Table 4.
Visual acuity as determined by visual evoked potential
| Subject | Visual acuity (cycles per degree) |
|||||
|---|---|---|---|---|---|---|
| Time from initiation of DHA supplementation: |
Baseline | 1 year | 2 years | 3 years | 4 years | 5 years |
| 1 | 16 | 23 | 40 | |||
| 2 | 10 | 12 | 12 | |||
| 3 | 11 | 21 | 22 | |||
| 4 | 17.7 | 23.1 | 10 | 24 | ||
| 5 | 6 | 38 | 32 | |||
| 6 | 10 | 18 | ||||
| 7 | 21.9 | 19.4 | 10 | 15 | 20 | |
| 8 | 16.6 | 23.9 | 48 | 32 | ||
| 9 | 10 | 30 | ||||
| 10 | 25 | |||||
| 11 | 19 | 6 | ||||
| 12 | 12.7 | 25.4 | 24.5 | |||
| 13 | 15 | 22 | 24.6 | 18 | ||
| 14 | 24.6 | 28.2 | 22.8 | 19.3 | 27 | |
| p value for time: | 0.051 | |||||
Visual acuity measurements in 14 subjects with LCHAD deficiency over 2–5 years of DHA supplementation. The p value is given for the effect of time over the first 2 years of supplementation. Normal acuity for adults and older children is 30 cpd, equivalent to 20/20 Snellen acuity.