2015 Volume 36 Issue 1 Pages 33-38
There are two kinds of lasers for a corneal surgery. As for one, excimer laser which is ultraviolet ray’s laser, the other is femtosecond lasers which is the near-infrared light laser. Without involvement by heat denaturation and the impulse, we resect and cut a living cornea by photoablation, photodisruption exactly.
A cornea is clear tissue, the diameter is approximately 12 mm and the central thickness is about 500 μm. A cornea has two roles, one is the outer transparence surface and the other is a lens for optics. Treatment of the corneal opacity includes phototherapeutic keratectomy and keratoplasty, and the treatment of the corneal irregularity includes wavefront-guided corneal ablation and intracorneal ring segments.
