Similarities and differences of PRK and LASIK laser eye surgery
With the highly-developed technologies of vision treatments, people nowadays are opting to take laser eye surgery to treat their eye problems as laser surgery can take certain eye problems away completely. However, for most people, they just know two of the most common laser surgeries — PRK and LASIK, but they are confused what these eye surgeries actually are and which one is better. The following will give a brief introduction of PRK and LASIK on their similarities and differences in the hope of giving people some help on understanding of laser eye surgery.
PRK is short for Photorefractive Keratectomy. LASIK stands for the laser-assisted in situ keratomileusis. The similarities of them are they are both refractive eye surgeries. Compared with other surgeries, they are less risky. And for certain eye problems, they can move the problems away thoroughly.
The differences of both laser eye surgeries are as following: First, they use different ways to treat eye problems. PRK involves sculpting to change the surface of the eye. While LASIK uses the laser to treat myopia, hyperopia and astigmatism, a flap is cut on the eye to allow the laser to get behind to perform the remodeling instead of sculpting. Second, compared with LASIK, PRK is more risky. PRK makes use of PK procedure and radial keratotomy. It is realized by surgeons using scalpel to reshape the cornea. So we can see the surgeons’ experience also plays a role in it. Considering the pain and recovery time, LASIK is more excellent. LASIK is painless, while PRK is a little painful. And people with PRK laser eye surgery usually need more time to recover.
Therefore, when people consult in surgeons which laser eye surgery is better, surgeons generally recommend LASIK as it indeed has some outstanding advantages over PRK. But this does not mean all eye problems should be treated with LASIK eye surgery. That is because for some eye problems, PRK is the only option you can choose, which means LASIK can not work well with certain eye problems.
Above all, both PRK and LASIK have their own advantages and disadvantages. We can not say which one is definitely better. So before taking the laser eye surgery, it is advised to talk with your eye doctor. Then eye doctor will recommend the suitable surgery to you according to your eye problem, which will be good for treating your eye problem appropriately and effectively.
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The Advancement of Laser Eye Surgery
If we have some eye problems, we can choose to receive eye surgery. However, in the surgery, no scalpel will be used, but laser. The Excimer laser plays the same role as scalpel in the surgery. Laser surgery is also suitable for those who can not receive scalpel surgery.
Generally, eyeglasses and contact lenses are the commonest solutions for nearsightedness and farsightedness. Of course, laser surgery is also suitable and effective for the two problems. But for sufferers of other complicated eye problems, like astigmatism, those glasses and lenses are not so ideal. On the contrary, LASIK surgery is the best alternative.
In laser surgery, every detail is operated in an accurate way. Safety is also another very important feature of this surgery. The recovery time is very short and receivers can enjoy perfect vision after the surgery. In the surgery, the inner cornea will be reshaped by the laser.
Generally, cutting cornea with laser will lead to great risk. And luckily, this has been much improved in the accuracy of the surgery now.
In U.S., there are no less than one million receivers of laser surgery with very high success rate, almost 80%.
In the past, the surgery on the cornea requires greatly on the surgeons and almost no people can receive it. And now, the emergence of laser surgery has solved all such problems.
Some merits of laser eye surgery have attracted many people to receive it, like the great success rate, short recovery time, etc. Several days after the surgery, receivers can have very good vision. However, this surgery is very expensive. If you earn a lot of money, you can consider of receiving it.
One of the most important steps in the surgery is to find the just right surgeon. It is true that there are more and more surgeons for LASIK. Therefore, it is essential to confirm the identification of the surgeon, including the equipments for the surgery. Also, it is a very good idea to listen to other’s feedbacks on the surgeon.
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Disadvantages of Laser Eye Surgery
LASIK (laser in-situ Keratomileusis) and PRK (photorefractive Keratectomy) are both types of laser eye surgery which are widely praised by sponsored reviews, articles and press releases. The stories that athletes giving up contacts after eye surgery and the comments that eye surgery is easy, safe and better than contacts or spectacles greatly encourage people to do the laser eye surgery to completely get rid of contacts and spectacles.
However, is the laser eye surgery that good and effective? Let us see some facts first.
- Laser eye surgery may cause more than the correction of eye focus, which may induce eye pressure, too. Excessive pressure in the eyes, which is the symptom of glaucoma, may lead to eye blindness. Medium cases of eye pressure can be treated with drugs to decrease the pressure, but requiring the measure of eye pressure every interval set by the ophthalmologist. Severe cases cannot be cured by only drugs, and should refer to eye surgery to improve the drainage of excess fluid in the eyes. This kind of surgery is always carried out with the help of laser bursts. Sometimes it needs the more advanced microsurgical cutting.
- The procedure of corneal reshaping during the laser eye surgery contains the removing of bits and pieces of eyes. If the bits cannot be put back properly, you still have to wear contacts or spectacles to correct refraction errors and more seriously your eyes may be under great risk. So US military members are not allowed to take the surgery to avoid any damage to eyes.
- Not every surgery can have very satisfactory result. Though LASIK industries claim that the success rate of laser eye surgery can be as high as 95%, actually a part of the correction vision is only 20/40, which is legal to drive in most states. The situation is everyone is born with 20/20 vision, though the 20/40 vision is achieved by laser eye surgery, people may still feel uncomfortable, not to mention that the current result cannot last for your whole life, which has the same effect with the deeper degree of your spectacles with the time going. So if your eyesight becomes bad again, what can you do? I think re-surgery must not be a good choice.
