Quote:
Originally Posted by A930Rocket
Good question. I have a pair of safety glasses that as soon as I put them on, I feel some eye strain. Didn't always feel that way until the past six months.
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The safety glasses are almost certainly polycarbonate which has a different index of refraction than what you are probably used to. It is common for this to cause eyestrain. This can be accentuated if the frames get bent or twisted even a tiny bit. Get them checked for the Rx, frames adjusted. If you don't need the strength of the polycarbonate, ask them to remake them in traditional plastic.
But polycarbonate is a better material for safety glasses since it will stop a bullet.