LASIK surgery is used for astigmatic correction as well as simple myopia by the use of the excimer laser. An excimer laser corrects simple myopia by restructuring the Cornea. Greater laser energy is applied to the central cornea as compared to the peripheral cornea usually accomplished by closing or opening a circular aperture or alternatively by using a scanning laser to focus the pulses on the central region. The final result is a convex surface caused by the central stroma of the Cornea getti 更多
