full femtosecond.
Professor Sha Xiangyin, director of the Department of Ophthalmology, the Second Affiliated Hospital of Guangzhou Medical University, pointed out that full femtosecond technology is the most advanced corneal refractive surgery mode in the world, with high safety and quick recovery, which is favored by many nearsighted people. Excimer laser can be called the first generation refractive surgery, half femtosecond is the second generation, and full femtosecond is the most advanced third generation in the world. In the first two generations of surgery, it is necessary to make a corneal flap first, lift it up like a can, and then cut the corneal stroma with laser.
The third generation full femtosecond laser does not need to be valved. Femtosecond laser can directly act on corneal stroma for point-like cutting, with little damage, and truly realize "valveless, knife-free and painless". Moreover, the operation process is very fast, and the actual operation process takes only 3 seconds after subtracting the steps of preoperative preparation and dropping anesthetic. Because of the small wound, quick recovery and high safety, there are fewer complications such as glare and dry eye after operation, which is especially suitable for people with special professional needs such as soldiers, policemen and athletes. Patients can use their eyes normally the next day after surgery on the same day.
Extended information:
Experts remind: Don't do laser myopia surgery too early
Because of the increasingly serious phenomenon of myopia in China, all-femtosecond myopia surgery is becoming more and more perfect, many parents hope to do surgery as soon as possible to help their children take off their glasses. However, Professor Sha Xiangyin pointed out that the best adaptation age for myopia correction surgery is generally between 18 and 5 years old. Teenagers under the age of 18, the cornea of eyeball is in the development stage, the axial length is also getting longer, and the diopter is not stable enough. Glasses are still an ideal choice and are not suitable for surgical treatment. In addition, full femtosecond laser surgery is suitable for patients with myopia less than 1 degrees, and ultra-high myopia is suitable for non-laser surgery.
In principle, besides age and degree restrictions, laser surgery generally needs to meet the following conditions: the refractive state is stable for more than two years; Corneal thickness is moderate; No keratitis, other eye diseases or systemic organic diseases affecting surgical recovery; The contraindication of operation was ruled out by preoperative examination. Therefore, myopia surgery is not "just do it if you want".
Resources: People's Daily Online-the peak of myopia surgery in summer. Experts: Full femtosecond surgery is safer.