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Levels of maculopathy according to Scottish Diabetic Retinopathy Grading Scheme 2003
| Maculopathy | Description | Outcome |
| M1 (observable) | Lesions within a radius of >1 but ⩽2 disc diameters of the centre of the fovea | Re-screen in 6 months (or refer to ophthalmology if this is not feasible) |
| Any hard exudates | ||
| M2 (referable) | Lesions within a radius of ⩽1 disc diameters of the centre of the fovea | Refer to ophthalmology |
| Any blot haemorrhages | ||
| Any hard exudates | ||
