Table 4.

 Clinical measures of vision in better and worse eyes by level of care category

	Clinical measures of vision better eyes (standard deviation)			Clinical measures of vision in worse eyes (standard deviation)
	DVA	NVA	Contrast	DVA	NVA	Contrast
Level 1: Cannot care for self (27)	0.88 (0.43)	1.12 (0.44)	0.83 (0.50)	1.35 (0.41)	1.46 (0.30)	0.34 (0.43)
Level 2: Can look after self but not others (26)	0.70 (0.40)	0.94 (0.39)	1.03 (0.35)	1.28 (0.49)	1.45 (0.31)	0.43 (0.50)
Level 3: Can care for self and others (146)	0.35 (0.36)	0.57 (0.44)	1.26 (0.35)	1.0 (0.52)	1.24 (0.45)	0.67 (0.54)
One way ANOVA	p<0.001	p<0.001	p<0.001	p<0.01	p<0.001	p<0.01

DVA  =  distance visual acuity, NVA  =  near visual acuity, CS  =  contrast sensitivity.