Why can't I see twice as good when I put on two pairs of glasses?
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Because glasses don’t amplify your vision. They correct it. That’s why everyone who wears glasses needs a prescription that is specific to them.
It refracts the warp in your cornea that causes astigmatism.
In your case it would over warp.
Bad eyesight is like a bent metal rod. A pair of glasses straightens it out. A second pair of glasses is bending it again.
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