Table 2.

Incidence rates of glaucomatous visual field loss as a function of age and gender

Age group (years)	Number of cases	Person years at risk	IR per 1000 person years (95% CI)	12-years risk (95% CI)
Male
55–64	2	3950	0.5 (0.0–1.2)	0.6 (−0.2–1.4)%
65–74	23	10,180	2.3 (1.3–3.2)	2.7 (1.6–3.7)%
75–84	32	4951	6.5 (4.2–8.7)	7.5 (4.9–9.9)%
85+	7	478	14.6 (3.8–25.5)	16.1 (4.5–26.3)%
Overall	64	19,560	3.3 (2.5–4.1)	3.9 (2.9–4.8)%
Female
55–64	5	5331	0.9 (0.1–1.8)	1.1 (0.1–2.1)%
65–74	17	13,615	1.2 (0.7–1.8)	1.5 (0.8–2.2)%
75–84	40	8030	5.0 (3.4–6.5)	5.8 (4.0–7.5)%
85+	14	1174	11.9 (5.7–18.2)	13.3 (6.6–19.6)%
Overall	76	28,150	2.7 (2.1–3.3)	3.2 (2.5–3.9)%
Total
55–64	7	9281	0.8 (0.2–1.3)	0.9 (0.2–1.6)%
65–74	40	23,795	1.7 (1.2–2.2)	2.0 (1.4–2.6)%
75–84	72	12,982	5.5 (4.3–6.8)	6.4 (5.0–7.9)%
85+	21	1652	12.7 (7.3–18.2)	14.1 (8.4–19.6)%
Overall	140	47,710	2.9 (2.4–3.4)	3.5 (2.9–4.0)%

CI confidence interval, IR incidence rate