Friday, April 8, 2016

Photosensitive Epilepsy

Photosensitive epilepsy was first documented in 1885 in individuals affected when exposed to bright light.  Since that time 10 percent of newly diagnosed cases of seven to nineteen year olds have seizures triggered by TV or computer games.

The triggers vary from person to person, but some of the most common triggers are:

  • Flashing light

  • Bright, contrasting patterns such as white bars against a black background

  • Flashing white light followed by darkness

  • Stimulating images that take up your complete field of vision, such as being very close to a TV screen

  • Certain colors, such as red and blue

The seizures may be controlled with medication but several studies have documented success with cross polarized cobalt blue lenses in preventing the seizures.

The original lenses were manufactured by Zeiss and given the name Z1.  The Zeiss Z1 lens is a bright cobalt blue color and filters the longer red wavelengths that are thought to provoke seizures in those afflicted with the photosensitivity. Cross polarization is created by placing the right lens at 90 degrees and the left at 180 degrees.

If you or a loved one suffers from photosensitive epilepsy and would like to learn more about ways to prevent seizures from occurring, please give us a call to set an appointment to discuss your options.


flashing lights


From the eye doctors, opticians and staff at Rinkov Eyecare Centers. We’ve provided comprehensive eye exams, contact lenses, eyeglasses, sunglasses and medical treatment of eye disease, such as cataract treatment, in Columbus, Ohio for over 35 years. Come see an optometrist at one of our convenient Columbus locations – Downtown, West, East, Westerville, Dublin, Bexley, Worthington, Nationwide Plaza, and now open in Hilliard!

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