How powerful can glasses/contacts get?

Question

I have pretty bad eyes, I'm not sure on the specifics or what they mean but I can just tell they're worse than most people with glasses, I believe my left eye contact thing says -4.25, and right eye -5.0, not sure what that means.... right eye is worse than left though. I'm planning on LEC or something in the future, but regardless, if my eyes keep getting worse is there a point where they can't get good enough glasses/contacts to see well?

And also, just as a weird question, is it possible to get LEC or eye surgery or whatever to a certain extent, and if your eyes get worse again just get contacts to go over the new eyes?

Answer 1

I have a -12.00 and a -13.00  trust me they can even get worse than that and i have huge coke bottles!

Answer 2

There is no real limit to how strong a prescription can go, but in practice about + or - 20 is about as far as is ever needed. Glasses and contacts at this level can become very difficult to make.

The answer to your second question is yes, if your eyes deteriorate after laser eye surgery you can go back to glasses or C/L's, or even have the surgery done again. However most surgeons will not operate without evidence your prescription is stable.