With respect to antiepileptic effects ZK 91296 is surprisingly potent against spontaneous petit mal in rats, stress-induced seizures in gerbils, photoepilepsy in baboons, and DMCM-induced seizures in particular, whereas the compound is unexpectedIy inactive against kindled seizures.
Source: wiktionary
I was unable, however, to find literature indicating a higher incidence of migraine in patients with photoepilepsy.
Source: wiktionary
Darigabat is an α2/3/5 subunit-selective positive allosteric modulator of GABAA receptors that has demonstrated broad-spectrum activity in several preclinical models of epilepsy as well as in a clinical photoepilepsy trial.
Source: wiktionary