The principle of femtosecond surgery for myopia
Femtosecond surgery is a method of correcting vision problems through laser technology. It uses laser to precisely cut the tissue on the cornea, change its shape, and restore vision. Compared with traditional laser surgery, femtosecond surgery has higher safety and accuracy. It can cut cornea more precisely and eliminate higher myopia or astigmatism, so as to achieve better correction effect.
Femtosecond surgery mainly includes the following steps:
1. First, doctors will use femtosecond lasers to generate a laser beam with very high power density.
2. Then, this laser beam will accurately cut the corneal tissue and change the shape of the cornea without damaging the surrounding tissue.
3. * After the cornea is reshaped, the light can be correctly focused on the retina, thus improving the far vision or near vision problems.
Advantages of femtosecond surgery for myopia
1. Predictable correction effect: With femtosecond surgery for myopia, doctors can accurately calculate the depth and angle of cornea cutting according to the patient's vision problems and individual differences, so as to predict the correction effect.
2. High safety: femtosecond laser will only act on corneal tissue during operation, avoiding damage to other eye structures. At the same time, due to the accuracy of the operation, femtosecond surgery can avoid postoperative complications such as chronic dry eye.
3. Rapid recovery: because the femtosecond surgery cuts the cornea more finely, the patient recovers quickly after surgery, and the vision can also be significantly improved in a short time.
Matters needing attention in femtosecond surgery for myopia
1. Pre treatment examination: Before femtosecond surgery, the doctor will carry out a detailed eye examination, including fundus examination, corneal topography, corneal thickness measurement, etc., to ensure that the patient's eye condition is suitable for surgery.
2. Postoperative nursing: after the operation, the patient needs to use eye drops regularly, and avoid eye rubbing, eye stress, bathing in water and other activities to prevent infection and other complications.
3. Follow up and reexamination: regular reexamination is required after surgery to ensure stable surgical effect, and timely find and deal with any potential problems.
The effect of femtosecond surgery on myopia
The effect of femtosecond surgery for myopia mainly includes the obvious improvement of vision and the reduction of dependence on glasses or contact lenses.
According to the actual data of XX Hospital, the hospital has carried out a large number of femtosecond surgery, and the vision of patients after surgery has significantly improved. Most patients' vision can recover to more than 1.0, and more than 90% of patients no longer need to wear glasses or contact lenses after surgery.
Summary
As an advanced method of vision correction, femtosecond surgery has significant advantages in the treatment of myopia. Through high-precision laser technology, it can predict the correction effect, reduce the risk of surgery, and recover quickly after surgery. However, before femtosecond surgery, patients need to be examined and consulted in detail, and postoperative care and reexamination should be carried out in strict accordance with the doctor's recommendations. By using femtosecond surgery to treat myopia, patients can obtain significant vision improvement, reduce their dependence on glasses or contact lenses, and improve their quality of life.
