Difference in surgical procedure between LASEK and SMILE

Many people compare the pros and cons of LASEK and Smile surgery. For example, there are people who think that LASEK has an eye tracking device, so it’s safe for patients to move their eyes, and that smile surgery is not safe because it doesn’t have it. Wouldn’t smile surgery be safe because there’s no eye tracking device? Today, let me easily explain the difference between LASEK and SMILE surgical methods and check out the misknown common sense.

LASIK or LASEK surgery is performed with an ultraviolet laser called an excimer laser. The laser is operated by focusing a certain distance from the eyeball, so the equipment cannot hold the eyeball. If the patient’s eyes move during surgery, perfect vision results cannot be obtained, so there is an eye tracking device set that follows the laser along with the eye movement.

But it is slower than the actual eye movement. It can follow eye movements but cannot predict eye movements in advance. Nevertheless, it’s not a big problem. Even in the process of peeling and recovering the corneal epithelium, there is naturally a 0.25 diopter error, but the tracking error during laser irradiation does not have a significant impact on the results.

Smile surgery, on the other hand, uses a special device to hold the eye and fix it with pressure. Fixing the patient’s eyes can reduce errors than using a tracking device.
Even during LASEK surgery, if the patient’s cooperation is not good and the eyes are moved a lot, the eye should be fixed with a device for surgery.
It is not true that LASEK surgery does not have to fix the eyeball because it has an eye tracking device.

Smile surgery basically holds the eye with pressure and fixes it before laser. At this time, the pressure is not high, and the patient is less tired because only the middle of the cornea is slightly pressed.

There’s no need to argue what’s better or worse, eye fixation or eye tracking. Surgery to fix the eyeball must be precise, so there is a fixture. LASEK, which has a relatively large error range after surgery, can proceed with eye tracking without having to fix it. However, sometimes, depending on the degree of cooperation of the patient, LASEK also performs surgery with his eyes fixed

But what about the suction loss?

There are people who are concerned about suction loss, which relieves the pressure fixed to their eyes during smile surgery.
But if you choose an expert, the doctor will surely have the skills to control well so that you don’t become a suction loss in the event of a dangerous situation.

There are people who are concerned about suction loss, which relieves the pressure fixed to their eyes during smile surgery.
But if you chose an expert, the doctor surely can control well so that you don’t become a suction horse in the event of a dangerous situation.
For example, a delicate doctor can operate by adjusting the pressure little by little with an eye opening device and positioning the eyes. This is a basic skill that an ophthalmologist should have. On the one hand, the patient should be able to cooperate to the point of looking forward without much movement during an operation time of about 20 seconds