Table 1.

Comparison of European decimals to Snellen equivalent for measurement of visual acuity

	Snellen equivalent
European decimal	5 metres	1 metre
0.025		5/200
0.03		5/160
0.04		5/125
0.05		5/100
0.06		5/80
0.08		5/63
0.1	20/200	5/50
0.125	20/160	5/40
0.16	20/125	5/32
0.2	20/100	5/25
0.25	20/80	5/20
0.32	20/63	5/16
0.4	20/50	5/12.5
0.5	20/40	5/10
0.63	20/32
0.8	20/25
1.0	20/20
1.25	20/16