Table 1. Assessment of lines of vision improvement.

Decimal	Snellen	LogMAR	Extrapolated decimal	Extrapolated Snellen	Extrapolated LogMAR
0.800	20/25	0.1
0.625	20/32	0.2
0.500	20/40	0.3
0.400	20/50	0.4
0.317	20/63	0.5
0.250	20/80	0.6
0.200	20/100	0.7
0.160	20/125	0.8
0.125	20/160	0.9
0.100	20/200	1
0.080	20/250	1.1
0.063	20/320	1.2
0.050	20/400	1.3
0.040	20/500	1.4
0.033	20/600	1.5
0.025	20/800, CF 10 ft.	1.6
0.020	20/1,000, CF 8 ft.	1.7
0.017	20/1,200, ~CF 7 ft.	1.8	0.014	20/1,400, CF 6 ft.	1.85
0.013	20/1,600, CF 5 ft.	1.9	0.011	20/1,800, CF 4 ft.	1.95
0.010	20/2,000, CF 2 ft.	2
		2.1
		2.2
		2.3
		2.4
		2.5
		2.6
		2.7
		2.8
		2.9
0.001	20/20,000, HM	3