Table 1

 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 patientPrevious vitrectomyDense/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)