All Questions
3
questions
9
votes
3
answers
6k
views
Refraction: Swimming goggles, short-sightedness, and underwater vision
I have thought of this question due to personal experience. I am short-sighted, and over the last three years my short-sightedness has worsened. Taking a lifeguard certificate again now that I did ...
- 191
6
votes
2
answers
833
views
Glasses underwater
So I figured the refraction of the cornea is based on the index of air and the vitrous humor to make a perfect image. Underwater this is messed with because water has the same index as the eye. Hence ...
- 61
27
votes
5
answers
16k
views
Eyes open under water
Yesterday I looked underwater with my eyes open (and no goggles) and I realized I can't see anything clearly. Everything looks very, very blurry. My guess is that the eye needs direct contact with air ...
- 3,930