Do I need 20/20 vision?

No, but your vision must be 20/70 or better and correctable to 20/20
Does laser eye-surgery disqualify me from becoming a pilot?

Lasik is disqualifying at this point for fighter pilots. The only refractive surgery allowed (with a waiver) is PRK.

What is the age limit?

The age limit for UPT candidates is 30 years of age. Already commissioned officers need to have less than 5 years of commissioned service. There is a waiver process for candidates who do not meet this requirement.