Table 5.

Nuclear Opacity Progression* and Surgery Rates by Ethnicity, Age, and Sex

	African-Americans						Caucasians
	Males			Females			Males			Females
Age Group, y	Eyes at Risk	Incidence % (n)	Surgery % (n)	Eyes at Risk	Incidence % (n)	Surgery % (n)	Eyes at Risk	Incidence % (n)	Surgery % (n)	Eyes at Risk	Incidence % (n)	Surgery % (n)
65–69	10	30.0 (3)	0.0 (0)	24	20.8 (5)	0.0 (0)	54	44.4 (24)	5.6 (3)	91	30.8 (28)	6.6 (6)
70–74	21	23.8 (5)	9.5 (2)	31	19.4 (6)	6.5 (2)	84	30.1 (26)	5.9 (5)	119	26.9 (32)	5.9 (7)
75–79	20	10.0 (2)	5.0 (1)	40	30.0 (12)	0.0 (0)	76	34.2 (26)	10.5 (8)	89	24.7 (22)	9.0 (8)
≥80	10	20.0 (2)	20.0 (2)	19	26.3 (5)	10.5 (2)	38	15.8 (6)	7.9 (3)	48	16.7 (8)	12.5 (6)
Total	61	19.7 (12)	8.2 (5)	114	24.6 (28)	3.5 (4)	252	32.5 (82)	7.4 (19)	347	25.9 (90)	7.8 (27)
Overall by ethnicity	Eyes at risk 175		Progression % (n) 22.9 (40)		Surgery % (n) 5.1 (9)		Eyes at risk 599		Progression % (n) 28.7 (172)		Surgery % (n) 7.7 (46)

^*Nuclear progression: An increase of at least 0.3 units in eyes between 2.0 and 3.7 at baseline.

Note: In all, 87 eyes with baseline nuclear grade >3.7 not included on the table had surgery between visit 1 and visit 2; 291 eyes with baseline nuclear grade >3.7 and grades available in round 2 not included.