As of 2016, some genes of interest include:

Pathophysiology
Epileptic seizures occur due to changes in the brain that result in the lowering of the seizure threshold in a particular individual making that person vulnerable to recurring seizures. These changes can be a result of a structural abnormality, brain lesions, or simply a genetic disposition to seizures. In reflex epilepsy, these changes in the brain result in a small area that is capable of interrupting normal firing patterns and more likely to produce the synchronous firing patterns that characterize a seizure. These hyper-excitable areas may then be activated by certain stimuli resulting in a reflex seizure. Reflex seizures are thus notable because the presentation of a particular stimulus, that activates the hyper-excitable areas of the brain, directly overcomes the seizure threshold, and results in a reflex seizure.The activation of the hyper-excitable areas of the brain are additionally regulated by facilitating factors that may increase the likelihood of eliciting a seizure. Most commonly these include fatigue, sleep deprivation, or stress. Facilitating factors are different for each individual. Due to the large variance between the different kinds of reflex epilepsies, the specific mechanism causing reflex seizures may vary. Diagnosis
The diagnosis of reflex epilepsy usually includes a comprehensive medical and family history as well as a variety of tests. These tests may include a electroencephalography (EEG), magnetic resonance imaging (MRI), as well as genetic testing.The procedure for diagnosing epilepsy generally follows three steps:
Determining if the seizure or seizure like event is truly an epileptic seizure.
Determining what kind of seizure that someone has had. Determining if this seizure or seizures are a part of a specific epilepsy syndrome or disease. Treatment
The treatment of reflex epilepsy generally involves decreasing exposure to a persons triggers as well as anti-epileptic medications. Specific treatment depends both on the person as well on the kind of reflex triggers. For example, in photosensitive epilepsy, some people may rely only on managing exposure to their triggers, while others, may benefit greatly from anti-epileptic drugs. In addition, different anti-epileptic medications may be used in order to treat a given persons reflex epilepsy depending on the kind of seizures that they experience. Photosensitive epilepsy
Photosensitive reflex epilepsy is usually treated with both lifestyle changes and anti-epileptic medications. Some lifestyle modifications that may be recommended are limiting the amount of time one is exposed to television or screens, watching television in a bright well-lit room at a distance of at least 2 meters, and avoiding television or video games when tired. LCD TV screens or Televisions with higher refresh rates (100 Hz) cause less flickering and thus lower the likelihood of a seizure. In addition, special blue lens Z1 glasses have been shown to reduce seizures in many people with photosensitive reflex epilepsy.If the above lifestyle modifications do not manage the condition, anti-epileptic medications may also be used. Valproate is usually the first line medication of choice in people with photosensitive reflex epilepsy with many people becoming seizure free.