Ocular coloboma and foetal valproate syndrome: four further cases and a hypothesis for aetiology.

We read with interest the case report from Shah et al. (2014) hypothesising that coloboma may be a feature of the Fetal Valproate Syndrome (FVS) . We have observed four further individuals who presented with ocular coloboma following exposure to sodium valproate (VPA) in utero and believe that this is a true association.