Clinical characteristics
| M1 diabetic maculopathy (DES exudate criteria) | |
| On FP, n (%) | 109 (32) |
| On MC, n (%) | 119 (35) |
| M1 diabetic maculopathy (DES exudate criteria) without macular thickening on SD-OCT | |
| FP | 76 |
| MC | 80 |
| Macular thickening on SD-OCT | |
| Thickened CST (male ≥320 µm and female ≥305 µm) | 40 |
| Thickened inner sector of ETDRS grid (≥360 µm) | 70 |
| Thickened CST and/or inner sector | 84 |
| Thickened CST and/or inner sector but no exudates on FP | 47 |
| Thickened CST and/or inner sector but no exudates on MC | 42 |
| Thickened CST and/or inner sector but no exudates on FP or MC | 37 |
| ‘Clinically significant macular oedema’ | |
| Total | 18 |
| Missed by MC | 1 |
| Missed by FP | 5 |
| Other macular abnormalities | |
| Vitreomacular traction | 6 |
| Subfoveal pigment epithelial detachment | 1 |
| Epiretinal membrane | 4 |
| Central serous chorioretinopathy | 1 |
CST, central subfield thickness; DES, Diabetic Eye Screening; ETDRS, Early Treatment Diabetic Retinopathy Study; FP, fundus photography; MC, multicolour; SD-OCT, spectral domain optical coherence tomography.