What is the difference between femtosecond surgery and laser surgery in Nanjing Aier Hospital?

• Make an appointment
• Consulting price
• Online consultation

What is the difference between femtosecond surgery and laser surgery in Nanjing Aier Hospital?

The eye is one of the most important organs of human visual perception, but due to the existence of myopia, hyperopia and other eye problems, many people need to be corrected by surgery. As a professional ophthalmic medical institution, Nanjing Aier Hospital provides two different corrective methods, namely femtosecond surgery and laser surgery. This article will elaborate on the differences between the two kinds of surgery from four aspects: the principle of surgery, the durability of curative effect, machine equipment, risks and side effects.

Operation principle

Femtosecond surgery uses femtosecond laser to separate corneal tissue layer by layer through a light knife, and then correct it by accurate positioning and etching of the laser. This kind of surgery is completely based on computer simulation, which can accurately control the depth and diameter of the cut, greatly reducing the risk of surgery.

Laser surgery is to use laser beam to cut the cornea and correct vision by changing the shape of the cornea. This method can correct quickly and accurately, but there is a certain mechanical error due to the high cutting control accuracy of femtosecond surgery.

Efficacy persistence

Femtosecond surgery has more lasting correction effect. Because femtosecond surgery can control corneal incision more accurately, the corneal shape after surgery is more regular, and the postoperative vision is more stable and lasting. This means that the patient is unlikely to have a recurrence after surgery.

In contrast, the efficacy of laser surgery is slightly less durable. Since the shape of the cut cornea cannot be precisely controlled as that of the femtosecond surgery, the patient may have slight changes in the shape of the cornea after surgery, resulting in a certain degree of fluctuation in vision.

machinery equipment

Femtosecond surgery requires the use of dedicated femtosecond lasers. This equipment has an accurate laser beam control system and advanced scanning laser technology. Femtosecond laser can focus the laser beam to a smaller area to achieve more accurate cutting.

Laser surgery mainly uses traditional laser treatment equipment, such as excimer laser. These devices are relatively simple in operation, but may not meet the high-precision cutting requirements of femtosecond surgery.

Risks and side effects

Femtosecond surgery uses laser to cut the cornea, and there is almost no impact force contacting the cutting interface when cutting, so the surgery is less traumatic and the recovery is fast. Moreover, due to the accurate cutting control of femtosecond surgery, the postoperative risk and side effects are less, and the risk of postoperative infection is extremely low.

In contrast, laser surgery has a strong impact when cutting the cornea, so the recovery is slow after surgery. In addition, because the shape of the cornea cut by laser is not as accurate as that of femtosecond surgery, there is a risk of slight fluctuations in postoperative vision.

To sum up, there are significant differences between femtosecond surgery and laser surgery in Nanjing Aier Hospital in terms of operation principle, efficacy durability, machine equipment, risks and side effects. Femtosecond surgery has higher cutting accuracy and longer curative effect, while laser surgery has the advantage of simple operation. Therefore, when choosing the surgical method, patients should consider their own conditions and doctors' suggestions comprehensively to choose the most suitable correction method.