Not following RK, or radial keratotomy, came an innovative new technique for shortening
the focal length of the nearsighted eye itself. This was the long awaited PRK, photorefractive keratotomy. The procedure reshapes the cornea, in effect, shortens the focal length. kinh ap trong cao cap han quoc
A laser with low-heat UV radiation removes corneal material literally microscopic layers throughout the kinh ap trong cao cap han quoc
day. kinh ap trong han quoc The procedure is robotic; the laser is pre-programmed, literally vaporizing a few molecules with every pulse from just the ideal place on the corneal flooring.