| Snellen’s Visual Acuity Notation | LogMAR |
| 6/6 | 0 |
| 6/9 | 0.18 |
| 6/12 | 0.3 |
| 6/18 | 0.5 |
| 6/24 | 0.6 |
| 6/36 | 0.7 |
| 6/60 | 1.0 |
| Counting fingers - 6/600 | 2.0 |
| Hand movement - 6/1200 | 2.3 |
| Light perception - 6/2400 | 2.6 |
| No light perception - 6/4800 | 2.9 |