Buying prescription eyeglasses online is both time-saving and money-saving, so nowadays more and more people do so. And so do I. but when I buy prescription eyeglasses online I find that I forget to ask my ophthalmologist for my eyeglasses prescription, so I failed to buy the eyeglasses which I like very much, and I have to buy it later on. It’s very important to have your eyeglasses prescription when buying eyeglasses online, so don’t forget to go to your ophthalmologist before buying eyeglasses online.