Laser used in LASIK-: (A) Excimer, (B) Argon, (C) Holmium, (D) Nd-yag
Answer is A. Excimer (excited dimer) lasers are used in photo refractive keratotomy (PRK), LASIK and phototherapeutic keratectomy. Mechanism : produce UV light of very sho wavelength which breaks chemical bonds of biologic materials, conveing them into small molecules that diffuse away. Ref: AK Khurana 6thE pg462