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Table 1 Demographic characteristics of normal, subclinical keratoconus, and keratoconus groups

From: Machine learning helps improve diagnostic ability of subclinical keratoconus using Scheimpflug and OCT imaging modalities

  Normal (n = 50) Sub KC (n = 33) KC (n = 38)
SE (D) −3.9 ± 2.3 −3.7 ± 4.0 −6.7 ± 4.5*
BCVA (decimal VA) 1.1 ± 0.1 1.0 ± 0.2* 0.5 ± 0.3*
Max-K (D) 43.0 ± 1.3 43.1 ± 1.9 46.3 ± 3.3*
Min-K (D) 44.3 ± 1.6 44.7 ± 1.3 51.2 ± 4.7*
Avg-K (D) 43.7 ± 1.4 43.9 ± 2.0 48.8 ± 3.6*
Ast-K (D) 1.3 ± 0.7 1.6 ± 0.9 5.3 ± 3.1*
  1. Normal= normal group; Sub-KC= subclinical keratoconus group; KC= keratoconus group; n= number of eyes; SE= spherical equivalent; BCVA= best corrected visual acuity; Max-K= maximum keratometry; Min-K= minimum keratometry; Avg-K= average keratometry; Ast-K= astigmatic keratometry; VA= visual acuity; D= diopter; *P < 0.05 compared to the normal group