When snorkeling, scuba diving, or just swimming with goggles, you don’t need corrective glass, why does water do this and not air? Both are transparent continuous fluids.
When snorkeling, scuba diving, or just swimming with goggles, you don’t need corrective glass, why does water do this and not air? Both are transparent continuous fluids.
Water has a different reflection index (how ever it’s called in English) than air, which means it behaves like a magnifying glass somehow
So some visual defects can benefit from that. Also, you don’t read a book under water so harder to compare.
No water doesn’t fix your eyes, maybe you are just lucky to see a bit better due to the magnification effect.
Also, it distort what you see, mess up with distances and does not have any effect in focus, so if you have issues with focusing or see at close distance that will do nothing for you