All contact lens wear must be stopped well before the day of surgery. RGP, semi-hard or hard contact lens users should stop wearing them at least two weeks before the procedure. Soft contacts users should stop one week before. This is because contact lenses are worn on the cornea and will temporarily change the shape of the cornea slightly, but significantly enough to affect the results of the surgery. Make-up, perfume or hair-care products must not be worn or used on the day of surgery. The vapors emitted by these may interfere with the sensitive laser. Also, have someone follow you on the day of surgery. You should not drive immediately after the procedure as vision will be slightly blurry.