| Groups/Treatment | I | II | III | IV | V | VI | VII | VIII |
| PRK ablation | −4.5D | −4.5D | −4.5D | −4.5D | −4.5D | −9.0D | −9.0D | Unwounded |
| Indced irregularity SM; smoothing PTK |
– | 10% | 30% | 50% | 50%CSM | – | CSM | – |
| Groups/Treatment | I | II | III | IV | V | VI | VII | VIII |
| PRK ablation | −4.5D | −4.5D | −4.5D | −4.5D | −4.5D | −9.0D | −9.0D | Unwounded |
| Indced irregularity SM; smoothing PTK |
– | 10% | 30% | 50% | 50%CSM | – | CSM | – |