Table 2.
htDVA scores (LogMAR) for normal subjects and patients with unilateral vestibular deafferentation
| ID | Horizontal canal | Posterior canal | Superior canal | |||
|---|---|---|---|---|---|---|
| Right | Left | Right | Left | Right | Left | |
| Normal subjects | 0.059 ± 0.052 | 0.037 ± 0.03 | 0.059 ± 0.061 | 0.059 ± 0.43 | 0.067 ± 0.051 | 0.061 ± 0.054 |
| Ipsi | Contra | Ipsi | Contra | Ipsi | Contra | |
| UVD G | 0.328 | 0.031 | 0.564 | 0.071 | 0.321 | −0.02 |
| UVD H | 0.222 | 0.076 | 0.247 | 0.112 | 0.222 | 0.112 |
Normal LogMAR values reflect mean ± 1 SD (ANOVA, F = 0.77, p = 0.57). Ipsi = same side as unilateral vestibular deafferentation. Contra = side opposite the affected canal. htDVA scores > 0.158 are outside of the mean ± 2 SD of LogMAR scores in normal subjects. Negative value indicates htDVA score better than static visual acuity.