I suggest you to buy a pair of prescription sunglasses online. We all know that sunglasses can be very expensive in physical shops. But the sunglasses sold online are much cheaper. First, you may need to have your eyesight checked by your eye doctor and then get the prescription. Then you can place an order online. If this is the first time you buy sunglasses online, I suggest you to have a look at some online eyeglasses stores that have good reputation. Their products are more dependable. Plus, you should have your eyesight checked in the morning than that in the afternoon because the result will be more accurate in the morning.