Retinopathy grades; unenhanced digitised images versus 35 mm colour transparencies
| 35 mm colour transparencies | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Unenhanced digitised images | Grade | 0 | 1 | 2a | 2b | 3 | 4 | 5 | Total | |
| 0 | 7 | 1 | 8 | |||||||
| 1 | 10 | 32 | 1 | 2 | 45 | |||||
| 2a | 4 | 7 | 1 | 1 | 13 | |||||
| 2b | 43 | 1 | 44 | |||||||
| 3 | 2 | 20 | 1 | 23 | ||||||
| 4 | 1 | 9 | 10 | |||||||
| 5 | 7 | 7 | ||||||||
| Total | 17 | 37 | 8 | 49 | 21 | 11 | 7 | 150 | ||