Which is safer, full femtosecond or half femtosecond?

The surgical principle design indicates that the safety and efficacy of full femtosecond surgery are better than those of half femtosecond surgery, but the two surgical methods have their own advantages and disadvantages. The specific analysis is as follows:

ReLEx surgery is a small incision, and the corneal tissue sheet in the eye is removed through the femtosecond laser, so as to achieve the effect of correcting myopia, and at the same time, due to the small incision, the corneal stability is better and the corneal damage is smaller. Half-minute surgery is to first use a half-femtosecond laser to cut the flap on the surface of the cornea, and the doctor will remove the flap and perform a conventional laser to cut the cornea, which leads to greater stability and damage to the cornea due to the large flap.

ReLEx surgery is safe for military personnel or athletes and does not cause flap loss due to minor trauma. For ordinary people, if they do not have more sports and do not engage in dangerous occupations, the effect after half-femtosecond surgery is also better, and the cost performance is higher. Therefore, according to different groups of people and economic conditions, different surgical methods can be selected**.

Click to test if I'm suitable for myopia surgery].

If you want to know more about myopia surgery, it is recommended to consult Guangzhou Yinghua Ophthalmology. Yinghua Ophthalmology is a chain brand ophthalmology specializing in myopia correction surgery, the hospital has invested heavily in focusing on myopia correction research and **, and has a series of innovative measures in the hospital environment, expert equipment, medical service surgery, etc. Such as:

Through one-to-one service, one doctor per person, one plan per person, postoperative fixed-point tracking, etc., everyone with myopia correction needs can enjoy high-quality and customized myopia correction services.

In terms of the results of the surgery, the results of the two surgeries are the same, and basically the vision will reach the left and right the next day after the surgery. In terms of healing time after surgery, femtosecond is faster than femtosecond.

Instead of making a corneal flap, the corneal stromal lens is made and then removed through a tiny incision of 2-4mm. ReLEx laser can reduce the damage to corneal nerve fibers, reduce the impact on corneal biomechanics, greatly reduce the probability of dry eye and complications, and thus improve the quality of vision.

ReLEx is safer. If you need to have laser surgery, it is recommended to choose Guangzhou C-MER Ophthalmology.

Compared with femtosecond myopia surgery, there are the following differences:

1. Quanfei micro-incision, corneal stability, 2mm incision is naturally less damaged than 20mm corneal flap, the overall resistance of the cornea is high, and more corneal nerves are retained, so that postoperative dry eyes and glare are less.

2. There is no risk brought by the corneal flap, the corneal flap should be made in half a femtosecond, and the corneal flap will fit back after surgery, but if the cornea is accidentally hit by external force, there is still a small probability that the corneal flap will re-dehisce and displace. Without a corneal flap, ReLEx does not have the above concerns.

3. The recovery time of the full flight is short, and you can usually use your eyes normally on the same day, for the same reason.

4. High requirements for doctors, half femtosecond setting instrument parameters, accurate positioning can be operated.

The key to ReLEx surgery is also the removal of the cut stromal lens from the 2mm incision, so a qualified ReLEx surgeon must have extensive experience in other laser surgeries.

Guangzhou C-MER Ophthalmology.

Based on providing high-end lean medical services for refractive correction and diversified diagnosis and treatment of eye health for children and adolescents, it has international equipment such as comprehensive refractor and imported femtosecond equipment, and has set up a special eye health science education base, and has also introduced a professional ophthalmology digital diagnosis and treatment system to build an ophthalmic transparent operating room and provide personalized visual diagnosis and treatment programs.

From a safety point of view, it is definitely safer to be full femtosecond, because of the development of the times, the technology is becoming more and more advanced, and the minimally invasive small incision, **, recovery is relatively fast.

The recovery is also very fast, and the pain is relatively not very severe, but the only drawback is the presence of a corneal flap. If there is a trauma or special circumstances, the corneal flap may be displaced, so it is safer to be full femtosecond from a safety point of view.

First of all, the ReLEx concept is correct, but the current technology is not mature enough to allow for personalized cutting, and all corneas are the same. The postoperative visual quality is not as good as LDV all-laser myopia surgery, and the safety is not as good as that of more than 500,000 cases of LDV all-laser myopia surgery (ReLEx cannot be operated again, and problems cannot be remedied, while LDV femtosecond has no such problems). Compared with the full femtosecond laser, femtosecond laser myopia surgery represented by LDV is currently the mainstream, and the surgical cost is much lower, the safety is higher, and the postoperative effect is controllable.

