Vision Testing (2) Flashcards
1
Q
Acuity
A
Aim to identify progressively smaller changes
- letters at distance
2
Q
Canada Minimum Eyesight Requirements
A
- Read letters less than 1.6mm high at a distance of 30cm or greater
- Colour vision sufficient to distinguish colours or shades used in NDT methods
- 20/30 or better in at least one eye
3
Q
Jaeger
A
Identifying letters in varying sizes from an arms length away
4
Q
Snellen
A
A score of
20/30 means that the subject can see at 20 feet what most people can see at 30 feet