Skip to main content

Table 4 Mean scores (95% CI) by visual acuity (better eye), binocular status, and by between eye differences in visual acuity

From: Is the NEI-VFQ-25 a useful tool in identifying visual impairment in an elderly population?

Exposure Number (%) General vision Near activities Total VFQ score
Visual acuity (better eye)     
6/9 or better 877 (50) 79.7 (78.8, 80.5) 99.4 (99.2, 99.5) 94.7 (94.3, 95.1)
<6/9 to 6/12 387 (22) 75.0 (73.6, 76.4) 98.6 (98.1, 98.9) 92.8 (92.0, 93.4)
<6/12 to 6/18 277 (16) 72.1 (70.3, 73.8) 97.2 (96.1, 98.0) 91.2 (90.1, 92.2)
<6/18 203 (12) 60.4 (57.7, 63.0) 88.1 (82.5, 92.0) 83.1 (80.5, 85.3)
P-value † 1744 <0.001 <0.001 <0.001
Binocular status     
Binocular 1561 (90) 76.7 (76.0, 77.3) 98.9 (98.7, 99.0) 93.6 (93.3, 93.9)
Monocular ‡ 183 (10) 64.7 (62.0, 67.3) 94.7 (92.0, 96.5) 83.1 (80.4, 85.5)
P-value 1744 <0.001 <0.001 <0.001
Difference in acuity between eyes     
Equal acuity 185 (12) 80.2 (78.4, 81.9) 99.4 (99.1, 99.6) 95.4 (94.6, 96.0)
≤ 0.1 LogMAR 657 (42) 77.9 (76.9, 78.9) 99.2 (99.0, 99.3) 94.5 (94.0, 94.9)
>0.1 LogMAR 719 (46) 75.4 (74.4, 76.4) 98.4 (98.1, 98.7) 92.6 (92.0, 93.1)
P-value †   <0.001 <0.001 <0.001
  1. Scores by levels of visual acuity, binocular status, and differences in acuity between eyes adjusted for age, gender, practice, and for other exposures listed in the table throughout
  2. ‡ 183 participants could not read the chart at 1 metre in one eye