Photosensitivity Proof of Concept Trial

Exclusion Criteria

• •A history of non epileptic seizures (e.g. metabolic, structural or pseudo-seizures).
• •Women who are pregnant or lactating.
• •Women of reproductive potential who do not agree to use effective birth-control methods.
• •Any clinically significant laboratory abnormality which, in the opinion of the investigator, will exclude the patient from the study.
• •An active CNS infection, demyelinating disease, degenerative neurological disease or any CNS disease deemed to be progressive during the course of the study that may confound the interpretation of the study results.
• •Any clinically significant psychiatric illness, psychological or behavioral problems which, in the opinion of the investigator, would interfere with the patient's ability to participate in the study.
• •Patients who have a history of seizure worsening in response to narrow spectrum drugs (including carbamazepine)
• •Patients who are suffering from clinically significant active liver disease, porphyria or with a family history of severe hepatic dysfunction indicated by abnormal liver function tests greater than 3 times the upper limit of normal (AST and ALT).
• •A history of alcoholism, drug abuse, or drug addiction within the past 12 months.
• •Patients who have participated in any other trials involving an investigational product or device within 30 days of screening or longer as required by local regulations.
• •Patients receiving more than 1 background AED for their epilepsy. Patients receiving carbamazepine for their condition.
• •Patients who are allergic to levetiracetam or carbamazepine.