Most online stores have thousands of selection of prescription glasses which can be overwhelming at first. Fortunately, easy and simple search functions make it a breeze to find the perfect pair. You can narrow down the various glasses by frame type, prescription, color, price, and so on. This allows you to look at a few dozen different pairs, rather than a thousand, and also makes sure that each pair you look at is close to the end product you want. Instead of having to try on pair after pair and hope that not only they fit right, look right, are the right prescription, and are within your price range, you can now look at a number of different styles that meet all these requirements.