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Anti-seizure sunglasses

Anti-seizure sunglasses

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Author: jsolodar | Date: 03/11/2012 Filed under: Health Consequences, Medical Research, Protective Lenses | Tags: flash, flicker, photosensitive epilepsy, photosensitivity, seizure avoidance, seizures, Z1 F133, Zeiss |36 Comments
I promised to tell you about my daughter’s experience with the blue Zeiss Z1 F133 lenses I previously wrote about. We had prescription glasses made with these lenses in the past. However, her medication changed every year, which meant that she had to order them all over again. But when we got her a new pair the last time, we went for clip-ons. What I will tell you is this:
They do, in fact, keep Alice from having seizures when she watches TV! They even save her from having seizures while she reads for long periods of time. They’re also useful for unplanned group activities like emergency lighting, flash photography, and flickering fluorescent bulbs.
The Z1 is a filtering lens manufactured by Zeiss in Germany that filters out 80% of light. (I used to say they were cross-polarized, but that was incorrect.) In the Capovilla experiments, these were the lenses used. F133 is a specific shade of blue that has been shown to be most appropriate for photosensitive patients in clinical trials. The tinting is done by Zeiss. It’s a lens that was already on the market in Italy, where the research was conducted. Other lenses have been studied by researchers, and I want to learn more about them and share what I learn. However, given how powerful the Zeiss lenses are, there hasn’t been much other research.

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Seizures can be triggered by both natural and artificial light. For certain people with photosensitive epilepsy, such patterns, such as stripes or checks, can cause seizures. The following are several other possible reasons to be aware of:
Many people believe that photosensitive epilepsy affects someone with epilepsy. In reality, it’s a rare occurrence, with only about five people out of every hundred suffering from it. The onset of this form of epilepsy is normally before the age of 20. It affects more girls than boys and is most common between the ages of seven and 19. By adulthood, photosensitive epilepsy is typically gone.

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But did you know that your sunglasses will help you manage seizures in addition to being fashionable? This tip might be particularly useful for those of you who, like me, suffer from seizures caused by strobing (flashing) lights.
Fortunately, finding a good pair of sunglasses will drastically reduce how much these strobing lights affect you! Remember that high quality does not always imply a high price! When looking for a pair of sunglasses that can adequately block the light for you, there are four things to bear in mind:
I actually own two pairs of sunglasses that do an excellent job of blocking out strobe lights. I wear them to restaurants, movies, outdoor events, wedding parties, and pretty much everywhere else where there are flashing lights! Putting on your sunglasses when no one else is wearing them may seem silly at first, but trust me, it makes a huge difference!
Lillians Anoka is the source of my second pair. They aren’t a specific brand, but they are very dark and block out a significant amount of light! Remember that good quality doesn’t have to be expensive! These glasses were given to me for free after I spent a certain amount of money in the shop!

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In eight patients with photosensitive epilepsy, the suppressive effect of sunglasses on photoparoxysmal responses (PPRs) elicited by 15-Hz flicker stimuli with a low luminance of nearly 10 nits was investigated. The effect of three commercially available sunglasses, neutral density (ND), blue, and brown, on generalized PPRs elicited by a flickering dot pattern (FDP) and red flicker (RF) stimuli was separately investigated in six patients; the luminance of the visual stimuli decreased from approximately one-fifth (ND and brown sunglasses) to one-tenth (blue and brown sunglasses) (blue sunglasses). Four of the six patients wearing one of the three sunglasses had no provocation of PPRs with FDP stimulation, while two of the six patients had generalized PPRs with all three sunglasses. Two of the six patients wearing ND sunglasses had generalized PPRs elicited by RF stimulation; three of the six patients wearing brown sunglasses had similar elicitation; however, none of the six patients wearing blue sunglasses had elicited PPRs. These findings indicate that the three sunglasses’ suppressive effect on FDP stimulation is primarily due to a decrease in luminance, while the suppressive effect of blue sunglasses on RF stimulation is primarily due to an inhibitory effect of short wavelengths and probably a decrease in luminance. As a result, blue sunglasses are considered to be beneficial in the treatment of photosensitive epilepsy patients.