Photorefractive keratectomy (PRK) is a laser eye surgery procedure that is carried out with the key intent to correct a patient's vision. PRK permanently changes the shape of the frontal corneal tissue using an excimer laser, which is a high-precision ultraviolet chemical laser. The outer layer of the cornea (epithelium) is removed, and then a small amount of the corneal tissue is burnt off using the laser. Such an ablation renders the desired shape to the cornea and allows for optimal refraction.
PRK is a technologically advanced surgical procedure. For instance, a computer system tracks the eye position around 4,000 times per second, redirecting laser pulses for precise ablation. As mentioned above, the epithelium is removed prior to ablation. This does not hamper the patient's vision, since the epithelium is a soft and regenerating layer, which is capable of completely replacing itself within a matter of days. However, the deeper layers, once burnt off, will remain that way because they possess limited regenerative capability. This theory is the cornerstone of the Photorefractive keratectomy surgical procedure.
PRK differs from LASIK in a way that the epithelium is removed in PRK and allowed to regenerate. On the other hand, LASIK does not involve epithelium removal. Instead it consists of cutting a flap in the cornea in order to make the desired incisions. Compared to LASIK, a patient who has undergone PRK experiences more pain and recovery is slow. However, both procedures are similar in the respect that they make use of a laser.
Photorefractive keratectomy is a viable procedure, but it does have possible complications. Apart from slow recovery and pain, the patient may experience glares and halos. As in any refractive surgery, there is a possibility of over- or under-correction. Eye surgeons typically perform PRK on one eye at a time, in order to gauge the results of the procedure and ensure its efficacy.
In a majority of cases, PRK has proven to be a safe and efficacious procedure to correct myopia. However, since the procedure is irreversible, it is recommended that the patient consults an eye doctor instead of jumping on a conclusion.
Laser Eye Surgery India
The excimer laser that will be used to focus on your eyes during laser eye surgery may not really hit the target intended. The result of this might lead to side effects especially decentration. Although using tracking devices has never really stop the effects, most physicians are still working on methods to permanently solve the problem.
You may not like the hurly burly involved while going about wearing rigid contact lens if a surgeon recommends one for you after undergoing laser eye surgery. There is still an alternative choice for you to take so as to control that irregular astigmatism. Here, you may be advised to undergo a complete transplantation of your cornea.
You have undergone PRK laser eye surgery but you still rely on your lenses for sight. Not to worry, because after this type of surgery there are usually side effects that makes you see halos. This will definitely clear and you may stop using those lenses.
The costs you are paying for that laser eye surgery maybe different from that paid by your friend who underwent the same procedure. Yes, this might be attributed to the fact that you may not be residing in the same area, city or state; or the type of equipment used on you is different Moreover, the cost might be due to the fact that the skill of your surgeon must be taken into consideration.
Do you know that those contact lenses you are wearing only change the shape of cornea temporarily? But with laser eye surgery, your cornea will permanently be reshaped. Why is this? You may ask! This is because the shape of the cornea determines the kind of visual disorder that will be corrected.
Most doctors do not know much about laser eye surgery. Do you blame them? Not at all! The National Health Insurance Scheme (NHIS) does not cover laser eye surgery and these doctors work with NHIS. The details of this procedure really are not well known to most of them. So don't be amazed if your physician cannot tell you much about laser eye surgery. He may be under NHIS
Whether your concern is about the effect of laser eye surgery, the safety of the patients who just went through it, or the cost and location of laser eye surgeon, it will be advisable to speak to an expert in the field or your ophthalmologist or optician could be a ready help for you.
If you are into wearing make-up at all times, then you may not really need them as you plan to undergo laser eye surgery. The essence of removing make-ups is mainly to prevent infections on entering the eyes while the surgery is going on. Do yourself a favor at least for seven days before wearing make-up again.
Both Nicola Kennedy & Janetjonespapp are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
Nicola Kennedy has sinced written about articles on various topics from Mothers Day, Education and Culture. . Nicola Kennedy's top article generates over 110000 views. to your Favourites.
Janetjonespapp has sinced written about articles on various topics from Debts Loans, Personal Desktop and Alcohol Treatment. It doesn't matter how much you think you are aware as regards Laser Eye Surgery information like resources about. Janetjonespapp's top article generates over 135000 views. to your Favourites.
Acne Cures At Home While there are no clear connections with acne to a persons diet, your skin is the largest organ on your body and keeping your body healthy will naturally keep your skin healthy