My defect is -6.0 and -4.75, I am 24 years old, when could I undergo the procedure, is it possible to completely eliminate the defect, and what method would I have to undergo?

24 years is already the right age to undergo laser vision correction. If the defect is stable and the qualifying tests are positive, you will be able to have the procedure performed. I will be able to say which method is most appropriate in your case only after the tests.