Vision
Overview | Understanding vision | Visual functions (5) | Env. context | Design guidance (2) | Pop. stats. (2)
Population statistics
Prevalence data | Demand & exclusion
Vision ability level (in increasing order)
| V1 | Cannot tell by the light where the windows are |
| V2 | Cannot see the shapes of furniture in a room |
| V3 | Cannot see well enough to recognise a friend if close to his face |
| V4 | Cannot see well enough to recognise a friend who is at arm's length away |
| V5 | Cannot see well enough to read a newspaper headline |
| V6 | Cannot see well enough to read a large print book |
| V7 | Cannot see well enough to recognise a friend across a room |
| V8 | Has difficulty recognising a friend across the road |
| V9 | Has difficulty reading ordinary newspaper print |
| V10 | Full vision ability |
Graph showing the distribution of vision ability, where those with full ability (V10) are not shown.
Important note
These vision ability levels and prevalence statistics are taken directly from the 1996/97 Disability Follow-up Survey (Grundy et al. 1999), which was commissioned by the government to plan welfare support. The GB adult population was 45.6 million people at the time of this survey. Please see the Framework section for more detail.
Overview | Understanding vision | Visual functions (5) | Env. context | Design guidance (2) | Pop. stats. (2)