Table 2

Average change on LOCS III scale for four examiners from 1994 to 1995

		Type of lens opacity
		Cortical	Nuclear opalescence	Posterior subcapsular	Nuclear colour
Right eye:
Total
No	97	97	97	97
Median	0.0	0.2	0.0	0.3
25th, 75th%	−0.1, 0.2	0.1, 0.4	−0.1, 0.0	−0.0, 0.7
Range	−0.8, 3.7	−0.5, 1.4	−0.4, 1.9	−0.9, 1.9
Abnormal in 1994
No	25	83	12	62
Median	−0.1	0.2	0.4	0.2
25th, 75th%	−0.3, 0.3	0.0, 0.4	0.0, 0.7	−0.2, 0.5
Range	−0.8, 1.2	−0.5, 1.4	−0.4, 1.6	−0.9. 1.9
Normal in 1994
No	72	14	85	35
Median	0.0	0.5	0.0	0.5
25th, 75th%	−0.1, 0.2	0.3, 0.6	−0.1, 0.0	0.3, 0.7
Range	−0.4, 3.7	0.2, 0.8	−0.4, 1.9	−0.1, 1.3
Left eye:
Total
No	97	97	97	97
Median	0.1	0.2	0.0	0.3
25th, 75th%	−0.1, 0.3	0.l, 0.3	−0.1, 0.0	0.l, 0.6
Range	−0.7, 1.6	−0.5, 1.0	−0.6, 1.7	−0.8, 1.6
Abnormal in 1994
No	28	88	15	65
Median	0.1	0.2	0.1	0.2
25th, 75th%	−0.2, 0.5	0.l, 0.3	−0.2, 0.7	−0.1, 0.5
Range	−0.7, 1.1	−0.5, 1.0	−0.6, 1.7	−0.8, 1.6
Normal in 1994
No	69	9	82	32
Median	0.1	0.6	0.0	0.5
25th, 75th%	−0.1, 0.3	0.4, 0.6	−0.1, 0.0	0.3, 0.7
Range	−0.4, 1.6	0.2, 0.9	−0.3, 0.4	0.0, 1.3

↵Abnormality at baseline (1994) on the LOCS-III scale defined for cortical as ⩾1, for nuclear opacity as ⩾2, for posterior subcapsular as ⩾1, and for nuclear colour as ⩾2.