Table 9. Prevalences of diabetic retinopathy and maculopathy in other population-based studies.
| Study | Country | N | Prevalence of diabetic retinopathy (%) | Prevalence of diabetic maculopathy (%) | Vision-threatening disease (%) |
|---|---|---|---|---|---|
| Gutenberg Health Study | Germany | 943 | 21.7 | 2.3 | 5.0 |
| Tromsø Eye Study [17] | Norway | 514 | 26.8 | 3.9 | Not applicable (visual acuity <0.3: 1.6%) |
| Prevalence of diabetic retinopathy in the United States [2] | USA | 1006 | 28.5 | 2.7 | 4.4 |
| Beijing Eye Study [3] | China | 362 | 27.9 | 4.0 | ~ 20% |
| Singapore Malay Eye Study [19] | Singapore | 757 | 35.0 | 5.7 | 9.0 |
| Handan Eye Study [18] | China | 368 | 43.1 | no data available | no data available |
| Blue Mountains Eye Study [40] | Australia | 252 | 29.0 | no data available | no data available |
| Chennai Urban Rural Epidemiology Study [21] | India | 1715 | 17.6 | 5.0 | no data available |
| UAE Cross-sectional Survey [20] | United Arab Emirates | 513 | 19.0 | no data available | no data available |