2-4 weeks. Usually there is an improvement in the first week, then some blurriness with further healing and then more improvement to the best vision in the next few weeks.
Depends. This depends on the level of refractive error which was treated. Your uncorrected vision will likely be better than prior to surgery within 2-3 days (after the cornea has healed and the contact lens is removed) unless you had only a mild prescription before. The vision will then continue to clear over the next few weeks as corneal inflammation subsides with steroid use.
Pretty quickly. Vision returns rapidly in most cases no matter how laser correction is done. Prk using chemical or mechanical removal of the corneal surface usually takes 5-7 days to completely recover, typically with the assistance of a bandage contact lens! Recovery from lasik, whether done with a mechanical microkeratome (flap maker) or a femtosecond laser, is much quicker, usually by the next day!
A number of things. Refractive error that is not amenable to lasik, complete understanding the of results and limitations of the surgery, healthy eyes. Discuss this with your eye surgeon.
It isn't. I guess it depends on what you mean by expensive. Considering the benefits you stand to gain from enjoying life much less dependent on glasses or contacts; and the savings from not having to buy glasses, contacts, etc., many people consider prk a very good value. Most of my patients are thrilled with their new vision and think the surgery was well worth the money they spent.
PRK. This is one of the two major methods of laser refractive surgery to correct eyeglass needs. Lasik involves making a corneal flap and sculpting the inner corneal tissue into a new lens. Prk directly cuts through all layers to sculpt the new lens. Both produce essentiallly the same end result but lasik is more comfortable for a week or so compared to prk. Prk is possible for some thinners eyes.
PRK Info. Prk (photorefractive keratectomy) is a traditional way of treating refractive errors, and has been used by doctors all over the world. During a prk procedure, tissue will be removed from the surface of your cornea and reshape the cornea according to your refractive error. This is all accomplished using the state-of-the-art visx excimer laser.
PRK. First it is determined if you are a good candidate for the procedure. Prk is done with eye drop anesthesia. You recline in a chair similar to a dentist chair, and an instrument is placed to hold the eyelids open. You look upward toward the laser opening. The surgeon checks the positioning, settings, and alignment, and proceeds with treatment. A bandage contact lens may be placed for comfort.
Many criteria. There are many criteria that establish candidacy for any refractive surgery. The prescription, the corneal thickness and curvature and the overall health of the eye are some of these. A consultation with an experienced surgeon is the best way to determine whether you are a candidate for vision correction surgery and which procedure is best for you.
Ophthalmologist. Many ophthalmologists in your area will offer this procedure if you are interested in being less dependant on glasses. Look for practices that offer LASIK, they can also perform PRK. They will evaluate you and let you know if you qualify for PRK. Good luck.
Depends. Prk over lasik is utilized when the lasik was performed more than 3 years previous and the patients has a significant residual prescription limiting their uncorrected vision.
PRK vs LASIK. Both prk and lasik can be used to improve vision. Both are equally effective. However, some patients with specific corneal conditions are not candidates for lasik, but can be candidates for prk.
Lasik and PRK. Various diagnostic test should be done in order to see if a person is the right candidate for either lasik or prk. Depending on a person's corneal thickness and corneal shape, these should be taken into consideration when deciding which procedure to do.