I am hoping to get certified to dive in a couple weeks. Problem is that I wear glasses and have astigmatism.

One option is to get contacts, however I'm worried about losing them while clearing masks underwater. Another is to get prescription mask w/ astigmatism adjustment, but that is double the price of the contact exam & lenses. Last option is to use lenses with no astigmatism correction.

My prescription is -5 -2 x5 and -4.25 -2 x162. Is it possible to wear a lens not corrected for astigmatism and see well enough to not get headaches and be able to function?