging in children

From: The precision and agreement of corneal thickness and keratometry measurements with SS-OCT versus Scheimpflug imaging

Device Pairings

Mean ± SD

P Value

95% LoA

Center

−4.91 ± 5.06

<  0.001

−14.83 to 5.00

Thinnest

−4.77 ± 5.51

<  0.001

−15.56 to 6.03

Nasal 2 mm

−8.46 ± 5.59

<  0.001

−19.42 to 2.50

Superior 2 mm

−13.19 ± 5.73

<  0.001

−24.44 to − 1.95

Temporal 2 mm

−5.46 ± 5.80

<  0.001

−16.83 to 5.91

Inferior 2 mm

−6.30 ± 6.29

<  0.001

− 18.63 to 6.02

Nasal 5 mm

−24.16 ± 7.98

<  0.001

−39.80 to − 8.52

Superior 5 mm

−30.91 ± 9.45

<  0.001

−49.42 to − 12.39

Temporal 5 mm

−17.13 ± 7.78

<  0.001

−32.38 to −1.87

Inferior 5 mm

− 13.15 ± 9.52

<  0.001

−31.81 to 5.52

  1. Thickness data are in units of micrometer (μm); Mean ± SD = Mean ± Standard deviation generated by paired T-test; 95% LoA = 95% limits of agreement