Table 2.
Composite and subscale scores of the CHI-NEI-VFQ-25 (median range)
| Subscale | Scores of different vision statuses | Score of the whole group | |||
|---|---|---|---|---|---|
| Blindness | Low vision | Monocular visual impairment | Mild visual impairment | ||
| General health | 50.0(100.0) | 50.0(100.0) | 75.0(100.0) | 75.0(100.0) | 75.0(100.0) |
| General vision** | 20.0(40.0) | 20.0(60.0) | 40.0(60.0) | 40.0(40.0) | 40.0(60.0) |
| Ocular pain | 100.0(50.0) | 100.0(87.5) | 100.0(75.0) | 100.0(75.0) | 100.0(87.5) |
| Near vision activities** | 0 (91.7) | 41.7(100.0) | 58.3(100.0) | 58.3(100.0) | 50.0(100.0) |
| Distance vision activities** | 16.7(91.7) | 50.0(100.0) | 75.0(100.0) | 75.0(100.0) | 62.5(100.0) |
| Social function** | 25.0(100.0) | 68.8(100.0) | 87.5(100.0) | 87.5(87.5) | 87.5(100.0) |
| Mental health** | 18.8(81.3) | 25.0(81.3) | 43.8(81.3) | 37.5(81.3) | 37.5(81.3) |
| Role difficulty** | 12.5(100.0) | 25.0(100.0) | 50.0(100.0) | 50.0(100.0) | 37.5(100.0) |
| Dependence** | 16.7(75.0) | 37.5(75.0) | 66.7(83.3) | 58.3(75.0) | 58.3(83.3) |
| Color vision** | 50.0(100.0) | 100.0(100.0) | 100.0(100.0) | 100.0(100.0) | 100.0(100.0) |
| Peripheral vision** | 25.0(100.0) | 50.0(100.0) | 75.0(100.0) | 75.0(100.0) | 75.0(100.0) |
| Composite score** | 27.1(76.1) | 50.1(78.9) | 68.0(76.4) | 65.5(75.3) | 63.0(85.4) |
CHI-NEI-VFQ-25, Chinese version of the National Eye Institute Visual Function Questionnaire-25
The Driving subscale was omitted, because there were too few cases for analysis
**The scores in the four vision status groups were significantly different, P < 0.01. The Wilcoxon rank sum test was used to perform pairwise comparisons; The median of the composite scores and the medians of the subscale scores between any two vision status groups were significantly different (P < 0.017), except for the difference between the monocular visual impairment group and the mild visual impairment group (P > 0.05)