Classification of visual impairment status
Classification structure
| Code | Title |
|---|---|
| 1 | No visual impairment, without glasses (less than 20 over 40) |
| 2 | No visual impairment, with glasses (less than 20 over 40) |
| 3 | No visual impairment with pinhole test (less than 20 over 40) |
| 4 | Visual impairment despite pinhole test (greater than 20 over 40) |
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