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Exposure to certain visual stimuli such as flashing lights at certain intensities or visual patterns may trigger seizures. This condition is known as photosensitive epilepsy. It is estimated that it affects between 3% and 5% of people with epilepsy. Seizures occur as a result of an unusual reaction of the brain to the visual information it receives.

This type of epilepsy is most prevalent among children and teenagers, especially those with generalized epilepsy or juvenile myoclonic epilepsy. With aging it becomes less frequent and people become less sensitive to visual stimuli.

Among the main elements that can cause this type of seizure are television, video games, computer monitors, fluorescent lights, discotheque lights and geometric patterns. However, there are many other factors that must be combined to trigger the photosensitive reaction, such as:

  • Flash frequency (i.e., how fast the light flashes)
  • Brightness
  • Contrast with backlighting
  • Distance between viewer and light source
  • Wavelength of light
  • Whether the person’s eyes are open or closed

How do I know if I’m photosensitive?

Many people know that they are photosensitive if they have a seizure when exposed to flashing lights or patterns. An EEG may include photosensitive epilepsy tests.

How can I reduce risks?

  • Take regular breaks off the screen.
  • Sit away from the screen.
  • Use the remote control to change channels.
  • Watch TV or use a screen in a well-lit room.
  • Change your browser settings to control moving images when surfing the Internet.

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The next Saturday 21st of November at 4 pm, you will be able to know first hand our product: mjn-SERAS.
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    mjn-SERAS is a medical device with CE marking according to the European Directive 93/42/EEC and the Royal Decree RD. 1591/2009.
    Contraindications: Do not use the product if you suffer from an infection in the ear canal or if you suffer from a skin lesion in the vicinity of the product's area of influence.
    Considerations: This medical product works with an APP only on Android phones. The results tested are 96% sensitivity and 94% specificity.
    CPSP20103CAT.

    Save the date

    El próximo sábado 21 de noviembre a las 4 de la tarde, podrás conocer de primera mano nuestro producto: mjn-SERAS.
    mjn-SERAS es un producto sanitario que lanza una señal de aviso cuando el riesgo de crisis de epilepsia es elevado, a la persona afectada y a sus contactos de confianza.

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      mjn-SERAS es un producto sanitario con marcado CE conforme a la Directiva Europea 93/42/EEC y el Real Decreto RD. 1591/2009.
      Contraindicaciones: No usar el producto en caso de padecer una infección en el canal auditivo o en caso de padecer una lesión cutánea en las proximidades del área de influencia del producto.
      Consideraciones: Este producto sanitario funciona con una APP solo en teléfonos Android. Los resultados testeados son 96% de sensibilidad y 94% de especificidad.
      CPSP20103CAT.