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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