What is the difference between PRK, Lasik, and Intralasik?
PRK (Photo Refractive Keratectomy) uses a computer controlled excimer laser without the need to make a hinged corneal flap. The surface epithelium layer of the cornea is painlessly removed with a sponge or brush to expose the layer below, Bowman’s layer. The laser light is then directed at the cornea, altering this layer. PRK patients wear a contact lens from three to five days or until the corneal epithelium heals. Additionally, PRK patients are placed on a regimen of drops (anti-inflammatory and antibiotics) for three to six months and require careful monitoring on a weekly to monthly basis. LASIK ( Laser Assisted in-Situ Keratomileusis ) uses a two step painless technique. A microkeratome is used to make a thin hinged protective corneal flap, this flap is folded back to expose the middle of the cornea, the stroma. Neither the epithelium nor Bowman’s layers are altered as in PRK. The laser light then removes tissue in the middle of the cornea. The protective flap is then folded back
