Table 2.

Age-specific prevalence of cataract types in cross sections I and II.

Cataract type	Age (years)	Cross-section I		Cross-section II
		n	% (95% CL)*	n	% (95% CL)*
Cortical	50–54	473	4.4 (2.6–6.3)	338	7.4 (4.6–10.2)
	55–59	522	9.2 (6.7–11.7)	542	9.0 (6.6–11.5)
	60–64	615	16.4 (13.5–19.4)	556	16.7 (13.6–19.8)
	65–69	653	26.2 (22.8–29.6)	581	23.6 (20.1–27.0)
	70–74	516	31.2 (27.2–35.2)	514	35.4 (31.3–39.6)
	75–79	366	40.2 (35.1–45.2)	332	39.8 (34.5–45.1)
	80–84	194	58.8 (51.8–65.8)	163	42.9 (35.3–50.6)
	85–89	74	52.7 (41.1–64.4)	73	54.8 (43.1–66.5)
	90+	22	68.2 (47.0–89.3)	14	78.6 (54.0–103.2)
PSC	50–54	474	2.7 (1.3–4.2)	338	2.4 (0.7–4.0)
	55–59	522	2.9 (1.4–4.3)	541	2.6 (1.3–3.9)
	60–64	616	4.6 (2.9–6.2)	548	5.7 (3.7–7.6)
	65–69	655	6.3 (4.4–8.1)	573	4.5 (2.8–6.3)
	70–74	517	6.8 (4.6–8.9)	505	9.7 (7.1–12.3)
	75–79	367	11.4 (8.2–14.7)	327	9.5 (6.3–12.7)
	80–84	196	12.2 (7.6–16.9)	155	10.3 (5.5–15.2)
	85–89	74	18.9 (9.8–28.1)	69	11.6 (3.9–19.4)
	90+	23	21.7 (3.5–40.0)	11	0.0
Nuclear	50–54	323	1.6 (0.2–2.9)	331	0.9 (–0.2–1.9)
	55–59	386	2.3 (0.8–3.8)	507	3.6 (1.9–5.2)
	60–64	453	5.3 (3.2–7.4)	501	11.6 (8.8–14.4)
	65–69	478	17.2 (13.8–20.1)	534	18.5 (15.2–21.9)
	70–74	392	27.6 (23.1–32.0)	453	36.0 (31.6–40.4)
	75–79	255	45.1 (39.0–51.3)	302	55.6 (50.0–61.3)
	80–84	146	54.1 (45.9–62.3)	147	73.5 (66.3–80.7)
	85–89	50	64.0 (50.2–77.8)	70	80.0 (70.4–89.6)
	90+	18	72.2 (49.3–95.1)	15	73.3 (48.0–98.7)

n = number of persons

* 95% Confidence Limits