Table 5 The mean difference, paired t-test, 95% LoA and ICC for intraocular lens calculation differences between the two different operators based on the average method (from average of 3 consecutive readings from each operator) using OA-2000 swept-source optical coherence tomography in cataract patients.

From: Precision of a new ocular biometer in eyes with cataract using swept source optical coherence tomography combined with Placido-disk corneal topography

Device Pairings

Mean Difference ± SD

P Value*

95% LoA

ICC (95% CI)

SRK/T (Φ = 2.5) (D)

0.00 ± 0.10

0.922

−0.20 to 0.20

0.999 (0.998 to 0.999)

Holladay 1(Φ = 2.5) (D)

0.00 ± 0.12

0.962

−0.23 to 0.23

0.998 (0.997 to 0.999)

Hoffer Q(Φ = 2.5) (D)

0.00 ± 0.13

0.993

−0.25 to 0.25

0.998 (0.997 to 0.999)

SRK/T (Φ = 3.0) (D)

−0.01 ± 0.09

0.461

−0.18 to 0.16

0.999 (0.998 to 0.999)

Holladay 1(Φ = 3.0) (D)

−0.01 ± 0.10

0.501

−0.20 to 0.19

0.999 (0.998 to 0.999)

Hoffer Q(Φ = 3.0) (D)

−0.01 ± 0.11

0.499

−0.22 to 0.20

0.999 (0.998 to 0.999)

  1. SD = Standard deviation, LoA = limits of agreement, ICC = intraclass correlation coefficient.
  2. *Two ways.
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