Table 5. Myopisation and duration of activity in textile workers.
| Duration years | N | Emm % | Hpm % | Myopia % | Astigm % |
|---|---|---|---|---|---|
| 0–4 | 56 | 57.1 | 16.0 | 17.9 | 8.9 |
| 5–9 | 127 | 44.0 | 12.0 | 37.6 | 6.4 |
| 10–20 | 139 | 17.2 | 7.4 | 68.1 | 7.3 |
Joffe.48
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