In the district Howrah, 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 13.2%.
Among the diabetics the prevalence of diabetic retinopathy was 17.6%. Prevalence of maculopathy was 5.4% and that of any retinopathy or maculopathy was 17.6%. Prevalence of sight threatening DR was 4.2%.
| Diabetics Examined | Male(N=1075) | Female(N=1586) | Total(N=2661) | |||
|---|---|---|---|---|---|---|
| n | % | n | % | n | % | |
| Known diabetes | 100 | 9.3 | 130 | 8.2 | 230 | 8.6 |
| Newly diagnosed diabetes | 53 | 4.9 | 68 | 4.3 | 121 | 4.5 |
| Total | 153 | 14.2 | 198 | 12.5 | 351 | 13.2 |
| Demographic Variable | Diabetic assessed for DR | DR cases | Prevalence % |
|---|---|---|---|
| Gender | |||
| Male | 133 | 18 | 13.5 |
| Female | 179 | 37 | 20.7 |
| Age Group | |||
| 50 – 59 | 160 | 28 | 17.5 |
| 60 – 69 | 103 | 22 | 21.4 |
| 70 – 79 | 39 | 4 | 10.3 |
| 80+ | 10 | 1 | 10.0 |
| All ages | 312 | 55 | 17.6 |
| Total(N=312) | n | % |
|---|---|---|
| Retinopathy | ||
| No visible retinopathy(R0) | 257 | 82.4 |
| Any retinopathy | 55 | 17.6 |
| Mild(R1) | 33 | 10.6 |
| Observable background(R2) | 9 | 2.9 |
| Referable(R3) | 12 | 3.8 |
| Proliferative(R4) | 1 | 0.3 |
| Maculopathy | ||
| No maculopathy (M0) | 295 | 94.6 |
| Any Maculopathy | 17 | 5.4 |
| Observable (M1) | 5 | 1.6 |
| Referable (M2) | 12 | 3.8 |
| Any Retinopathy and /or Maculopathy | 55 | 17.6 |
| Sight Threatening DR (R4 or M2) | 13 | 4.2 |
| Laser Scars | ||
| No Laser Scars | 311 | 99.7 |
| Pan retinal laser | 0 | 0.0 |
| Macular laser | 0 | 0.0 |
| Pan retinal and macular laser | 1 | 0.3 |