I come from a Mediterranean island and I spend my summers swimming and diving, always with open eyes. I don't want put my feed on sea urchins or crash with a bo

I come from a Mediterranean island and I spend my summers swimming and diving, always with open eyes. I don't want put my feed on sea urchins or crash with a boat or rock! My eyes only hurt in swimming pools after a while. In the sea, my eyes don't hurt. I'm in my thirties. [edit: added "and diving"]