With the application of laser technology in eye surgery, femtosecond and femtosecond have become common options for correcting myopia. They differ significantly in a number of ways, and understanding these differences can help patients make decisions that are better for them.
Principle of surgery: The main difference between femtosecond and femtosecond is the use of lasers and the way the cornea is treated. ReLEx relies entirely on a femtosecond laser, which removes the corneal tissue in the form of a lens by performing two scans in the corneal layer. Femtosecond, on the other hand, combines a femtosecond laser and an excimer laser to first create a corneal flap and then cut the corneal tissue.
Surgical features and advantages: The advantages of ReLEx are its minimally invasive and fast postoperative recovery. Because no corneal flap is made, the incision is smaller, reducing the risk of postoperative infection and the incidence of dry eye is low. The advantage of femtosecond is that it has a wider correction range, and it can also provide effective ** for patients with high myopia.
Surgery time and operation: Full femtosecond surgery is usually shorter than half femtosecond surgery because it is done on a single instrument, simplifying the surgical process. However, half femtosecond needs to be performed on two instruments and may require a slightly longer surgical time.
Suitable for: ReLEx is usually suitable for patients with low myopia, about 800 degrees or less. The correction range of femtosecond is wider and can be used for myopia below 1000 degrees.
Safety and complications: ReLEx has a high safety profile, with faster postoperative recovery and fewer complications. Since no corneal flap is made, ReLEx avoids the risk of postoperative flap displacement. Although the corneal flap is made by Half Femtosecond, as long as strenuous exercise is avoided, the occurrence of complications can also be reduced.
In conclusion, femtosecond and femtosecond have their own characteristics and advantages. When choosing a surgical method, patients should fully understand the characteristics, suitable population, and potential risks of both surgeries, and have a detailed discussion with the doctor to make the most suitable decision for them. Regardless of the surgical modality chosen, it should be ensured that a thorough examination and evaluation is performed before surgery to ensure the safety and effectiveness of the surgery.
ReLEx laser surgery