Patient characteristics used in the scoring protocol
| Category A (no points) | Category B (1 point each) | Category C (3 points each) |
|---|---|---|
| No additional risk factors carried by the patient | Previous vitrectomy | Dense/total/white or brunescent cataract |
| Corneal scarring | ||
| Small pupil (<3 mm) | Pseudoexfoliation | |
| Shallow anterior chamber (depth<2.5 mm) | Phacodonesis | |
| Age>88 years | ||
| High ametropia (>6 D of myopia or hyperopia) | ||
| Posterior capsule plaque | ||
| Posterior polar cataract | ||
| Miscellaneous risks assessed by the surgeon (eg, poor position of eye/patient) |