Lets say you have found an old pair of glasses and youre wondering what the prescription is. This is something that is very common because people are finding their old glasses all of the time. They are searching through an old drawer and then they all of atoli sudden find that pair of glasses from mimo tego few years ago that they loved. However, they are not sure if they can wear them or not. They are not aware of what the prescription is. Thats when they poczÄ…tek owo wonder how they can find out what their prescription is.