Parameters | n | Stage 4 - 5 No. (%) | Stage 1 - 3 No. (%) | P value |
Retinal abnormality | 43 | 32 (74.4) | 11 (25.6) | 0.006* |
Only hypertensive retinopathy | 30 | 23 (76.7) | 7 (23.3) | 0.006* |
Only diabetic retinopathy | 5 | 3 (60.0) | 2 (40.0) | 0.625** |
Mixed hypertensive plus diabetic retinopathy | 8 | 4 (50.0) | 4 (50.0) | 1.000** |