This gave rise to the standard Roman depiction of the river as a powerfully built reclining god, also named Tiberinus, with streams of water flowing from his hair and beard. The River Tiber was also believed to be the river into which Romulus and Remus (the former founded Rome) were thrown as infants.
PRK was the first surgical procedure developed to reshape the cornea, by sculpting, using a laser. Later, LASIK was developed. The same type of laser is used for LASIK and PRK. Often the exact same laser is used for the two types of surgery. The major difference between the two surgeries is the way that the stroma, the middle layer of the cornea, is exposed before it is vaporized with the laser.
Your eye doctor might also ask you to wear a shield over your eye at night until your eye heals. You'll be able to see after surgery, but your vision won't be clear right away. It takes about two to three months after your surgery before your eye heals and your vision stabilizes.llustration of LASIK eye surgery. LASIK eye surgery is performed using a laser programmed to remove a defined amount of tissue from your cornea. With each pulse of the laser beam, a tiny amount of corneal tissue is removed. The laser allows your eye surgeon to flatten the curve of your cornea or make it steeper.