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Maximum rotation and decentration without a clinically significant predicted loss in logMAR visual acuity (< 2 letters); mean ± standard deviation
| Normal | Keratoconus | |
|---|---|---|
|
| ||
| Uncorrected astigmatism | −0.66 ± 0.35D | −2.82 ± 1.77D |
| Best cylinder correction | −0.40 ± 0.46D | −0.81 ± 1.06D |
|
| ||
| Rotation (Clockwise) | +13.4 ± 1.8° | +10.6 ± 4.8° |
| Rotation (Counter clockwise) | −14.1 ± 1.6° | −10.5 ± 4.7° |
| Rotation (Full range) | 27.4 ± 3.1° | 21.1 ± 9.4° |
|
| ||
| Min Decentration (any direction) | 0.39 ± 0.15 mm | 0.27 ± 0.13 mm |
