International comparison of visual impairment <6/18 (including blindness) estimates
| Age category | NDNS community sample |
Blue Mountains eye study17 | Beaver Dam eye study22 | Melbourne visual impairment project18 |
| 65–74 years | 2.5% | 0.3% | 0.7% | 1.2% (60–70 years) |
| 75–84 years | 7.7% | 3.2% | 6.0% | 2.5% (70–80 years) |
| 85+ years | 29.7% | 13.6% | not included | 11.8% (80+ years) |