| Value | Category |
|---|---|
| 1 | Born Disabled |
| 2 | Illness |
| 3 | Road/Railway Accident |
| 4 | Domestic Accident |
| 5 | Mine Accident |
| 6 | Other Work/Farming Accident |
| 7 | Fight/Assault |
| 8 | Playing/Sport |
| 9 | Animal Accident |
| 10 | Unknown |
| 11 | Domestic Violence |
| 12 | Albinism |
| 13 | Other (Specify) |
| 21 | A lot of reading |
| 22 | Sunlight/light reflection |
| 23 | Computer/TV |
| 24 | Old age |
| 25 | Eye related kind of illness |
| 26 | Sewing and knitting |
| 27 | Allergy |
| 28 | Inheritance |