When you are purchasing your online eyeglasses, you are actually looking into a vast online catalogue that provides you with more and more different models to select. If you cannot find what you want to buy in one online store, then you could easily move into the others. And this does really mean that you need to close that said store page and open the others.
Moreover, the online shopping could really save your time quite a lot. Compare to your traditional shopping that may take hours before you could even get the glasses that you want, online shopping may take in less than half an hour. Once you have made your decision over the product, you just need to click several times, type several letters and numbers (this depends on the methods of payment you prefer to have), and then wait! The next thing you know, you are wearing your new glasses already!