why does squinting help when trying to read something small or far away?
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Squinting works by reducing the number of unfocused peripheral light rays hitting your eye, which helps focus vision. It also changes the shape of your eye to improve clarity, but most of the focus is due to reduction of peripheral light rays.
This is also known as the “pinhole effect,” because it’s even more evident when looking through a pinhole. Natives of arctic regions have long used snow goggles with narrow slits to achieve the same effect while reducing snow blindness.
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