Table 8

Standard error of measurement for four examiners

		Type of lens opacity
		Cortical	Nuclear opalescence	Posterior subcapsular	Nuclear colour
1994:
No	149	149	149	149
Right eye	0.36	0.34	0.21	0.52
Left eye	0.33	0.34	0.19	0.50
1995:
No	97	97	97	97
Right eye	0.33	0.38	0.29	0.42
Left eye	0.34	0.38	0.30	0.43
Change 1994 to 1995:
No	97	97	97	97
Right eye	0.45	0.47	0.37	0.56
Left eye	0.45	0.44	0.34	0.55