Table 7.

Annualized population incidence per 100,000 (40 years age and above) of open angle glaucoma related blindness in at least one eye by visual acuity or visual field.

Diagnosis year	Annualized Population Incidence Of Open Angle Glaucoma Related Blindness Per 100,000 (95% CI)
1965–1970	8.4 (3.7–13.2)
1971–1975	17.8 (10.5–25.1)
1976–1980	23.6 (15.6–31.7)
Overall: 1965–1980	16.6 (12.6–20.5)
1981–1985	6.7 (3.4–10.1)
1986–1990	7.5 (3.4–11.5)
1991–1995	6.8 (3.3–10.4)
1996–2000	5.0 (2.2–7.8)
Overall: 1981–2000	7.1 (5.2–9.0)

The incidence during the period 1981–2000 was significantly lower than during the period 1965–1980 (Poisson regression, P < 0.001).

CI – confidence interval