Representative studies on visual impairment in elderly
| Author | Place/year | Sample size | Setting | Age group (years)* | Visual impairment (%) |
|---|---|---|---|---|---|
| Dev20 | Nepal (2012) | 385 | Residential care | Mean=74 | 39% (<6/18)†; 20% (<6/60)† |
| Khanna26 | Andhra Pradesh, India (2012) | 2160 | General population | ≥50 | 13.6% (<6/18)†; 8% (<6/60)† |
| Andhra Pradesh Eye Disease Study—subsample (1996–2000) | 521 | General population | ≥50 | 40.3% (<6/18)†; 11% (<6/60)† | |
| Sainz-Gomez23 | Spain (2010) | 392 | Residential care | Mean=82 | 31.9% (≤6/18); 14.9% (≤6/60) |
| Lamoureux21 | Australia (2009) | 76 | Residential care | Mean=83.9 | 46.4% (<6/12)† |
| Owsley4 | The USA (2007) | 380 | Residential care | ≥55 | 57% (<6/12)†; 10% (<6/60)† |
| VanNewkirk25 | Australia (2000) | 403 | Residential care | Mean=82 | 41% (<6/18)‡; 22% (<6/60)‡ |
| van der Pols18 | Britain (2000) | 1362 | General population and Residential care | ≥65 | 28.3% (<6/12)‡; 14.3% (<6/18)‡ |
| Nottle22 | Australia (2000) | 646 | Residential care | Mean=81 | 41% (<6/12)† |
| Mitchell3 | Australia (1997) | 128 | Residential care | ≥50 | 11% (<6/60)‡ |
| Tielsch24 | The USA (1995) | 499 | Residential care | ≥40 | 15.2% (<6/12)‡; 17% (<6/60)‡ |
*Age either mean age or minimum age limit for enrollment is reported.
†On the basis of presenting visual acuity in the better eye.
‡On the basis of best corrected Visual acuity in the better eye.