In the district Thrissur, diabetic retinopathy (DR) survey was conducted along with the RAAB survey using the RAAB6+DR methodology. All the known diabetics and newly diagnosed diabetics (random blood sugar ≥ 200mg/dl) aged 50 years and above were assessed for DR. Scottish classification was used for DR grading. It was found that prevalence of total diabetics in population aged ≥50 years was 29.4%.
Among the diabetics the prevalence of diabetic retinopathy was 22.3%. Prevalence of maculopathy was 10.4% and that of any retinopathy or maculopathy was 22.3%. Prevalence of sight threatening DR was 5.1%.
| Diabetics Examined | Male(N=1035) | Female(N=1685) | Total(N=2720) | |||
|---|---|---|---|---|---|---|
| n | % | n | % | n | % | |
| Known diabetes | 276 | 26.7 | 426 | 25.3 | 702 | 25.8 |
| Newly diagnosed diabetes | 36 | 3.5 | 62 | 3.7 | 98 | 3.6 |
| Total | 312 | 30.1 | 488 | 29.0 | 800 | 29.4 |
| Demographic Variable | Diabetic assessed for DR | DR cases | Prevalence % |
|---|---|---|---|
| Gender | |||
| Male | 305 | 71 | 23.3 |
| Female | 474 | 103 | 21.7 |
| Age Group | |||
| 50 – 59 | 284 | 47 | 16.5 |
| 60 – 69 | 291 | 67 | 23.0 |
| 70 – 79 | 162 | 45 | 27.8 |
| 80+ | 42 | 15 | 35.7 |
| All ages | 779 | 174 | 22.3 |
| Total(N=779) | n | % |
|---|---|---|
| Retinopathy | ||
| No visible retinopathy(R0) | 605 | 77.7 |
| Any retinopathy | 174 | 22.3 |
| Mild(R1) | 120 | 15.4 |
| Observable background(R2) | 30 | 3.9 |
| Referable(R3) | 20 | 2.6 |
| Proliferative(R4) | 4 | 0.5 |
| Maculopathy | ||
| No maculopathy (M0) | 698 | 89.6 |
| Any Maculopathy | 81 | 10.4 |
| Observable (M1) | 43 | 5.5 |
| Referable (M2) | 38 | 4.9 |
| Any Retinopathy and /or Maculopathy | 174 | 22.3 |
| Sight Threatening DR (R4 or M2) | 40 | 5.1 |
| Laser Scars | ||
| No Laser Scars | 774 | 99.4 |
| Pan retinal laser | 5 | 0.6 |
| Macular laser | 0 | 0.0 |
| Pan retinal and macular laser | 0 | 0.0 |