Table 4.
Association between systemic diseases and environmental factor in study group.
| Systemic diseases | Dry eye | Chi-square | ||
|---|---|---|---|---|
| Yes | No | Value | p | |
| Hypertension | 179 (85.24%) | 31 (14.76%) | 50.83 | 0.0000 |
| Diabetes mellitus | 38 (79.17%) | 10 (20.83%) | 3.92 | 0.14 |
| Cardiovascular diseases | 46 (85.18%) | 8 (14.82%) | 5.72 | 0.0000 |
| Hyperthyroidism | 18 (85.71%) | 3 (14.29%) | 3.71 | 0.15 |
| Depression | 6 (100%) | 0 | 3.09 | 0.21 |
| Computer | 109 (56.19%) | 85 (43.81%) | 12.32 | 0.00015 |
| Air-condition | 40 (64.52%) | 22 (35.48%) | 0.081 | 0.77 |
| Stress | 64 (76.19%) | 20 (23.81%) | 4.35 | 0.036 |