Do I need a prescription to buy RX eyewear?
You have to make sure that you have your current prescription on-hand before ordering glasses online. This will require you to go to visit your optometrist to make sure your prescription eyeglasses frames is up to date. You also want to make sure that you have your pupillary distance measured, which is the distance between your pupils. This determines where to place the center of each lens in your eyewear frames in order to customize the optics in your eyes, according to the American Optometric Association. This is crucial for online ordering since retailers want to ensure accuracy.