A study, “Vigabatrin for focal seizures in tuberous sclerosis,” found that [1]:
Vigabatrin (VGB) is used for focal seizures in tuberous sclerosis (TS) and may be an effective therapy in patients who fail to respond adequately to other anti-seizure medications while awaiting definitive epilepsy surgery.
Vigabatrin is well-established as the first-line therapy for infantile spasms in association with tuberous sclerosis, but less is known about its role in focal seizures due to tuberous sclerosis.
[Researchers] retrospectively identified 22 patients with tuberous sclerosis who received Vigabatrin for focal seizures, starting Vigabatrin in June 1989 and continuing through the present time. Nineteen (86%) had a history of infantile spasms and all except the two oldest, born in 1986, received Vigabatrin for infantile spasms. Eleven of these individuals exhibited improvement in or resolution of infantile spasms. Sixteen out of 17 with infantile spasms remained on Vigabatrin to treat focal seizures.
The risk for vision loss due to photoreceptor toxicity continues to limit prolonged use.