Table 1.
Characteristics of the sample and prevalence of Computer Vision Syndrome (CVS).
| Variables | No. of Subjects (n = 343) |
No. with CVS (n = 195) |
p-Value |
|---|---|---|---|
| Sex | |||
| male | 78 (22.7%) | 37 (47.4%) | 0.056 |
| female | 265 (77.3%) | 158 (59.6%) | |
| Age (years) | |||
| ≤30 | 32 (9.3%) | 16 (50.0%) | 0.062 |
| 31–40 | 73 (21.3%) | 42 (57.5%) | |
| 41–50 | 93 (27.1%) | 62 (66.7%) | |
| 51–60 | 107 (31.2%) | 60 (56.1%) | |
| >60 | 38 (11.1%) | 15 (39.5%) | |
| Hospital | |||
| HMN | 141 (41.1%) | 85 (60.3%) | 0.284 |
| HUCA | 202 (58.9%) | 110 (54.5%) | |
| Ophthalmic lens wearers | |||
| no | 101 (29.4%) | 49 (48.5%) | 0.044 |
| yes | 242 (70.6%) | 146 (60.3%) | |
| Contact lens wearers | |||
| no | 290 (84.5%) | 155 (53.4%) | 0.003 |
| yes | 53 (15.5%) | 40 (75.5%) | |
| Ocular Surgery | |||
| no | 309 (90.1%) | 173 (56.0%) | 0.330 |
| yes | 34 (9.9%) | 22 (64.7%) | |
| Occupational groups | |||
| physicians and surgeons, including residents | 128 (37.3%) | 63 (49.2%) | 0.056 |
| nurses and nurse specialists, including those in training | 164 (47.8%) | 104 (63.4%) | |
| nursing assistants | 51 (14.9%) | 28 (54.9%) | |
| Work schedule | |||
| morning shifts | 133 (38.8%) | 71 (53.4%) | 0.075 |
| evening shifts | 3 (0.9%) | 0 (0.0%) | |
| rotating shifts, without nights | 24 (7.0%) | 14 (58.3%) | |
| rotating shifts, including nights | 100 (29.2%) | 66 (66.0%) | |
| morning shifts plus on-call | 83 (24.2%) | 44 (53.0% | |
| Easy software application | |||
| no | 74 (21.6%) | 39 (52.7%) | 0.416 |
| yes | 269 (78.4%) | 156 (58.0%) | |
| Use of visual display terminals (VDT) at work (hour per day) | |||
| <2 | 27 (7.9%) | 13 (48.1%) | 0.534 |
| 2–4 | 112 (32.7%) | 67 (59.8%) | |
| >4 | 204 (59.5%) | 115 (56.4%) | |
| Use of computer outside work | |||
| no | 55 (16.0%) | 24 (43.6%) | 0.031 |
| yes | 288 (84.0%) | 171 (59.4%) |