Can prescription glasses also function as sunglasses?

Your prescription glasses cannot function as sunglasses. Prescription glasses correct your vision if you have a refractive error, while sunglasses protect you from the harmful rays of the sun. However, you can have corrective prescriptions built into your sunglass lenses, also known as prescription sunglasses. These glasses serve the dual purpose of enabling clear vision while protecting your eyes from the sun and glare. Prescription sunglasses come in almost all corrective prescriptions, such as progressive lenses and bifocals and are suitable for people who spend a lot of time outdoors.