SMILE eye surgery, which is the short form of Small Incision Lenticule Extraction, is the last generation of eye refractive error correction surgeries. The procedure is used to to correct nearsightedness and astigmatism. It is a combination of both LASIK and PRK that can correct up to 10 diopters of nearsightedness with 5 diopters of astigmatism.
In SMILE eye surgery, the latest generation of the femtosecond laser is used, which is a proprietary technology of Carl Zeiss Meditec called VisuMax femtosecond laser.
The surgeon uses a femtosecond laser to create a small disk-shaped tissue within the cornea. Then, with the same laser, a small incision (normally 2 to 4 millimeters) is made in the surface of the cornea through which the disk tissue will be extracted. The differences between SMILE procedure to other refractive error procedures are:
Please note that SMILE eye surgery cannot correct significant amount of farsightedness and astigmatism. If you want to correct these types of refractive errors please check Femto-Lasik, LASIK, LASEK and PRK.
First of all, the ophthalmologist examines the eyes to determine if the patient is a good candidate for SMILE eye surgery. Here are the tests:
We recommend you the following steps before the procedure:
At first, to prevent the patient from feeling any pain during the surgery, the nurse makes eyes numb by dropping anesthesia eye-drop into patient’s eye. A device will be used then to keep eyes open and not let the patient blink. It will let the surgeon perform the surgery more easily.
The surgeon uses VisuMax femtosecond laser to make two incisions in the depth of 120 microns or lower on the cornea surface. These two incisions make a small, disk-shaped tissue within the cornea. By using the same laser again, the surgeon creates a small arc-shaped incision in the surface of the cornea and extracts the disk tissue (lenticule) through it.
The procedure changes the shape of the cornea and corrects the nearsightedness very quickly. No stitches are needed and the corneal incisions will recover in a few days.
The patient is ready to get back home and rest for a few days.
The corneal incision in SMAILE is 2 to 4 millimeters compare to Lasik which is 20 millimeters.
Pain, mild irritation or itching are normal after the any type of eye surgery. However, SMILE eye surgery has less recovery time and less pain compare to Lasik. You will not feel any discomfort after 3 to 5 days.
Don’t use cosmetic contact lenses till 3 months after the surgery
People with a history of eye disease or eye surgery