whatlaser eye surgerysight perscription you can have to get laser eye surgery?

i am 15 years old & my eyesight is -5. it gets worst yearly. im afraid that by the time i am 18, my eyesight will be so bad that i wont be able to get laser.
so what is the lowest number it can be that i will still be able to get laser?

You think your eyesights bad? I’m 14 and I’m -8.5. Not joking. But I want to know the answer to this question too.

Person below me, how old was your friend? Because I’m almost there.