Table 3

Changes of ⩾0.5 on LOCS III scale from 1994 to 1995

		Type of lens opacity
		Cortical	Nuclear opalescence	Posterior subcapsular	Nuclear colour	Any of 4
All patients:	n=99	n=99	n=99	n=99	n=99
Change developed
Neither eye	82%	84%	91%	58%	46%
One eye	8%	8%	5%	18%	22%
Both eyes	10%	8%	3%	24%	32%
Patients with abnormality at baseline:	n=32	n=91	n=16	n=68	n=92
Change developed
Neither eye	75%	89%	56%	68%	48%
One eye	16%	7%	25%	15%	24%
Both eyes	9%	4%	19%	18%	28%
Patients without abnormality at baseline:	n=67	n=8	n=83	n=31	n=7
Change developed
Neither eye	85%	25%	99%	36%	14%
One eye	5%	25%	1%	26%	0%
Both eyes	10%	50%	0%	39%	86%

↵Abnormality at baseline (1994) defined as the presence in at least one eye of a LOCS-III score for cortical ⩾1, for nuclear opacity ⩾2, for posterior subcapsular ⩾1, and for nuclear colour ⩾2.
↵Based on the average value for each patient for the four examiners.