Table 2 Percentage of tuberculosis (TB) services reporting visual assessment during the first two months, and during prolonged ethambutol treatment.
From: Ethambutol and visual assessment in England: current practice and recommendations
| Â | None | Symptom check | Visual acuity | Colour Vision | Visual Fields | Other |
|---|---|---|---|---|---|---|
During first two months of treatment | ||||||
 <5 years old | 21% (9) | 53% (23) | 5% (2) | 5% (2) | 2% (1) | 5% (2) |
 5–15 years old | 14% (6) | 74% (32) | 16% (7) | 23% (10) | 7% (3) | 2% (1) |
 Adults (≥16 years) | 17% (11) | 73% (48) | 21% (14) | 24% (16) | 9% (6) | 2% (1) |
During prolonged treatment | ||||||
 <5 years old | 14% (6) | 40% (17) | 14% (6) | 7% (3) | 7% (3) | 5% (2) |
 5–15 years old | 12% (5) | 60% (26) | 35% (15) | 28% (12) | 9% (4) | 7% (3) |
 Adults (≥16 years) | 6% (4) | 77% (51) | 50% (33) | 42% (28) | 15% (10) | 6% (4) |
