Principle and scope of application of femtosecond surgery
Femtosecond laser keratomileusis is a common ophthalmic surgery, which can be used to correct myopia, hyperopia, astigmatism and other vision problems. Its principle is to use laser technology to change the shape of the cornea by micro cutting and polishing the cornea, so as to achieve the effect of correcting vision. Femtosecond surgery is more accurate and safe than traditional laser surgery, so it has been widely used in the world.
Femtosecond surgery is applicable to myopia, hyperopia and astigmatism patients between the ages of 18 and 59. Whether it is suitable for surgery or not requires doctors to evaluate according to the patients' eye conditions and personal needs. Before the operation, the doctor will conduct a detailed examination of the patient's eyes, including the intraocular structure, corneal shape and corneal curvature, to ensure the safety and effect of the operation.
The advantages of femtosecond surgery are small trauma, fast recovery, slight pain, and relatively stable vision correction effect. After the operation, the patient does not need to be hospitalized, and can quickly resume normal life and work. At the same time, femtosecond surgery can also provide personalized treatment according to the different needs of patients and corneal conditions to improve the success rate and effect of surgery.
Common side effects of femtosecond surgery
Although femtosecond surgery has significant advantages in correcting vision, there may still be some common side effects. First of all, discomfort symptoms such as eye pain, tears, dryness and foreign body sensation may occur during the operation, but these symptoms usually disappear within a few days after the operation.
Secondly, short-term blurred vision may appear after surgery, which is caused by slight edema on the corneal surface after surgery. The edema will gradually subside in a few days, and the vision will gradually recover. However, in some patients, edema may last for a long time, leading to a longer time for vision recovery.
In addition, there is a certain risk of infection and inflammation after femtosecond surgery, although the incidence is low. After surgery, patients need to follow the doctor's instructions for postoperative care to avoid contact with pollutants and excessive eye use, so as to reduce the risk of infection and inflammation.
Complications and precautions of femtosecond surgery
In addition to the common side effects, femtosecond surgery may also cause some serious complications. For example, complications such as corneal infection, corneal ulcer and corneal fibrosis may occur during surgery, but the incidence of these complications is very low.
Before femtosecond surgery, patients need to inform doctors of their physical conditions, drug allergy history, eye disease history and other information to avoid potential risks. At the same time, after the operation, patients also need to carry out regular reexamination and eye care according to the doctor's recommendations to ensure the effect and safety of the operation.
For some patients with special circumstances, such as pregnant women, lactating women, patients with serious eye diseases or contraindications of laser surgery, femtosecond surgery may not be suitable, and comprehensive evaluation and decision-making should be made according to the specific circumstances.
Summary
Femtosecond surgery is a safe and effective ophthalmic surgery, which can correct myopia, hyperopia, astigmatism and other vision problems. Although there are some common side effects and potential complications, these risks can be controlled through doctors' accurate assessment and postoperative care. For hospitals, femtosecond surgery is a conventional and mature technology that can provide high-quality ophthalmic services for patients.
Therefore, for patients with vision problems, if they meet the surgical conditions and are evaluated by doctors as suitable for surgery, femtosecond surgery is a treatment option worth considering. At the same time, patients also need to fully understand the principle, scope of application and risks of surgery, follow the doctor's recommendations, and cooperate with postoperative nursing and reexamination to ensure the effect and safety of surgery.
