Table 1 Screening results of BCDRT in 2009*
| Â | N (%) |
|---|---|
Total diabetic residents screened | 471 (100) |
Gender | Â |
   Male | 181 (38.43) |
   Female | 290 (61.57) |
Age | Â |
   < 60 years old | 159 (33.76) |
   > = 60 years old | 312 (66.24) |
Treatment of diabetes | Â |
   insulin or oral hypoglycemic agents | 353 (74.95) |
   lifestyle intervention alone (diet, regular exercise, or both) | 118 (25.05) |
Previously diagnosed with DR | 35 (7.43%) |
Previous treatment of DR | Â |
   laser coaglulation | 13 (2.76) |
   vitreoretinal surgery | 2 (0.42) |
Visual acuity of the better-seeing eye | Â |
   20/20 to 20/25 | 279 (59.24) |
   20/30 to 20/50 | 122 (25.90) |
   20/60 to 20/100 | 50 (10.62) |
   20/200 to 20/400 | 17 (3.61) |
   worse than 20/400 | 3 (0.64) |
DR detected by BCDRT | Â |
   Total | 115 (24.42) |
   Mild NPDR | 71 (15.07) |
   Moderate NPDR | 26 (5.52) |
   Severe NPDR | 8 (1.70) |
   Proliferative DR | 10 (2.12) |
Diabetic macular edema detected by BCDRT | 24 (6.47) |