why does squinting help when trying to read something small or far away?
In: 35
Squinting works because it decreases the effective size of the iris. The small opening, like a smaller f stop on a camera, although it decreases the amount of light entering the retina, increases the depth of field… That means the range over which things stay in focus increases. If there is enough light to see, more things are in focus and they are in better focus than they were before the squint. That’s it
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