Irlen Spectral Filters are able to filter out the offending wave lengths of light which create the stress, thus allowing the brain to be able to make the normal adjustments for various lighting conditions, glare, and brightness.

Sunglasses are not enough. You may think they provide comfort and protection, but individuals who are light sensitive need to be protected from all lighting, not just sunlight. Individuals with light sensitivity wear their Irlen Spectral Filters from the time they wake up until they go to bed at night. Irlen Spectral Filters do not reduce brightness or contrast while providing the same comfort as being in a dimly lit room. Since they do not make things darker, like sunglasses, they can even help with headlights at night.