A type of refractive surgery bases of laser technique which is performed by expert-eye-surgeons to correct types of refractive errors is known as PRK. PRK stands for Photorefractive Keratectomy. And it is performed to treat or correct refractive errors of myopia (also known as nearsightedness), hyperopia (also known as farsightedness) and astigmatism. It, is one of the commonly performed surgeries, offers advantages over LASIK for some patients. Almost all types of laser eye surgeries or refractive error correction surgeries work by reshaping the cornea. PRK is also work by reshaping the cornea by using an excimer laser which allows light to enter the eye to be properly focused onto the retina for clear vision.
Let’s understand the difference between PRK surgery and LASIK surgery. Actually in LASIK surgery procedure a thin, hinged flap is created on the cornea to access the treatment area. On the other hand, in PRK surgery procedure the cornea’s entire epithelial layer which is an outer layer is removed to expose the area and no flap is created. In PRK surgery, procedure a corneal flap, which contains both epithelial and the deeper stromal tissues, is not created that is why the entire thickness of the underlying stroma is available for treatment. But, for both the procedures, PRK and LASIK, the excimer laser then sculpts the stromal layer of the cornea to correct refractive error.
In Sydney, PRK procedure is performed by highly experienced eye-surgeon. Procedure involves; an eye surgeon removes a central area of corneal epithelium with an alcohol solution, a “buffing” device or a blunt surgical instrument. Then, an excimer laser is used to precisely reshape the curvature of patient’s cornea’s surface. Computer-controlled highly specialized laser delivers pulses of cool ultraviolet light that remove microscopic amounts of tissue in a precise pattern.
Then, a soft contact lens or bandage is placed on the cornea. This helps in to protect patient’s eye. Typically within a week’s time, new epithelial cells grow back post which the bandage contact lens is removed by eye-surgeon or eye-doctor. People gather more necessary details regarding eye-clinic-center in Sydney, expert eye-surgeons, variety of laser eye correction surgeries and other treatment procedures offered by them and about the cost of the services.