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As mentioned, in PRK, no layer is removed from the cornea, and no incision is made. Instead, only a slight surface ablation of the cornea (about 50 microns) is performed, and the laser is then applied to the cornea. After the procedure, the epithelium regenerates in a few days. The advantage of this method is that the corneal strength is less affected, and the chances of corneal thinning and irregularities are reduced.
In PRK, since the surface layer of the cornea (epithelium) is removed, it takes more time for this layer to heal. During this time, the patient’s vision may still be blurry, and they may experience pain, burning, and excessive tearing. The recovery of vision is relatively slow.
In LASIK, a thicker layer is removed from the cornea and this layer is then placed back onto the cornea as it is. Since the layer is complete and no scratch is made on the surface of the cornea, the healing process is faster. Vision recovery is quicker after the surgery, and there is less pain and burning sensation
As mentioned, in LASIK, a thicker layer called the “flap” is removed from the cornea using a device called a “microkeratome,” which works like a rasp. The incision made on the cornea may reduce its strength and cause complications in the future. In addition, the microkeratome device doesn’t always perform the flap removal perfectly, which may lead to complications during the flap removal process that are irreparable. However, this does not mean that LASIK is a high-risk procedure. The rate of complications in this method is also very low
These procedures are similar to PRK and only have minor differences compared to it. Initially, it was believed that these procedures were superior to PRK, but over time, it became clear that they are quite similar. It is worth mentioning that Parsian Clinic was the first center in the country to adopt and perform the “Epi-LASIK” technique. However, currently, we prefer the PRK technique over LASIK and Epi-LASIK due to its simplicity and effectiveness.
Laser eye surgery performed on the cornea consists of two stages: the first stage is preparing the cornea, and the second stage, which is the main stage, involves shining the laser beam. Unfortunately, the naming of these procedures is based only on the first stage. In PRK, only the surface layer of the cornea, called the “epithelium,” is removed, and then the laser is applied to the cornea. In LASIK, however, a thicker layer, about 150 microns thick, is removed as a flap from the cornea, and after the laser treatment, this flap is placed back in its original position. The second stage of both procedures is the same, and both are performed using a type of laser called an excimer laser.
The LipiFlow device is not available in Iran, and instead, we have the E-Eye device, which works with the IRPL method and is more effective, as it also addresses the underlying cause of dry eyes.
The possibility and type of surgery are determined based on vision measurement, corneal performance, and the doctor’s consultation, according to the surgeon’s opinion.
The surgeries, typically LASIK, take about 10 to 15 minutes. These are all common and currently performed laser methods, and depending on the eye, one or all types of surgeries may be suitable. The superiority of one type of surgery depends on the eye’s condition, and all types of laser surgeries are performed worldwide.
Femto LASIK is essentially an advanced version of LASIK, and the issues encountered with traditional LASIK are largely addressed with this method. In this technique, instead of using a mechanical microkeratome blade to create the corneal flap, an advanced laser called the “Femtosecond” laser is used. As a result, all stages of the surgery are performed with the laser. This method shares the benefits of traditional LASIK, such as rapid visual recovery and pain-free experience. Additionally, since the corneal flap created is very thin, it also has the advantages of PRK. Currently, Parsian Clinic is the first and only center in the country that utilizes this technique, in line with advanced centers worldwide.
No, in medicine, no surgery or treatment can be guaranteed. However, it can be said that the success rates of these procedures are high.
The likelihood of achieving this goal is over 90%, but these procedures are not 100% predictable, and there may be some residual prescription left, requiring glasses in certain situations. The aim of these procedures is to reduce your dependence on glasses. However, there is a high chance that you may not need glasses at all.
The probability of achieving this goal is above 90%, but these procedures are not 100% predictable, and it is possible that some of your prescription may remain, and you might need glasses on some occasions. The goal of these procedures is to reduce your dependency on glasses. However, there is a high likelihood that you may not need glasses at all.
No! Presbyopia is a natural phenomenon that occurs in healthy individuals over 40 years old. However, individuals who are nearsighted tend to experience presbyopia later, depending on the degree of nearsightedness. In fact, nearsighted individuals who are at the age of presbyopia can read without glasses. But after correcting nearsightedness, as their eyes return to a normal state, they will naturally experience presbyopia in older age, like all healthy individuals.
