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Table 2 Characteristics of the lenticule thickness and ΔLT (μm)

From: Investigation of predictability and influence factors of the achieved lenticule thickness in small incision lenticule extraction

Parameters

Predicted lenticule thickness

Measured lenticule thickness

Ultrasound

Pupil center

Corneal Vertex

Mean ± SD

Range

106.55 ± 23.24

(60 ~  155)

93.53 ± 20.39

(46 ~  139)

90.30 ± 20.54

(42 ~  134)

89.89 ± 20.47

(43 ~  135)

Predicted to measured (ΔLT) (μm)

13.02 ± 8.84

(− 9 ~  33)

16.26 ± 8.69

(− 10 ~  37)

16.66 ± 8.87

(− 9 ~  37)

95% limits of agreement

−4.67 ~  30.71

− 1.11 ~  33.63

− 1.07 ~  34.39

Proportion of ΔLT in predicted value

11.9% ± 8.0%

15.1% ± 8.0%

15.4% ± 8.0%