A Study to Investigate the Effect of ICA-105665 in Photosensitive Epilepsy Patients

Inclusion Criteria: * A diagnosis and history of epilepsy for which they are on 0-2 concurrent antiepileptic drugs. * On a stable dose of their current AED(s) for 4 weeks prior to the Screening Visit. * Must be in good health (with the exception of epilepsy), as determined by the Primary Investigator via the medical history, a physical examination, and screening laboratory investigations. * A body mass index (BMI) between 18 and 35. * Able and willing to give written informed consent prior to participation in the study. * A reproducible IPS-induced photo-paroxysmal EEG response (PPR) of at least 3 points on a frequency assessment scale in at least one eye condition and no change of more than 3 frequencies in 2 repeated measurements recorded at the Screening Visit. Exclusion Criteria: * History of non-epileptic seizures (metabolic, structural, or pseudoseizures). * History of status epilepticus while on any antiepileptic medication. * The etiology of the seizures is due to any of the following; progressive degenerative disease, metabolic illness, active infection, demyelination, drugs, alcohol. * The subject has used benzodiazepines (oral, intra-muscular, or suppository) as escape medication within the past 6 months. * The subject has taken an investigational medication within 30 days prior to the Day 1. * Women who are pregnant or lactating. * An active Central Nervous System (CNS) infection, demyelinating disease, degenerative neurological disease or any CNS disease deeme…