You might doubt the complicated process of buying glasses online. With our 6-step guide, you will learn that buying glasses online is actually easy! Before moving on to further steps, first make sure you have your non-expired prescription ready. You will also need your pupillary distance (PD) which can be obtained from your eye care provider or measured using online tools. If you are already a glasses-wearer, simply compare the measurements printed on your current glasses with the most recent measurements you just obtained in order to ensure you're getting the right frame size. Then, you can start to consider which certain styles of frames will suit your face shape and what lens type you are looking for. Before placing orders online, you should make sure you understand the shipping and return policy that the online retailer has listed.