Table 3. Changes in subjective symptom score before and after the visual tasks using questionnaire.
| Flat | 4000R | 3000R | 2000R | 1000R | ||
|---|---|---|---|---|---|---|
| Eye strain | Before | 5.5 | 5.4 | 5.5 | 5.4 | 5.5 |
| After | 12.5 | 12.5 | 12.7 | 12.5 | 12.6 | |
| Eye pain | Before | 10.3 | 8.7 | 8.9 | 9.3 | 9.8 |
| After | 20.7 | 19 | 19.3 | 19.6 | 18.3 | |
| Headache | Before | 3.2 | 3.1 | 3.1 | 3.1 | 3.2 |
| After | 7.7 | 7.8 | 7.8 | 7.7 | 7.7 | |
| Double vision | Before | 2.9 | 2.2 | 2.4 | 2.8 | 2.9 |
| After | 5.7 | 5 | 5.3 | 5.6 | 5.7 | |
| Blurred vision | Before | 3.2 | 2.1 | 2.2 | 2.4 | 2.9 |
| After | 5.2 | 4.1 | 4.1 | 4.3 | 5.0 | |
| Irritation | Before | 5 | 4.1 | 4.2 | 4.8 | 5.0 |
| After | 9 | 8.2 | 8.2 | 8.8 | 9.1 | |
| Burning sensation | Before | 3.8 | 2.5 | 2.5 | 3.1 | 3.8 |
| After | 6.1 | 4.4 | 4.5 | 5.0 | 5.7 | |
| Dry eye | Before | 11.2 | 9.7 | 10 | 10.5 | 11.0 |
| After | 19.6 | 17.9 | 18.2 | 18.8 | 19.3 | |
| Tearing | Before | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 |
| After | 3.4 | 3.3 | 3.3 | 3.4 | 3.4 | |
| Total score | Before | 47.3 | 39.9 | 40.9 | 43.7 | 46.3 |
| After | 89.9 | 82.2 | 83.5 | 85.7 | 86.6 |
The total subjective symptom score was higher after the visual tasks for each monitor. The score for “eye pain” was significantly higher with the flat monitor versus that with the 1000R curved monitor.