Table 4 Refractive errors in the ranges of A-constants with the SVR-assisted calculations (Data set size of 4800 eyes).

From: Training data size and predication errors in the use of machine-learning assisted intraocular lens power calculation

A-constants

119.0 and less (N = 603)

119.0–119.2 (N = 1109)

119.2–119.4 (N = 1442)

119.4–119.6 (N = 1646)

Mean (SD), D

0.05 (0.55)

− 0.01 (0.41)

− 0.02 (0.43)

0.00 (0.42)

MedAE, D

0.03

0.00

− 0.01

0.00

Within ± 0.25 D

42.1%

52.3%

50.7%

51.6%

Within ± 0.50 D

69.5%

82.0%

80.1%

80.7%

Within ± 1.00 D

93.5%

97.5%

97.5%

97.6%

  1. D diopter, MedAE medium of absolute prediction errors, SD standard deviation.
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