Open globe classification system
| A Visual grade (visual acuity): |
| 1 20/20–20/40 |
| 2 20/50–20/100 |
| 3 19/100–5/200 |
| 4 4/200–light perception |
| 5 No light perception |
| B Zone of injury (posterior extent of full thickness wound): |
| 1 Cornea only |
| 2 5 mm posterior to the limbus |
| 3 Posterior to zone 2 |
| C Mechanism of open globe injury: |
| 1 Blunt rupture |
| 2 Penetrating |
| 3 Perforating |
| 4 Intraocular foreign body |
| 5 Mixed mechanism |
| D Presence of an afferent pupillary defect: |
| 1 Yes |
| 2 No |