Lasik (excimer laser in situ keratomileusis) and Lasek (excimer laser epithelial keratomileusis) procedures are procedures that change the refractive surface of the cornea and are effective laser vision correction procedures for myopia up to -12 diopters, farsightedness at low diopters and astigmatism. In addition, the results of both procedures can vary depending on the wound response of the cornea, so it is not a procedure that always has a certain level of stability, and the cornea or the state of the eye must also reach a period of stability in terms of achieving maximum visual acuity. Also, some people experience pain after surgery. In contrast, ICL surgery is designed to be used for the full range of nearsightedness and farsightedness, and in the same way as cataract surgery, where the lens is widely and commonly used, the transplant is performed in the eye, so the ophthalmologist is well aware of the wound healing process. This is what makes ICL surgery more precise than laser refractive surgery, which operates on the cornea. That is, the techniques used to determine the appropriate amount of ICL to be implanted are the same as those commonly used by ophthalmologists in cataract surgery. Unlike laser refractive surgery of the cornea, which must be reoperated after vision loss, ICL vision can remain unchanged for a long time after surgery. Because ICL can be implanted with very small cuts under drop anesthesia, vision recovery is much faster than with Lasik (excimer laser in situ keratomileusis) or Lasek (excimer laser corneal epithelial resurfacing) procedures. While the Lasik and Lasek procedures make permanent changes to the cornea in order to obtain refractive correction, the ICL procedure only places refractive lenses in the path of light passing through the patient’s eyes. In other words, even if the ICL is not the right size, there is no harm and it can be replaced with a new ICL of the right size after the ICL is removed. Advantages of ICL surgery 1. Very fast recovery time. 2. No side effects caused by the flap in Lasik (excimer laser in situ keratomileusis) surgery. 3. No worsening of ocular dryness. 4.Less inconvenience such as glare or halos at night. 5.It can be removed again at any time after abnormalities appear. 6.The ability to adjust to close distances can also be obtained.