Table 1 Descriptive statistics, repeatability metrics and agreement results for the anterior segment parameters.

From: Evaluation of repeatability and agreement of two optical biometers for intraocular lens power calculation

Parameter

Instrument

Mean ± SD

RLimit

P value

Mean difference

LoA interval [range]

AL (mm)

Lenstar

23.80 ± 1.36

0.05

0.072

-0.01

0.14 [-0.07; 0.06]

Eyestar

23.81 ± 1.35

0.02

ACD (mm)

Lenstar

3.04 ± 0.36

0.21

0.503

0.01

0.51 [-0.25; 0.26]

Eyestar

3.03 ± 0.35

0.05

LT (mm)

Lenstar

3.81 ± 0.41

0.23

0.811

0.00

0.58 [-0.29; 0.29]

Eyestar

3.81 ± 0.38

0.06

K1 (D)

Lenstar

43.28 ± 1.36

0.31

0.084

0.02

0.64 [-0.30; 0.34]

Eyestar

43.26 ± 1.37

0.21

K2 (D)

Lenstar

44.35 ± 1.52

0.43

0.024

0.03

0.76 [-0.36; 0.41]

Eyestar

44.32 ± 1.53

0.23

  1. ACD: anterior chamber depth; AL: axial length; K1: flat keratometry; K2: steep keratometry; LT: lens thickness; RLimit: repeatability limit; LOA: limit of agreement.