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What is the difference between femtosecond myopia surgery and femtosecond cataract surgery?

Posting time:2022-12-02 06:58:10

What is the difference between femtosecond myopia surgery and femtosecond cataract surgery?

With the popularization of myopia surgery and cataract surgery, more and more people have heard of professional terms such as femtosecond and femtosecond laser-assisted cataract surgery. But most people are not quite clear, what exactly is a femtosecond? What are the benefits of the application of femtosecond technology? What is the difference between femtosecond myopia surgery and femtosecond cataract surgery? Let's take a look at the professional answer from Wang Yong, Vice President of Aier Eye Hospital Affiliated to Wuhan University. ▼Video loading... In general, femtoseconds are first and foremost a concept of time, and femtoseconds are only one quadrillionth of a second. Secondly, femtosecond laser refers to a pulsed laser, which has the characteristics of precision and safety. Therefore, femtosecond laser technology is widely used in various fields such as environment, information, medical treatment, and industry. When femtosecond lasers were used in eye surgery, it was hailed as "another advance in surgical technology." Femtosecond laser realizes "surgery-free surgery in the whole process", and pushes all laser eye surgery to a new height that is more accurate, safer and clearer. ▍What is the difference between femtosecond myopia surgery and femtosecond cataract surgery? First, femtosecond myopia surgery uses a femtosecond laser to ablate the cornea, thereby changing the curvature of the cornea. After the light enters the eye, it is refocused on the retina to achieve the purpose of myopia correction. It is an ocular surface surgery that does not affect other tissues inside the eyeball. Femtosecond cataract surgery means that in cataract surgery, the key steps such as corneal incision, annular capsulorhexis, and nuclear chopping that need to be manually performed in traditional phacoemulsification surgery are automated, thereby reducing the damage to eye tissue and postoperative trauma. Complications such as inflammation and infection are also greatly reduced, and the patient's vision recovers faster after surgery. ▍What are the advantages of femtosecond cataract surgery compared with traditional surgery? First of all, femtosecond cataract surgery has changed from traditional manual operation to computer display-guided operation by 3D OCT imaging. The surgeon is intelligently controlled by the computer throughout the whole process, and the accuracy is from the previous millimeter level to the micrometer level; secondly, femtosecond In cataract surgery, femtosecond laser is used instead of scalpel to make corneal incision. Compared with traditional scalpel, the incision made by femtosecond laser is very precise, and the precise incision has good airtightness and reduces the risk of postoperative infection. Third, the lens nucleus pre-chopped by femtosecond laser is easier to be crushed and sucked out, which reduces the use of ultrasonic energy during surgery, thereby reducing the damage to the eye tissue, and the surgical complications are greatly reduced. Finally, because the capsulorhexis designed by the doctor is completed by a computer-controlled femtosecond laser, the size and position of the capsulorhexis are more accurate, and the tension resistance of the capsulorhexis is better. A more suitable capsulorhexis can make the centering of the intraocular lens better and more stable.

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