In the district Virudhunagar, 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 21.2%.
Among the diabetics the prevalence of diabetic retinopathy was 19.6%. Prevalence of maculopathy was 3.8% and that of any retinopathy or maculopathy was 19.6%. Prevalence of sight threatening DR was 2.2%.
| Diabetics Examined | Male(N=1003) | Female(N=1738) | Total(N=2741) | |||
|---|---|---|---|---|---|---|
| n | % | n | % | n | % | |
| Known diabetes | 163 | 16.3 | 216 | 12.4 | 379 | 13.8 |
| Newly diagnosed diabetes | 83 | 8.3 | 118 | 6.8 | 201 | 7.3 |
| Total | 246 | 24.5 | 334 | 19.2 | 580 | 21.2 |
| Demographic Variable | Diabetic assessed for DR | DR cases | Prevalence % |
|---|---|---|---|
| Gender | |||
| Male | 176 | 37 | 21.0 |
| Female | 269 | 50 | 18.6 |
| Age Group | |||
| 50 – 59 | 186 | 25 | 13.4 |
| 60 – 69 | 171 | 44 | 25.7 |
| 70 – 79 | 73 | 15 | 20.5 |
| 80+ | 15 | 3 | 20.0 |
| All ages | 445 | 87 | 19.6 |
| Total(N=445) | n | % |
|---|---|---|
| Retinopathy | ||
| No visible retinopathy(R0) | 358 | 80.4 |
| Any retinopathy | 87 | 19.6 |
| Mild(R1) | 64 | 14.4 |
| Observable background(R2) | 14 | 3.1 |
| Referable(R3) | 8 | 1.8 |
| Proliferative(R4) | 1 | 0.2 |
| Maculopathy | ||
| No maculopathy (M0) | 428 | 96.2 |
| Any Maculopathy | 17 | 3.8 |
| Observable (M1) | 8 | 1.8 |
| Referable (M2) | 9 | 2.0 |
| Any Retinopathy and /or Maculopathy | 87 | 19.6 |
| Sight Threatening DR (R4 or M2) | 10 | 2.2 |
| Laser Scars | ||
| No Laser Scars | 443 | 99.6 |
| Pan retinal laser | 2 | 0.4 |
| Macular laser | 0 | 0.0 |
| Pan retinal and macular laser | 0 | 0.0 |