When you go snorkeling, you need to be able to see clearly to enjoy the experience and stay safe. Though you cannot wear glasses with a snorkel mask, people who wear glasses can use several different methods to seeing clearly in the water. You can wear contact lenses with your snorkeling mask, or you can wear a mask with prescription lenses.
Try on masks with pre-made prescription lenses at a dive shop. Most masks with pre-made prescription lenses will have the same prescription in each eye. If your eyes require dramatically different prescriptions, or if you have an unusually high prescription, pre-made prescription masks might not work for you.
Select a mask without prescription lenses if none of the pre-made prescription masks works for your eyes.
Take the mask to an optician who specializes in prescription masks. You can have an optician replace the mask’s original lenses with prescription lenses or insert prescription lenses over the original lenses. Most opticians who make prescription masks can make lenses for nearsighted, farsighted or astigmatic vision, as well as bifocal lenses and reading lenses.