TABLE 2.
Parameters used for the diagnosis of progression in keratoconus
| Parameter | n (%) |
|---|---|
| K max | 17 (89.5) |
| Minimum corneal thickness | 14 (73.7) |
| Medical history | 14 (73.7) |
| Increase in astigmatism | 10 (52.6) |
| Deterioration in BCVA | 10 (52.6) |
| Belin ABCD Progression Display | 9 (47.4) |
| Corneal astigmatism | 8 (42.1) |
| Myopic change | 4 (21.1) |
| K mean | 4 (21.1) |
| PI (Pachymetry index) | 4 (21.1) |
| KI (Keratoconus index) | 4 (21.1) |
| KPI (Keratoconus progression index) | 4 (21.1) |
| Posterior radius (r‐min) | 3 (15.8) |
| Change in spherical equivalence | 3 (15.8) |
| Deterioration in uncorrected visual acuity | 2 (10.5) |
| ISV (Index of surface variance) | 2 (10.5) |
| D‐index | 2 (10.5) |
| IHA (Index for height asymmetry) | 1 (5.3) |
| Other | 5 (26.3) |
| Most important parameter in detection | |
| K max | 11 (57.9) |
| Belin ABCD progression display | 4 (22.1) |
| Increase in astigmatism | 1 (5.3) |
| Other | 2 (10.5) |