Table 1.

LogMAR equivalent of Snellen's visual acuity[20–23]

Snellen's acuity	LogMAR value
20/17	−0.1
20/20	0
20/30	0.2
20/40	0.3
20/60	0.5
20/80	0.6
20/120	0.8
20/200	1.0
16.7/200	1.1
13.3/200	1.2
10/200	1.3
6.7/200	1.5
3.3/200	1.7
Hand movements perception (2.5/200)	1.9
Perception of light only (1.3/200)	2.2