Table 2 Descriptive statistics, repeatability metrics and agreement results for the anterior segment parameters divided into different axial length groups.

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

Parameter

Instrument

Mean ± SD

RLimit

Mean difference

LoA interval [range]

Long eyes (n = 30)

AL (mm)

Lenstar

25.71 ± 1.08

0.03

-0.01

0.18 [-0.10; 0.08]

Eyestar

25.71 ± 1.07

0.03

ACD (mm)

Lenstar

3.26 ± 0.30

0.12

-0.02

0.20 [-0.12; 0.08]

Eyestar

3.27 ± 0.30

0.04

LT (mm)

Lenstar

3.80 ± 0.46

0.18

0.01

0.37 [-0.17; 0.20]

Eyestar

3.79 ± 0.44

0.05

Normal eyes (n = 85)

AL (mm)

Lenstar

23.57 ± 0.55

0.05

-0.01

0.09 [-0.05; 0.04]

Eyestar

23.58 ± 0.55

0.02

ACD (mm)

Lenstar

3.01 ± 0.35

0.24

0.02

0.53 [-0.24; 0.29]

Eyestar

2.99 ± 0.33

0.05

LT (mm)

Lenstar

3.78 ± 0.39

0.24

-0.01

0.60 [-0.31; 0.29]

Eyestar

3.79 ± 0.34

0.06

Short eyes (n = 19)

AL (mm)

Lenstar

21.91 ± 0.39

0.04

-0.01

0.19 [-0.11; 0.08]

Eyestar

21.93 ± 0.38

0.03

ACD (mm)

Lenstar

2.81 ± 0.31

0.18

-0.02

0.67 [-0.36; 0.32]

Eyestar

2.83 ± 0.31

0.07

LT (mm)

Lenstar

3.92 ± 0.42

0.27

-0.01

0.73 [-0.37; 0.35]

Eyestar

3.92 ± 0.43

0.06

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