Figure 3.  .

Correlation between sVEP thresholds and age. sVEP thresholds for children with CVI of various etiologies (filled circles, n = 18), CVI with hypoxia (open circles, n = 12 [A] and 14 [B]), and control (open squares, n = 16) for contrast stimuli (A) and for spatial frequency stimuli (B) as a function of age in months are shown. Contrast thresholds in children with CVI, including mixed etiologies and hypoxia were correlated with age (P < 0.01), suggesting that contrast sensitivity in children with CVI improves with age. There were no correlations between spatial frequency thresholds and age for children with CVI or control children. Note that nearly all of the causes of CVI would have occurred connatally.