Table 7.
Incidence of work-related eye and vision symptoms among the examined computer users/operators.
| Symptoms | Frequency | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KAU (N = 100) | SAUDIA (N = 100) | STC (N = 100) | |||||||||||||
| None | Some-times | Often | Daily | Total affected∗ | None | Some-times | Often | Daily | Total affected∗ | None | Some-times | Often | Daily | Total affected∗ | |
| Eye | |||||||||||||||
| Eye discomfort | 85 | 12 | 3 | 0 | 15 | 88 | 8 | 4 | 0 | 12 | 91 | 7 | 1 | 1 | 9 |
| Aches | 91 | 6 | 3 | 0 | 9 | 96 | 3 | 1 | 0 | 4 | 97 | 1 | 2 | 0 | 3 |
| Pain | 95 | 4 | 1 | 0 | 5 | 95 | 2 | 3 | 0 | 5 | 92 | 5 | 3 | 0 | 8 |
| Redness | 91 | 6 | 2 | 1 | 9 | 90 | 8 | 1 | 1 | 10 | 93 | 5 | 2 | 0 | 7 |
| Irritation and itching | 93 | 4 | 3 | 0 | 7 | 94 | 3 | 3 | 0 | 6 | 96 | 2 | 2 | 0 | 4 |
| Burning | 88 | 9 | 3 | 0 | 12 | 93 | 5 | 2 | 0 | 7 | 95 | 3 | 2 | 0 | 5 |
| Tearing | 82 | 14 | 4 | 0 | 18 | 92 | 3 | 4 | 1 | 8 | 91 | 7 | 1 | 1 | 9 |
| Dryness | 96 | 3 | 1 | 0 | 4 | 92 | 5 | 2 | 1 | 8 | 96 | 3 | 1 | 0 | 4 |
| Vision | |||||||||||||||
| Blurred: close objects | 92 | 6 | 2 | 0 | 8 | 93 | 3 | 3 | 1 | 7 | 95 | 3 | 2 | 0 | 5 |
| Blurred: distant objects | 88 | 9 | 3 | 0 | 12 | 86 | 8 | 5 | 1 | 14 | 91 | 6 | 3 | 0 | 9 |
| Sensitivity to light | 86 | 10 | 3 | 1 | 14 | 92 | 3 | 4 | 1 | 8 | 84 | 14 | 2 | 0 | 16 |
| Double flickering | 96 | 4 | 0 | 0 | 4 | 93 | 2 | 4 | 1 | 7 | 97 | 2 | 1 | 0 | 3 |
| Double vision | 99 | 1 | 0 | 0 | 1 | 94 | 3 | 2 | 1 | 6 | 93 | 4 | 3 | 0 | 7 |
| Change in color perception | 98 | 2 | 0 | 0 | 2 | 99 | 1 | 0 | 0 | 1 | 97 | 2 | 1 | 0 | 3 |
| Others | 98 | 1 | 1 | 0 | 2 | 99 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| All eye and vision symptoms | 41 | 48 | 9 | 2 | 59 | 61 | 22 | 12 | 5 | 39 | 46 | 14 | 15 | 25 | 54 |
∗The same subject may have more than one symptom occurring at different frequencies.