So there is no need to spend more money, and there is a bigger risk, it is not worth it, I personally recommend myopia surgery with LDV femtosecond laser. I am also a beneficiary of what I do at Mingshi.

The difference between half-fly and full-fly surgery itself is:

These two are the two most mainstream surgical methods in myopia laser surgery.

The main differences are the different groups of people who are suitable for the surgery and the different surgical steps.

Suitable for people: semi-flying: myopia: 75-1400 degrees; Astigmatism: within 600 degrees, corneal thickness above 450, eye conditions are qualified.

Full flight: myopia: 150-1000 degrees, astigmatism: within 300 degrees, corneal thickness is recommended to be above 480, and other eye conditions are qualified.

These two surgical methods are safe and stable. In fact, for myopia surgery, it has a history of more than 30 years, in other words, it has also been affirmed in clinical application in terms of technology, stability and safety. First of all, a comprehensive and strict preoperative examination before myopia surgery is the first prerequisite to improve the safety of surgery.

In general, we will do more than 20 preoperative examination items, such as visual acuity, computerized optometry, comprehensive optometry, slit lamp examination, corneal topography examination, dry eye examination, master examination, fundus photography, etc. In terms of recovery time, the recovery period of femtosecond laser surgery is about 1 week, if it is a conscription child, because the child will undergo strict training in the military camp in the future, it will inevitably collide with the eye, so this kind of femtosecond surgery is not suitable for this kind of child. ReLEx surgery is the fastest recovery of all procedures, and there may be some fog in the eyes on the same day, but it will be back to normal the next day.

Therefore, for conscription children and college entrance examination candidates, ReLEx will be more suitable for them. In short, the current safety of myopia surgery has been affirmed at the national level, and we should consider not only the first, but also the doctor's qualifications and doctors' skills. In addition, it is necessary to choose the surgical method that suits you, so that it is more conducive to postoperative recovery.

Relatively speaking, it is better to do ReLEx laser myopia eye surgery, but you need to check the condition of the eye before doing it, mainly check the thickness of the cornea, the power of the eye, and the condition of the fundus.

From a technical point of view, ReLEx is definitely better than DeLEx because ReLEx requires a corneal flap that cuts through the entire thickness of the cornea, especially the Descemet's layer, which has an effect on the strength of the cornea after surgery. The femtosecond only needs to make a small incision to remove the excess transparent cornea from this incision, so the damage to the corneal structure is relatively small, and the corneal strength after surgery does not change much compared with before the operation, so the femtosecond is better than the half femtosecond.

Femtosecond is a minimally invasive method with a very small incision of only about two millimeters, which is safer than half femtosecond. The incision of the femtosecond surgery is large, and the corneal flap is made with femtosecond, and then the excimer laser is cut and then the corneal flap is put back on, so the incision will be relatively large.

Comparatively speaking, a full femtosecond will be a little better than a half femtosecond. Half femtosecond is the most commonly performed femtosecond surgery in medicine, and it relies entirely on lasers. ReLEx is performed with two laser scans, an incision is made with a special machine and the corneal tissue is removed.

With the rapid development of medical science and technology, myopia surgery has become very mature. Whether it is a complete femtosecond surgery or a half femtosecond surgery, the surgical method that suits you is the most suitable. "ReLEx" laser surgery:

There is no need for a corneal flap or an excimer laser for the entire procedure. Instead, the femtosecond laser** is used to blast the cornea at different depths and levels to completely shape the corneal stroma to be cut, and then remove the corneal stroma through a small incision of 3mm to complete the operation. Theoretically, the surgical process of ReLEx is more in line with the psychology of most myopia patients, but the adaptation conditions are relatively limited, only suitable for 100-1000 degree myopia, and astigmatism cannot be done.

Half femtosecond is widely used in clinical practice, and all-laser femtosecond surgery is the best choice for a variety of people. ReLEx: The laser scans two corneal stroma at different depths to form a complete lenticular corneal tissue.

A small incision is then made at the edge of the cornea with a special instrument, and the corneal tissue that has been done before is removed. The surgery was done.