Table 6.
Comparison between CVS group and no-CVS group regarding CVS complaints
| CVS complaints |
No-CVS group, n (%)
2825 (41.22) |
CVS group, n (%)
4028 (58.78) |
P -value |
|---|---|---|---|
| Ocular complaints, n (%) | |||
| Blurred vision | |||
| No Yes |
2225 (78.76) 600 (21.24) |
2117 (52.56) 1911 (47.44) |
< 0.0001 |
| Dry eye | |||
| No Yes |
2054 (72.71) 771 (27.29) |
1681 (41.73) 2347 (58.27) |
< 0.0001 |
| Eye strain and fatigue | |||
| No Yes |
1660 (58.76) 1165 (41.24) |
1027 (25.50) 3001 (74.50) |
< 0.0001 |
| Eye redness and irritation | |||
| No Yes |
2180 (77.17) 645 (22.83) |
2069 (51.37) 1959 (48.63) |
< 0.0001 |
| Double vision | |||
| No Yes |
2665 (94.34) 160 (5.66) |
3463 (85.97) 565 (14.03) |
< 0.0001 |
| Difficulty in refocusing the eyes | |||
| No Yes |
2240 (79.29) 585 (20.71) |
2263 (56.18) 1765 (43.82) |
< 0.0001 |
| Near vision discomfort/difficulty | |||
| No Yes |
2381 (84.28) 444 (15.72) |
2675 (66.41) 1353 (33.59) |
< 0.0001 |
| Unclear objects post-screen use | |||
| No Yes |
2238 (79.22) 587 (20.78) |
2279 (56.58) 1749 (43.42) |
< 0.0001 |
| Extraocular complaints, n (%) | |||
| Headache | |||
| No Yes |
1512 (53.52) 1313 (46.48) |
1011 (25.10) 3017 (74.90) |
< 0.0001 |
| Neck/shoulder/back pain | |||
| No Yes |
1301 (46.05) 1524 (53.95) |
784 (19.46) 3244 (80.54) |
< 0.0001 |
| Joint pain in the fingers and wrists | |||
| No Yes |
2090 (73.98) 735 (26.02) |
2197 (54.54) 1831 (45.46) |
< 0.0001 |
| Inability to hold objects well | |||
| No Yes |
2496 (88.35) 329 (11.65) |
2933 (72.82) 1095 (27.18) |
< 0.0001 |
| Difficulty writing with a pen | |||
| No Yes |
2555 (90.44) 270 (9.56) |
3113 (77.28) 915 (22.72) |
< 0.0001 |
| Sleep disturbances/insomnia | |||
| No Yes |
1761 (62.34) 1064 (37.66) |
1648 (40.91) 2380 (59.09) |
< 0.0001 |
| Hunger and eating late-night/midnight snacks | |||
| No Yes |
1259 (44.57) 1566 (55.43) |
1232 (30.59) 2796 (69.41) |
< 0.0001 |
| Depression | |||
| No Yes |
1885 (66.73) 940 (33.27) |
1708 (42.40) 2320 (57.60) |
< 0.0001 |
| Suicidal ideation | |||
| No Yes |
2636 (93.31) 189 (6.69) |
3327 (82.60) 701 (17.40) |
< 0.0001 |
| Number of symptoms | |||
| Mean ± SD Median (range) |
4.56 ± 3.12 4 (0 to 17) |
8.18 ± 3.38 8 (0 to 17) |
0.0001 |
Abbreviations: CVS, computer vision syndrome. Note: P-values < 0.05 are shown in bold; The chi-square test or Mann–Whitney U test was used for statistical analysis.