What is the difference between femtosecond surgery and laser surgery

The eye is a very important organ in the human body. Many people will have vision problems after using electronic products for a long time or using eyes excessively. In order to solve this problem, many people choose laser surgery or femtosecond surgery. So, what's the difference between these two operations?

Operation principle

First, let's understand the principles of laser surgery and femtosecond surgery.

Laser surgery is to change the diopter of the eye by cutting the cornea with laser, so as to achieve the effect of correcting vision. Excimer laser is usually used in laser surgery. During surgery, the laser passes through the corneal surface to remove certain tissues, thus changing the shape of the cornea.

Femtosecond surgery is accomplished by femtosecond laser technology. Femtosecond laser is a high-energy and high-precision laser, which can accurately cut the tissue on the cornea without damaging the surrounding tissue. Therefore, femtosecond surgery does not require mechanical cutting and has less restrictions on corneal thickness.

In general, laser surgery changes the shape of the cornea through cutting, and femtosecond surgery changes the shape of the cornea through precise cutting.

Surgical effect

From the surgical effect, both laser surgery and femtosecond surgery can effectively correct vision problems.

Laser surgery can be completed in a relatively short time. Generally, patients will gradually recover their vision within a few days after surgery. However, laser surgery may cause some side effects, such as dry eyes, light perception, edge effects, etc.

In contrast, femtosecond surgery has a shorter recovery period and less surgical trauma because it does not require mechanical cutting. Femtosecond surgery is very accurate in corneal ablation, which can more accurately correct vision problems. However, femtosecond surgery is expensive, and not all hospitals provide it.

intended for

There are also some differences between the population suitable for laser surgery and femtosecond surgery.

Laser surgery is applicable to a series of vision problems such as myopia, hyperopia, astigmatism and presbyopia. However, laser surgery may not be effective for people with high myopia or thin cornea.

Femtosecond surgery has a wider range of applications due to its precise cutting ability. It is not only suitable for myopia, hyperopia and astigmatism, but also for more complicated eye problems such as corneal diseases. For people with high myopia and thin cornea, femtosecond surgery is a safer and more effective choice.

Summary

Laser surgery and femtosecond surgery are two common methods in modern ophthalmic technology. Laser surgery uses laser to cut the shape of the cornea, while femtosecond surgery uses femtosecond laser to precisely cut the cornea to correct vision.

Although both operations have good corrective effects, femtosecond surgery is relatively more accurate and has a shorter recovery period. However, femtosecond surgery is expensive and has a relatively narrow scope of application. Therefore, patients should choose suitable surgical methods according to their own conditions when choosing surgical methods.

Whether laser surgery or femtosecond surgery is selected, the patient should be carried out in a formal professional hospital. The doctor will make a comprehensive assessment based on the patient's condition and give a good surgical plan. At the same time, during the recovery period after surgery, patients also need to strictly follow the doctor's guidance to avoid fatigue and eye irritation, so as to ensure the stability and reliability of the surgical effect.