Although LASIK can be performed off label, I wouldn't do it for a 13 y.o. My main concern is that younger people, especially those under 18 years of age, have very placid corneas. Placing and incision in this young of cornea while making the LASIK corneal flap puts the cornea at risk for instability and later ectasia. That said, however, if all other factors were normal and there was plenty of corneal thickness, I would consider PRK instead of LASIK since no corneal flap is necessary for PRK. I would seriously consider this for a 13 yo who is highly anisometropic (and thus unable to wear glasses) and who would be unable to wear a contact lens safely.