Table 1.
The correlation of digital screen time with grades of symptoms of computer vision syndrome.
| Symptoms of computer vision syndrome | Spearman's correlation coefficient | P-value |
|---|---|---|
| Burning | 0.126 | 0.143 |
| Itching | 0.056 | 0.515 |
| Feeling of a foreign body | 0.220 | 0.010 |
| Tearing | 0.047 | 0.584 |
| Excessive blinking | 0.069 | 0.421 |
| Eye redness | 0.125 | 0.144 |
| Eye pain | 0.160 | 0.062 |
| Heavy eyelids | 0.205 | 0.016 |
| Dryness | 0.230 | 0.007 |
| Blurred vision | −0.062 | 0.475 |
| Double vision | 0.060 | 0.487 |
| Difficulty focusing for near vision | 0.159 | 0.063 |
| Increased sensitivity to light | 0.117 | 0.174 |
| Colored halos around objects | −0.089 | 0.299 |
| Feeling that eyesight is worsening | −0.020 | 0.813 |
| Headache | 0.100 | 0.244 |
| Sum grade of computer vision syndrome | 0.386 | <0.001 |