Table 3.
Comparison of NEI-VFQ-25 subscale item scores in the keratoconus group according to the subgroups of the keratoconus grade; visual acuity in the better and worse eye and contact lens use are presented (*P < 0.05; **P < 0.001).
| NEI-VFQ-25 scores | Keratoconus grade | Visual acuity, better eye | Visual acuity, worse eye | Contact lens use | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| I n: 6 |
II n: 9 |
III n: 7 |
IV n: 6 |
P | ≥0.4 n: 5 |
<0.4 n: 25 |
P | ≥0.4 n: 13 |
<0.4 n: 17 |
P | Yes n: 20 |
No n: 10 |
P | |
| General health ±SD |
66.6 15.2 |
67.7 21.0 |
53.7 26.8 |
70 20 |
0.771 | 52.5 12.5 |
69.6 21.5 |
0.102 | 54.4 12.3 |
77.2 21.9 |
0.013* | 65 27.8 |
65 18.7 |
0.849 |
| General vision ±SD |
60.0 17.3 | 70 21.6 |
35 12.2 |
65 35 |
0.112 | 68.7 33.7 |
59.2 22.5 |
0.487 | 60.5 26.1 |
62.2 24.5 |
0.859 | 49 20.1 |
64.2 25.1 |
0.284 |
| Ocular pain ±SD |
60.0 20 | 51.1 27.01 |
48.7 23.2 |
61.2 25.9 |
0.774 | 59 23 |
53.2 25.3 |
0.604 | 59 25.4 |
50 23.3 |
0.454 | 46 31.1 |
56.6 21.5 |
0.351 |
| Near vision ±SD |
83.3 28.8 | 82.2 16.2 |
62.5 25 |
71.2 32.2 |
0.503 | 68 27.9 |
81 20.7 |
0.340 | 79 24.8 |
76.1 21.7 |
0.644 | 70 18.7 |
78.3 24.5 |
0.346 |
| Distance vision ±SD |
93.3 11.5 | 83.3 19.2 |
82.5 20.6 |
80 21.6 |
0.772 | 71 15.9 |
90.3 15.7 |
0.024* | 83 18.1 |
87.7 17.8 |
0.517 | 87 13.9 |
83 19.6 |
0.891 |
| Social functioning ±SD |
100 0 |
81.6 26.6 |
93.7 12.5 |
72.5 32 |
0.371 | 64 25 |
91.4 20.42 |
0.030* | 80 24.03 |
88.8 25.3 |
0.203 | 93 10.9 |
82.3 26.7 |
0.730 |
| Mental health ±SD |
66.6 11.5 | 72.7 32.8 |
65 30 |
56.2 28.09 |
0.730 | 38 24.6 |
79.2 20.1 |
0.008* | 65 34.9 |
72.2 18.5 |
0.834 | 76 21.9 |
64 29.6 |
0.475 |
| Role difficulties ±SD |
83.3 15.2 | 75.5 27.5 |
81.2 37.5 |
72.5 27.5 |
0.818 | 53 24.3 |
84.2 22.8 |
0.022* | 71 26.1 |
81.6 27.6 |
0.240 | 78 31.3 |
77 25.8 |
0.928 |
| Dependency ±SD |
93.3 11.5 | 83.8 27.8 |
87.5 25 |
75 43.3 |
0.975 | 63.7 33 |
89.6 23.2 |
0.057 | 83.8 27.8 |
83.8 27.8 |
1.0 | 90 22.3 |
82.8 28.3 |
0.536 |
| Color vision ±SD |
100 0 |
88.3 20.6 |
93.7 12.5 |
87.5 25 |
0.750 | 86 21.9 |
92.1 17.5 |
0.51 | 90.5 17 |
90.5 20.6 |
0.83 | 95 11.1 |
89.6 19.8 |
0.731 |
| Peripheral vision ±SD |
86.6 23 | 83.8 16.9 |
77.5 20.6 |
72.5 25 |
0.660 | 74 19.4 |
83.2 17.4 |
0.358 | 82.5 17.8 |
78.8 19 |
0.73 | 74 13.4 |
83 18.4 |
0.315 |
| Overall composite score ±SD |
82.6 12.7 | 77 15.9 |
72.7 17.6 |
67.8 25.1 |
0.682 | 61.9 17.7 |
80.2 15.4 |
0.042* | 74 17.6 |
77 18.5 |
0.462 | 75.4 15.9 |
75.1 18.1 |
0.760 |