Adjusted* odds ratios and 95% confidence intervals (CIs) for the association between computer use and FDT-VFA in subjects with and without refractive errors
| Subjects with refractive errors | Subjects without refractive errors | p for interaction† | |||||||
|---|---|---|---|---|---|---|---|---|---|
| FDT-VFA (+) | FDT-VFA(−) | Odds ratio | 95%CI | FDT-VFA (+) | FDT-VFA(−) | Odds ratio | 95%CI | ||
| n (%) | n (%) | n (%) | n (%) | ||||||
| *Adjusted by unconditional logistic analysis for age, sex, body mass index, ocular hypertension, family history, and smoking habit. †Significance of interaction was determined using the model with computer use × refractive errors term to the model with main effects only. FDT-VFA, visual field abnormalities detected by frequency doubling technology perimetry. | |||||||||
| Computer use | |||||||||
| Light users | 108 (26.0) | 1530 (30.2) | 1.00 | (reference) | 63 (59.4) | 1643 (46.5) | 1.00 | (reference) | |
| Moderate users | 216 (51.9) | 2629 (51.9) | 1.34 | 1.04 to 1.73 | 36 (34.0) | 1453 (41.1) | 0.74 | 0.48 to 1.15 | 0.004 |
| Heavy users | 92 (22.1) | 910 (18.0) | 1.74 | 1.28 to 2.37 | 7 (6.6) | 437 (12.4) | 0.45 | 0.19 to 1.06 | |
| Total | 416 | 5069 | p for trend <0.001 | 106 | 3533 | ||||