When you first get your eyeglasses, the change in visual quality is one of the most impressive things you will ever experience. This is the same for many people, especially because when you first get your glasses, you have no idea what clear vision looks or feels like. And for many people, renewing their prescription or getting new glasses can feel unnecessary. They can see just fine, right? While you may think that you are seeing just as fine as the first time, chances are that your prescription has changed.