Oranged-tinted lenses for blue light blocking
blues blocking glasses
Pictured above are some of the earliest products (still available today) in the blue light blocking spectrum. You will want to determine
what you want to block - some combination of blue light, ultraviolet A and B, and glare - what the wearer will tolerate and
if other lenses, perhaps to correct near-sightedness or far-sightedness - are involved. And in martial arts there is always the 
concern with correct accessories that look stylish. We are primarily concerned with lessening seizures and secondarily concerned 
with headaches (although we think they are often related to seizures), squinting and so on. A teaching challenge is that such eyewear
makes it difficult to use the appearance of the student's eyes as a diagnostic.
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