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Table 1 Demographic and ocular biometry data

From: Application of total keratometry in ten intraocular lens power calculation formulas in highly myopic eyes

 

Mean ± SD

Range

Age (years)

64.99 ± 9.33

42 to 80

Sex (female/all)

50.49% (52/103)

–

Axial length (mm)

28.85 ± 2.34

26.01 to 35.02

Flat K (D)

42.81 ± 1.45

40.02 to 47.24

Steep K (D)

43.76 ± 1.53

40.61 to 48.06

Flat TK (D)

42.81 ± 1.46

39.87 to 47.12

Steep TK (D)

43.81 ± 1.48

40.52 to 47.97

Anterior chamber depth (mm)

3.45 ± 0.31

2.61 to 4.27

Lens thickness (mm)

4.49 ± 0.34

3.53 to 5.42

Central corneal thickness (μm)

546.80 ± 33.51

474.86 to 636.41

White-to-white distance (mm)

11.97 ± 0.39

10.94 to 13.13

Baseline BCVA (logMAR)

0.96 ± 0.63

0.22 to 3.00

Baseline cylinder (D)

 − 1.02 ± 0.69

 − 3.25 to 0.00

Post-op BCVA (logMAR)

0.14 ± 0.10

 − 0.08 to 0.30

Post-op SE (D)

 − 2.83 ± 0.90

 − 5.13 to − 0.63

Implanted IOL power (D)

10.39 ± 4.64

1.00 to 18.50

Follow-up period (months)

2.43 ± 0.94

1.03 to 4.83

  1. K = keratometry; TK = total keratometry; D = diopter; BCVA = best-corrected distant visual acuity; logMAR = logarithm of the minimal angle of resolution; Post-op = postoperative; SE = spherical equivalence; IOL = intraocular lens