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While LASIK eye surgery is the most performed eye surgery in the world, PRK was the first. The popularity of each laser eye surgery method varies from country to country, but PRK remains widely available in most places. According to the Department of Health, PRK is one of the two most performed laser eye surgery procedures in Australia.
Read on to find out everything you need to know about PRK eye surgery.
PRK, or photorefractive keratectomy, was developed in the 1980s and is the foundation of all methods of laser eye surgery, including the popular LASIK procedure. PRK is also known as ASLA (advanced surface laser ablation).
PRK is a refractory correction technique used to treat short-sightedness, long-sightedness and astigmatism. PRK is often recommended for patients whose thin corneas or dry eyes make them ineligible for LASIK.
Laser eye surgery is generally considered to be safe and effective, but there are risks associated with any surgical procedure.
PRK laser eye surgery can correct the following common errors within a certain range:
In addition to having one of the above refractive errors, you must meet some basic criteria. To be eligible for laser eye surgery, you must meet the following criteria:
PRK is a four-step procedure involving the following:
PRK generally costs $2,400 to $3,400 per eye or $4,800 to $6,800 for both eyes. The total cost of PRK surgery depends on the severity of your refractive error, clinic location, the technology used by the clinic and the surgeon’s experience. You may be given the option of treating each eye separately over two procedures or treating both eyes together. It used to be more common to treat one eye at a time, but PRK is now usually performed on both eyes at the same time. While having two separate procedure allows some patients to take less time off work, the cost will be higher.
Some laser eye surgery clinics charge one upfront cost covering the initial consultation, diagnostic testing, procedure, medication and follow-up visits. Other clinics charge individually for each aspect of the procedure. Make sure to ask your clinic or surgeon for a detailed breakdown of the cost of your PRK eye surgery. While the high price of PRK eye surgery may seem prohibitive, laser eye surgery actually costs less than a lifetime of contact lens use and glasses for most people. Many clinics also offer payment plans to help reduce the financial stress of laser eye surgery.
PRK eye surgery is a relatively quick same-day procedure. Doctors recommend refraining from using contact lenses and eye makeup for a period of time before surgery.
When you arrive at your laser eye surgery clinic you will be taken to a procedure room and may be given a mild sedative. Numbing eye drops will be applied to your eyes so that you will not be able to feel any pain during the surgery.
PRK surgery generally only takes 5-10 minutes per eye. You will be awake during the procedure. A speculum will be used to keep your eyes open while your surgeon performs the procedure and corrects your refractive error. Most patients don’t consider the procedure to be painful, but some report feeling pressure on the eye.
Your surgeon will cover your eye with a contact-lens-like bandage. This bandage is usually worn for a few days during healing until new epithelial cells grow back. You will likely be given antibiotics and pain medication to reduce pain and minimise the risk of infection. You will not be able to drive after PRK surgery so make sure to arrange transport home. Most people arrange to take time off work to rest and heal.
You will have a follow-up appointment within the first few days so that your surgeon can check your healing and remove the bandage from your eye or eyes. According to the Health Services Research Unit at the University of Aberdeen, the epithelium is usually healed within three to four days.
Your doctor will schedule additional follow-up appointments in subsequent weeks and months.
It may take up to six months for your vision to fully stabilise, although you should be able to return to most activities, including driving, within a few weeks. Some patients continue to wear glasses for improved vision while their eyes are healing.
PRK eye surgery is considered to be one of the safest surgical procedures in Australia. While the chance of serious complications is very low, patients do commonly report side effects such as hazy vision and glare, especially during the healing process.
PRK eye surgery has the following potential side effects, complications and risks:
According to the Health Services Research Unit at the University of Aberdeen, 81% to 100% of PRK patients achieve 6/12 vision or better and 26% to 82% achieve perfect 6/6 vision or better. Follow-up studies of PRK patients indicate these results are stable after the first year.
Successful PRK surgery will result in patients being able to see clearly without contact lenses or glasses.
LASIK is the most commonly performed laser eye surgery in the world and, along with PRK, one of the two most popular laser eye procedures in Australia. Like PRK, LASIK (or laser-assisted in situ keratomileusis) is used to treat short-sightedness, long-sightedness and astigmatism. Unlike PRK, LASIK involves creating a flap in the top layer of the cornea, which is folded back to reveal the corneal bed and refractive error below.
LASIK has a significantly faster healing time than PRK. Most patients have relatively stable vision and can resume most daily activities within 24 hours of the LASIK procedure. LASIK is also generally considered to be less painful than PRK. LASIK has a slightly increased risk of surgical complications due to the creation of the corneal flap, which can become lost or damaged during surgery. LASIK is also not suitable for those with dry eyes or thin corneas. Many patients qualify for either PRK or LASIK, but some people may qualify for both procedures and are able to choose between the two.
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