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Table 1 Pairwise comparative analyses between each NCT and GAT

From: Comparison of intraocular pressure as measured by three different non-contact tonometers and goldmann applanation tonometer for non-glaucomatous subjects

NCT device

Mean (±SD) (mmHg)

Mean difference (±SD) with G-IOP

95% LoA

p value

C-IOP

17.23 ± 2.94

1.38 ± 1.75

−2.05 to 4.82

<0.001

N-IOP

14.87 ± 3.25

−0.98 ± 2.00

−4.91 to 2.95

0.001

T-IOP

16.33 ± 3.01

0.48 ± 2.12

−3.67 to 4.63

0.108

  1. C-IOP IOP value measured by Canon NCT, N-IOP IOP value measured by Nidek NCT, T-IOP IOP value measured by Topcon NCT, G-IOP IOP value measured by GAT, LoA limits of agreement
  2. P value by paired t-test