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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