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Br J Ophthalmol 88:788-791 doi:10.1136/bjo.2003.034520
  • Clinical science
    • Extended reports

The relation between disease asymmetry and severity in keratoconus

Table 4

Association between flat keratometry, steep keratometry, and corneal toricity with the FDACL overall and by FDACL severity group

Clinical measure* FDACL severity group† Association with FDACL of worse eye p Value comparing correlations
r p Value
*Outcome from the worse eye.
†FDACL of the worse eye where mild/moderate severity = FDACL(D) ⩽52 (n = 557) and severe severity = FDACL(D) ⩾52 (n = 480).
Flat keratometry Overall 0.82 <0.0001
Mild/moderate 0.58 <0.0001 0.0004
Severe 0.71 <0.0001
Steep keratometry Overall 0.86 <0.0001
Mild/moderate 0.66 <0.0001 0.01
Severe 0.74 <0.0001
Corneal toricity Overall 0.23 <0.0001
Mild/moderate 0.32 <0.0001 <0.0001
Severe 0.01 0.87

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