What age do you have to be to have refractie eye surgery beacuse in my left eye I have 1.75 and in my right I have 2.50. How is it performed aswell?

18-21. The typical minimum age is 18 to 21 depending on the procedure. More important than age is having a stable glasses prescription for at least 1 year. It is performed using a lasik laser to reshape your cornea, lots of details on that on the internet.