Comparison table in validation study
| 7-F | 7-F description | Category | 2-F/exam | Description | Category |
|---|---|---|---|---|---|
| 10 | No retinopathy | A | 0 | No retinopathy | A |
| 20 | Minimal | B | 1a | Minimal | B |
| 35a | Mild with loops | F | 1b | Minimal with haem | B |
| 35b | Mild with Quest CWS/VB/IRMA | C | 2a | Mild with haem/HE/CWS | C |
| 35c | Mild with haem | C | 2b | Mild with Ma/HE | C |
| 35d | Mild with HE = 2 | C | 3a | Maculop with haem<1DD | D |
| 35e | Mild with HE>3 in 1+ | C | 3b | Maculop with HE<1DD | D |
| 35f | Mild with CWS | C | 3c | Maculop with HE groups | D |
| 43a | Moderate with HMA>3 in 4/5 | E | 3d | Maculop with reduced VA/CSME | D |
| 43b | Moderate with IRMA = 2 in 1–3 | E | 4a | Mod/severe with CWS/HMA | E |
| 47a | Mod/severe with both 43 | E | 4b | Mod/severe with IRMA/VB | F |
| 47b | Mod/severe with IRMA = 2 in 4–5 | F | 5 | Prolif | G |
| 47c | Mod/severe with HMA = 4 in 2–3 | E | 6 | Advanced | G |
| 47d | Mod/severe with VB = 2 in 1 | F | U | Unassessable | U |
| 53a | Severe with 2 or more 47s | F | |||
| 53b | Severe with HMA>4 in 4–5 | E | 2c | Treated DR | C |
| 53c | Severe with IRMA>3 in 1+ | F | |||
| 53d | Severe with VB = 2 in 2–3 | F | |||
| 61a | Mild prolif with FPE or FPD | G | |||
| 61b | Mild prolif with NVE = 2 in 1+ | G | |||
| 65a | Mod/prolif with NVE>3 in 1 or NVD = 2 | G | |||
| 65b | Mod/prolif with VH or PRH = 2 in 1 | G | |||
| 71a | HRC with VH or PRH>3 in 1+ | G | |||
| 71b | HRC with NVE>3 in 1+ and VH/PRH | G | |||
| 71c | HRC with NVD = 2 and VH/PRH | G | |||
| 71d | HRC with NVD>3 | G | |||
| 75 | HRC with NVD>3 and VH/PRH | G | |||
| 81 | Advanced DR | G | |||
| 88 | Unasessable | U | |||
| 99 | Unassessable | U |