Is the surgery safe?
Excimer laser treatment for myopia is an external eye surgery and is relatively safe. The procedure has been performed overseas for more than 20 years. The U.S. National Food and Drug Administration (FDA) has approved excimer laser correction after a long and rigorous review, and has confirmed that the procedure is safe and effective. Current studies have concluded that the laser itself has no side effects on the internal tissues of the eye, and there is no reason for sequelae to occur after several years of treatment.
How does laser treatment for myopia work? Is it stable?
The vast majority of patients have their heavy glasses removed once and for all, and their post-treatment naked eye vision is generally at or near their pre-treatment corrected vision with glasses. If the pre-treatment myopia is stable and the anterior and posterior diameters of the eyes are no longer elongated, myopia will not reappear after treatment. This wonderful laser makes it possible for the flattened front surface of the eye not to regenerate and become convex again, so the treatment is stable.
Does the excimer laser burn the cornea?
The excimer laser is a very short wavelength ultraviolet light that has a photochemical rather than a thermal effect on biological tissue, so there is no heat damage, let alone burning.
Will it damage the rest of the eye?
Today’s best excimer laser devices have an infrared eye 3D active tracking system that automatically stops the laser when your eye deflects beyond the normal range of 0.02 microns, ensuring safe treatment.
Will it recede after laser treatment?
There are many myopic patients who have mentioned the same or similar questions. The process we currently call laser treatment for myopia is done by sculpting the cornea at the very front of the eye. This part of the cornea used for treatment does not have the ability to regenerate, unlike other tissues in our body such as: hair, which has the ability to regenerate. Years of theory and practice have proven that the flattened surface of the eye will not regenerate and become convex again with this wonderful excimer laser, so the treatment is generally stable and will not rebound. If the myopia has been stable in recent years and the anterior and posterior diameters of the eyes are no longer long, and if postoperative care is taken to protect the vision, myopia will not reappear after treatment.
Can all myopic patients undergo excimer laser refractive surgery?
Not all myopic patients can undergo excimer laser refractive surgery. A rigorous preoperative examination and screening is required. Active inflammatory diseases in the eye need to be cured before surgery can be performed. Patients with immune disorders, allergic diseases, cone corneal, glaucoma, fundus disease, dry eye and other eye diseases are not suitable for this surgery.
Will my vision recede after surgery for frequent computer users?
You can use the computer after surgery, but be careful to control the time and pay attention to the combination of work and rest. After using your eyes for 40-50 minutes, let your eyes rest for 15 minutes, look at the distant scenery and do eye exercises.
How long does the surgery take?
It takes about 20 minutes from the time you enter the operating room to the time you come out. After removing the time for sterilization, testing the machine, inputting the appropriate surgical data, and post-operative observation, the surgery is usually performed on the patient’s eye in less than 5 minutes and he or she can go home the same day.
How long after the surgery can I work normally?
The speed of recovery varies with each of the techniques currently being performed. Generally speaking, LSAIK/SBK and wavefront aberration + iris positioning are the fastest to recover, and most of them can use their eyes normally the day after surgery, and their vision has improved greatly, although this varies for individuals depending on individual differences. Others (Epi-LASIK, LSAEK) require a break of about three days, and the recovery of vision is gradual.
Will middle-aged patients not be suitable for myopic laser surgery because they may have presbyopia to offset myopia in the future?
This is a misconception. Presbyopia is caused by a decrease in the ability to adjust when looking close. However, presbyopia and myopia do not cancel each other out. That is, if your myopia is under 200-300 degrees, you do not need to wear presbyopic glasses for reading in the future after the age of 50, but you still need to wear nearsighted glasses when you want to see far away. If middle-aged or older people need to do close work for a long time and have less than 200-300 degrees of myopia, they may not need myopia treatment. However, if you are highly nearsighted, you can still have LASIK treatment to eliminate the need for glasses when you look at a distance, while reserving some degrees for reading, or just wear light presbyopic glasses.