| Value | Code Name | Code | Code System | Code Description |
|---|---|---|---|---|
| 1 | no difficulty at all | no difficulty at all | ||
| 2 | a little difficulty | a little difficulty | ||
| 3 | moderate difficulty | moderate difficulty | ||
| 4 | extreme difficulty | extreme difficulty | ||
| 5 | have you stopped doing this because of your eyesight | have you stopped doing this because of your eyesight | ||
| 6 | have you stopped doing this for other reasons or not interested in doing this | have you stopped doing this for other reasons or not interested in doing this |