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Answer: As mentioned above, in the PRK the layer of cornea (flap) is not removed and the shear is not given to it, and only after a small incision of the corneal surface (about 50 microns) the laser beam is radiated to the cornea, after surgery, epithelium is restored after several days. The advantage of this method is that the corneal strength will be less damaged and the possibility incidence of a thin cornea and irregularities are less.
Answer: In PRK Since the surface layer of the cornea (epithelium) is removed, it takes longer to repair this layer. During this time, the patient's vision is still blurry and may have pain, burning and watering eyes. Vision recovery is occurred relatively slow.
Answer: In Lasik, a thicker layer is removed from the cornea and after laser radiation this layer is returned to the cornea. Because this layer is complete and there is no scratch on the surface of the cornea, repair is done quickly and after the operation, the Vision recovery is faster and there is less pain and burning sensation.
Answer: As mentioned above, in LASIK, a thicker layer called "flap" is removed from the cornea by a device called "microkeratome", which acts like a grate. The cut on the cornea may reduce its strength and cause further complications in the future. Additionally, the microkeratome device does not always perform flapping well and may cause complications when removing the flap, which is irreversible. Of course, this does not mean, that LASIK is a high-risk operation. The incidence of complications in this method is also very low.
Answer: These procedures are similar to PRK and only have minor changes to this action. It was initially thought that these procedures were Preferred to PRK, but over time it became clear that these methods were similar. It should be noted that the Parsian Clinic was the first nation-wide center to serve and carry out the "EPI-LASIK" technique. However, we now prefer PRK technique because of the simplicity and effectiveness over the LASEK and EPI-LASIK techniques.
Answer: The laser eye surgery on the cornea consists of two steps, the first stage of the preparation of the cornea, and the second stage, the main stage, is laser radiation. Unfortunately, the naming of these acts is only selected based on the first stage. In PRK, only the corneal surface layer called epithelium is removed and then the laser is radiated into the cornea, but in LASIK, a thicker layer with a thickness of about 150 microns, is removed from the cornea as a flap, and then after the laser, this layer is returned to the first place. The second step is both the same and is performed by a laser type called the examiner laser.
Answer: Femto LASIK is actually an advanced LASIK, and the complications that can be seen with conventional LASIK have been greatly solved by this method. In this method, for the preparation of the flap layer, instead of using a blade and a mechanical Microkeratome, an advanced laser, the "femtosecond" laser, is used. So all the steps in this operation are done with the laser. This method has the advantages of LASIK, such as fast return of vision and lack of pain. In addition, because the layer removed from the cornea is very thin, it also has the benefits of PRK. The Parsian Clinic is the first center in the country, that using this method with the advanced centers of the world.
Answer: No, in medicine, no action and treatment can be guaranteed. But it can be said that the success rate of these acts is high.
Answer: The probability of reaching this goal is above 90%, but these are not predictable 100%, and it is likely that some of your eye number will remain, and for some times you will need glasses. The purpose of these actions is to reduce your dependence on glasses. Of course there is a chance that you do not need glasses at all.
Answer: The Probability of over 90% refractive error is corrected by one eye operation. Of course, some patients will need to have two or more surgeries. However, if your cornea is thin and does not have enough thickness, re-operation is not recommended. This depends on your doctor's opinion.
Answer: No! Presbyopia is a natural phenomenon and occurs in healthy people over 40 years of age. Of course, people who are myopia are more likely Later become Presbyopia, depending on their myopia. In fact, myopic people who are in the Age of Presbyopia can read without glasses. But after Correction of myopia, they tend to become Presbyopia over 40 years of age like other healthy people, because their eyes return to normal.
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