Dystrophy severity score (adapted from Primavesi et al).11
| CT-based dystrophic lesions | 0 point | 1 point | 2 points |
|---|---|---|---|
| Type | No lesion | Blebs (<1cm) | Bullae (>1cm) |
| Number | No lesion | Single | Multiple |
| Laterality | No lesion | Unilateral | Bilateral |
| DSS grades | |||
| Low grade | 0-3 | ||
| High grade | 4-6 |