TABLE 4. Estimated Prevalence of High Intraocular Pressure
and Glaucoma Defects at Screening in Population-Based Studies of Persons Older
Than 40 Years of Age
| Population | Number & Race/Ethnicity | Screening Methods* | Referral IOP Level (mm Hg) | Prevalence of High IOP/ Ocular Hypertension | Prevalence of Glaucoma |
| Ferndale, Wales, 196615 | 4231 white | H, T, O | >20 | 9.4% | 0.5% |
| P(l/3) | |||||
| Dalby, Sweden, 198116 | 1511 white | H, T, O, P | >20.5 | 7.3% | 0.9% |
| Framingham, MA, USA, 198017 | 5262 white (eyes) | H, T, O | >21 | 7.6% | †0.8%† |
| Beaver Dam, WI, USA, 199218 | 4926 white | H, T, FP, P | >21 | 4.7% | 2.1% |
| Baltimore, MD, USA,199119 | 2913 white 2395 black | H, T, FP, P | >21 | 7.4% | 1.1% |
| 4.2% | |||||
| St. Lucia, West Indies, 198920 | 1667 black | H, T, O | >21 | 18.4% | 8.6% |
| Barbados, West Indies, 199421 | 4631 black | H, T, O, FP, P | >21 | 17.8% | 6.7% |
| Japan, 199122 | 8126 Asian | H, T, FP | >21 | 2.0% | 2.6% |
| Rotterdam Eye Study, Rotterdam, The Netherlands, 200023 | 6281 white | O, P, T, FP | None (high IOP = >21-mm Hg) | 5.6% | 0.8% |
| Blue Mountains Eye Study, Sydney, Australia, 199624 | 3654 white | H, P, FP | None | 3.7% | 2.4% |
| Ponza, Italy, 199725 | 1034 white | H, T, O | >20 | 6.0% | 2.5% |
| Melbourne Visual Impairment Project, Australia26 | 3271 white | T, P, O, FP | >21 | 1.6% | 1.7% |
| Proyecto VER, Arizona, US 200127 | 4774 Hispanic | P, FP, H, T, O | >22 | 2.3% | 2.0% |
| Aravind Comprehensive Eye Survey, Tamil Nadu, India, 200328 | 5150 Asian | T, O, P, FP | Non (high IOP = >21-mm Hg) | 1.1% | 1.2% |
| Tanzania, East Africa, 2000 29 | 3268 black | T, O, P | >23 | 2.7%‡ | 3.1% |