How? It isn't like your eyes are healing or anything. This isn't what we are doing with glasses because your eyes aren't injured. Using glasses is more akin to

How? It isn't like your eyes are healing or anything. This isn't what we are doing with glasses because your eyes aren't injured. Using glasses is more akin to using crutches when your leg simply will never work - neurological disorders, permanent disability, and so on. The crutches help you get along. Or maybe you aren't using crutches, but instead a brace for drop foot or some other sort of support. What you are referring to is something that will heal - an injury. And crutches are good when you are healing, too - those times you do not want to put weight on a leg. In these cases, you don't want to use crutches too long lest you have atrophy or stiffness. But this isn't like glasses at all: In this case, for eyes, you'd use things like a temporary, protective contact and/or an eye patch (There may be cases for glasses, but I'm a layperson and simply cannot think of any right now)