Table 1
Conversion table for Snellen best corrected visual acuity to line score
Snellen best corrected visual acuity
Line score
CF = counting fingers, HM = hand movement, LP = light perception.
20/20
16
20/25
15
20/30
14
20/40
13
20/50
12
20/60
11
20/80
10
20/100
9
20/120
8
20/160
7
20/200
6
20/300
5
20/400
4
CF
3
HM
2
LP
1