|
Points allocated to each risk factor using Habib's potential difficulty score system. |
|
| Risk factor |
Points allocated |
|
|
|
| Unable to lie flat (spinal deformity, asthma, heart failure) |
1 |
| Severe anxiety |
1 |
| Head tremor |
1 |
| Previous angle closure glaucoma |
1 |
| History of complication in fellow eye |
1 |
| Previous vitrectomy |
1 |
| Corneal scarring/cloudiness |
1 |
| Shallow anterior chamber |
1 |
| Poor pupillary dilation and/or posterior synechiae |
1 |
| Pseudoexfoliation |
1 |
| Phacodonesis/weak zonules |
1 |
| High myopia (axial length >27 mm) |
1 |
| High hypermetropia (axial length <20 mm) |
1 |
| Nuclear density grade 1–2 |
1 |
| Nuclear density grade 3 |
2 |
| Mature/brunescent/white/dense/total cataract |
3 |
Osborne et al. BMC Ophthalmology 2006 6:38 doi:10.1186/1471-2415-6-38 |
|