What type of laser is widely used in refractive corneal eye surgery (LASIK) to reshape the anterior cornea with sub-micron precision?
Answer and explanation
Correct answer: D. Argon-Fluoride Excimer Laser
- Step 1: In LASIK, precise tissue ablation without thermal collateral damage is mandatory. Step 2. The 193 nm ultraviolet ArF excimer laser breaks organic covalent bonds directly (photoablation) with nanometer accuracy without heating surrounding corneal stroma. Answer: Argon-Fluoride Excimer Laser (193 nm ultraviolet). Why not the others: CO2 laser causes thermal coagulation and burning; He-Ne laser is low-power alignment beam; Ruby laser was historically used for dermatology.
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More Medical Optics, Electrophysiology and Clinical Radiation questions
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