Table 1

Study definitions of certifiable visual impairment

Visual acuityVisual field code (see Table 2)
1 or 23456
>6/24BlindP sightP sight
6/36 or 6/24BlindP sightP sightP sightP sight
6/60BlindP sightP sightP sightP sight
3/60BlindBlindP sightP sightP sight
<3/60BlindBlindBlindBlindBlind
  • P sight = partially sighted.

  • If media opacities/aphakia.