Table 5: Comparison between mean index values obtained for both groups.
| -
|
Keratoconus |
N |
Mean |
p |
| SVI |
No |
92 |
29.1522 ± 1.18821 |
<0.0001 |
| Yes |
46 |
74.2959 ± 5.36396 |
| VAI |
No |
92 |
0.1635 ± .01327 |
<0.0001 |
| Yes |
46 |
0.6511 ± .05918 |
| KI |
No |
92 |
1.0249 ± .00295 |
<0.0001 |
| Yes |
46 |
1.1948 ± .02021 |
| CKI |
No |
92 |
1.0097 ± .00108 |
<0.0001 |
| Yes |
46 |
1.0674 ± .00710 |
| minR |
No |
92 |
7.3890 ± .02948 |
<0.0001 |
| Yes |
46 |
6.3359 ± .24087 |
| IHA |
No |
92 |
6.654 ± .7573 |
<0.0001 |
| Yes |
46 |
25.763 ± 3.7786 |
Abbreviations: SVI (Surface variation index), VAI (Vertical asymmetry index), KI (Keratoconus index), CKI (Central keratoconus index), IHA (Index of height asymmetry), IHD (Index of height decentration), minR (Minimum radius).