When I often brush up on laser myopia surgery, I will think: "How did they hold on?" "What if I blink and roll my eyes halfway through?" ”
In fact! Laser myopia surgery is not as scary as imagined!
In laser myopia surgery, blinking and turning the eyes rarely happens. In order to better cooperate with the doctor during the operation, before the myopia surgery, the young lady will guide the fixed eye practice, and the eye opening time during the operation is very short (the real operation time is about 2 minutes per eye), as long as you practice more before the operation, you can easily keep the eyes not blinking and not turning.
oneWhat should I do if I can't blink my eyes during surgery?
Before the operation, the eye will be anesthetized by drops with anesthetic effect to the eye surface, which will have the effect of local anesthesia of the eye, and the eye will feel less sensitive, and the eye will be able to open and see things on its own, and the upper and lower eyelids will be pulled apart and kept in the proper position. Under this "double protection", it is difficult to close the eyes without blinking deliberately and vigorously.
II. II. II, laser myopia surgeryWhat happens when the eye rolls?
No matter what kind of surgery it is, you should do fixation training at home before the operation, and simulate the operation in advance to better cooperate.
At the same time, during surgery, the eyeball will be immobilized by the constant negative pressure, and it will not be able to rotate unless it is moved with force. Even if the negative pressure is lost due to eye movement, the laser will automatically pause.
The laser has the function of positioning and tracking. Under the positioning and tracking of the iris, even if the eyeball is slightly deviated, the laser can automatically track the operation to complete the operation. If the movement is too large, the machine will automatically pause after recognition and will not affect the eyes.
IIIWill the laser damage other eye tissues?
In myopia correction surgery, two types of excimer laser and femtosecond laser are commonly used
l Smart all-laser surgery uses only excimer lasers;
l Half femtosecond uses excimer laser + femtosecond laser;
l ReLEx surgery uses only one type of femtosecond laser.
The excimer laser is a gas-pulsed laser with a narrow range of laser absorption, and the laser is almost completely absorbed by the corneal epithelial and stromal layers during surgery, usually without causing damage to other tissues.
A femtosecond laser is a type of laser that is emitted in the form of pulses and lasts for a very short time. Its principle is that the infrared laser pulse triggers an optical blast, which causes the formation of vacuoles, which realizes the disconnection of the tissue in the focused area, and thus makes a "lens" without harming other tissues.