Why is it that when a nearsighted blurry vision becomes clear when looking through a very small hole cutout?
In: Biology
Yeah, as noted, this is the pinhole effect. It does not focus the light *at all.* But it makes the depth of field, or the “in focus” range so big, it significantly improves the image. They won’t let me post an image, but if you an image search for “pinhole effect”, all will be made clear.
I’m an optometrist, and also used to work as a photographer.
And it has little or no effect on field of view.
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