Then is there a more safer and convenient way to improve eyesight? Luckily, a relatively new technology ICL (Implantable contact lenses) is introduced to alternate the traditional LASIK and PRK. In ICL, a lens is inserted in front of your lens or even replaces your own eye lens, which is located behind the pupil. It is a faster and easier error correction comparing with LASIK and PRK. The key point is ICL can be reversed and updated if your eyesight deepens. So it is considered the best choice to improve people’s eyesight. If you decide to take the laser eye surgery, you should know more about ICL through internet.
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Precautions after laser eye surgery
Many people with vision problems are expecting a laser eye surgery to provide them with increased freedom. Removing eyeglasses or contact lenses is quite significant to certain groups of people. In order to get the best possible visual results, it is quite important for laser eye surgery recipients to follow good aftercare steps.
It is a common sense that a fast and proper recovery is essential to achieve satisfactory surgical results. There are a lot of precautions proposed for patients after laser eye surgery. And a fundamental criterion is to follow instructions from the surgeon.
Medications prescribed by the surgeon should be strictly followed. These medications can be critical in preventing postoperative eye infections. Proper intake of medications is a decisive part of surgery aftercare.
Protection of the post-surgery fragile eyes is overwhelmingly necessary. There are potential irritants during the day or night, which should be prevented from entering the eyes. Eye irritation can considerably affect the healing process of the eye. Sunglasses or patches are helpful in shielding the eyes from scraping and other injuries.
Dust and wind are believed to be harmful to laser eye surgery patients. What’s more, it is also necessary for those patients to drink lots of water in order maintain hydrated. Scratching and touching the eyes during the healing period are also needed to be avoided. Some activities can particularly stain the postoperative eyes, including swimming, going to hot tubs as well as driving. These small steps are also an indispensable part of aftercare.
Proper and complete rest after the surgery is very important. Enough rest can not only ensure a fast and effective recovery, but also help the patient reduce the risk of getting injured. Furthermore, women patients are required to avoid make-ups during the healing period because these substances may cause irritation.
Patients of laser eye surgery should always exactly follow the advice and precautions after the surgery. They are essential to ensure visual benefits from laser eye surgery.
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Potential risks and complication of laser eye surgery
Except for visual benefits and technological improvements of laser eye surgery, there are still certain risks and complications of the surgery. Patients who are considering a laser eye surgery should be very clear of both the surgical options and potential risks through making a thorough discussion with the surgeon. Some problems are widely reported on corrective laser eye surgery.
In most cases, laser eye surgery can create clear vision and remove the need of eyeglasses or contact lenses. However, the surgery can not ensure a 100% success rate that there are still certain vision correction issues. It is hard to predict the level of effectiveness of a specific surgery. In very rare cases, some people report a worsened vision or little effect from the surgery. And some patients can still not get rid of corrective lenses.
Corneal haze is another side effect that occurs during the healing process of PRK or LASIK procedure. Corneal haze can cause a fuzzy and affect the vision. Fortunately, this condition is usually not serious and will go away on its own. No permanent visual effect will be left. However, there are also rare cases that corneal haze does not resolve itself, which requires further laser treatment.
Eye infections are also rare in laser eye surgery. Common consequences of an eye infection include discomfort and delayed healing process. Modern technologies can actually control the infection rate at a quite low level.
Halo effect is also one of the potential complications of LASIK or PRK procedure. It is widely known that halo effects usually occur in low light and dark conditions. Those LASIK recipients who suffer halo effect always have difficulty in night driving. Actually this effect is caused by the pupil enlarging.
Flap complications are only possible in LASIK recipients, because only LASIK cut a corneal flap during the surgery. Potential flap complications include damage to the flap and complete loss of the flap, which are caused by flap detachment or tearing.
Some patients also report that the visual effects of laser eye surgery gradually regress over time. In this case, a second surgery is needed.
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Risks of Laser Eye Surgery
Laser Eye surgery is a popular methods to solve vision problems, such as correcting nearsightedness. With the development of laser eye surgery technology, the risk of getting side effects has reduced greatly for the past years. However, it doesn’t mean laser eye surgery is totally safe now, although some of its supporters still think that it is completely safe when the most advanced technologies are used during the laser eye surgery.
There are many kinds of complications after laser eye surgery. So if you are one of the patient who is considering undergoing laser eye surgery, it is time to become aware that there are risks involved in laser eye surgery. And it is necessary for you to know the possible type of eye problems that can occur after this laser eye surgery procedure.
Following are some of the common laser eye surgery side effects that patients have encountered.
Dry Eyes is probable the most common laser eye surgery problems which means your eyes lose the ability of keep moist by their own. Though this is not a really serious problem, dry eyes may also lead to irritation or even eye pain that causes severe discomfort to the patient. When dry eyes occurred, external lubrication and moisture are usually needed for the eyes.
Besides, many people may experienced oversensitivity to light after laser eye surgery. When this eye problem happens, the patient has difficulties to see or even open eyes under powerful daylight. And it is dangerous for those patients to drive if they are suffering from this eye problem caused by laser eye surgery.
Since laser is very powerful, any mistakes may cause severe injury to the eyes. The worst condition is that after the laser eye surgery patient may completely lose their vision, which is irreversible.
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