Is ReLEx laser surgery safe for myopia?

Safety,"The commonly used laser surgery at this stage is superficial surgery, which only makes a fuss on the cornea. The myopia lens is a concave lens, and the procedure is to grind the middle of the cornea, which is equivalent to making a lens on the cornea. Zhai Changbin said, "Comparing the eyeball to a basketball, surgery is equivalent to scraping on the surface, and it has no effect on the ball."

Since it is only a "superficial article" and does not touch the deeper tissues, it has no effect on fundus diseases, lens lesions, etc., and will not increase the incidence of these eye diseases.

For every 100 degrees of myopia reduction in ReLEx surgery, the cornea only needs to be thinned by 12 microns. The corneal thickness of a normal person is generally between 500 and 550 microns, and it can still be guaranteed to be within a safe range after surgery. If the cornea is too thin to be suitable for laser myopia surgery, lens implantation surgery (ICL surgery) may also be considered.

ICL surgery is generally suitable for patients with thin corneas, abnormal corneal morphology, or myopia higher than 1200.

Myopia surgery has been developed for 20 years, and the technology is very mature and relatively safe. However, there is no way to completely eliminate the postoperative impact at present, and if you want to do myopia surgery, you must be mentally prepared for this.

Common postoperative effects of myopia surgery:

1. The corneal flap is off-center, the corneal flap is not in good alignment, the corneal flap is folded, and the corneal interlaminar debris or blood remains.

2. The laser cutting is off-center, and the corneal knife cuts through the cornea.

3. Postoperative lifelong glare and dazzling: myopia is more common in height, and there is halo when looking at things.

4. Under-correction or over-correction: This situation will require re-operation, and it is not ideal after re-operation.

5. Vision**: Especially for people with high myopia, vision begins to decline a few years after surgery.

6. Best-corrected visual acuity decline: After surgery, it is not possible to achieve the visual acuity that can be achieved with glasses.

7. Dyslexia, dry eyes, decreased corneal sensitivity, pain.

8. Irregular astigmatism: Almost all people who have myopia surgery have varying degrees of irregular astigmatism after surgery.

9. Corneal infection, diffuse interlamellar keratitis, formation of corneal insula.

10. Degeneration or scarring of the corneal periphery, corneal center pigmentation.

The best way to avoid surgery is to detect myopia in time**. Expert advice: In the early stage of myopia, as long as the bad eye habits are corrected in time, and combined with oral eye vision nutrients, it can be well controlled or improved for a period of time, and it can be done without adult surgery.

With nearly ten years of experience, myopia eye surgery is relatively safe.

1) The patient's head position cannot be in the normal position;

2) severe dry eye syndrome, Sjögren's syndrome;

3) Severe ocular appendage lesions, such as eyelid defects and deformations, severe eyelid insufficiency;

4) uncontrolled glaucoma;

5) Active ocular lesions or contamination of the eye;

6) keratoconus or suspected keratoconus;

7) cataracts that seriously affect vision;

8) Severe corneal diseases, such as obvious corneal scarring, corneal opacity, marginal corneal degeneration, corneal stroma or other corneal diseases; Ocular trauma, after corneal transplantation, after radiation keratotomy;

9) After corneal resection surgery or with a history of trauma, severe ocular surface or fundus lesions;

10) Presence of systemic connective tissue diseases or autoimmune diseases, such as systemic lupus erythematosus, rheumatoid arthritis, etc.;

11) Known anxiety, depression and other serious psychological and psychiatric diseases;

12) Diseases that cannot cooperate with examinations or surgeries;

13) Severe hyperthyroidism or hyperthyroidism, etc.

Myopia surgery is not something that everyone can do, and the following conditions must be met:

Age 18-55 years;

In the past two years, the degree of myopia has been relatively stable;

The thickness of the cornea should be sufficient, and the pupil should not be too large or too small;

No other serious eye diseases, such as dry eye, glaucoma, etc.;

Women cannot undergo myopia surgery while breastfeeding;

The surgery can only be performed through various preoperative examinations and the doctor's inference, and vice versa.

1. Those with too high myopia.

Generally speaking, the best results are achieved within 1000 degrees of myopia in the range of ReLEx surgery**. For patients with too high myopia, it is best to choose ICL lens implantation to correct high myopia.

2. The cornea is too thin.

First of all, you should know the location of ReLEx surgery** myopia. ReLEx surgery**Myopia is a remodeling of the cornea, which requires the ablatation of a part of the corneal stromal layer, or the removal of the corneal stromal lens, so there are certain requirements for corneal thickness, which generally requires the corneal thickness to be greater than 500 microns.

3. Those with active ocular diseases.

ReLEx surgery**Although myopia is only a routine operation on the cornea, if you have blepharitis, acute conjunctivitis, corneal ulcer, keratitis, dacryocystitis, stye and other active eye diseases, you should be active before surgery**, and surgery can only be considered after the condition is controlled. In addition, patients with eye diseases such as keratoconus, glaucoma, and corneal endothelial degeneration cannot undergo ReLEx surgery. 4. Those with contraindications to systemic surgery.

In addition to the above three points, the patient must not suffer from autoimmune diseases, diabetes and other diseases that will affect wound healing; Patients with scarring constitution cannot be operated on. In addition, patients who are very concerned about the idea of surgery and cannot cooperate well with the doctor's operation cannot do the full femtosecond surgery.

It is necessary to do a good examination before surgery.

In many people's imagination, it takes a long time to have an operation, but this is not the case with full femtosecond and half femtosecond surgery. ReLEx and femtosecond surgery are minimally invasive surgeries, the time is very short, the whole operation, femtosecond is about six or seven minutes, half femtosecond is about ten minutes, of course, it also depends on the cooperation between the patient and the doctor and the doctor's professional and technical level.

Laser surgery for myopia is very fast, usually about 20 minutes for both eyes. The laser alone time is faster, from a few seconds to twenty or thirty seconds, if the power is large, it may be about 40s, so the excimer laser surgery is very fast, and there is no pain, no pain, two orders of anesthesia can be done, so the patient should not be nervous.

You can use your eyes normally on the second day after femtosecond surgery, and it will not affect your normal life. Wash your face three days after femtosecond surgery, you can use facial cleanser and makeup for a week, and you can apply eye makeup after one month. You can swim for three months.

Adults who have already reached adulthood may consider myopia correction surgery to improve their vision.

Myopia laser surgery is generally more than 10,000 yuan, myopia surgery is divided into 2 categories, laser and lens implantation, and lens implantation surgery is generally 2-30,000 yuan.

According to your actual situation, you can choose a specialized hospital for myopia surgery, you can consult on the official website or **.

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The whole process of a person's operation only takes 10 minutes, of which more than 9 minutes is related work after disinfection and eye medicine before surgery, and the time of the real surgical laser is only about tens of seconds.

Soon, the actual operation process is actually a few seconds, plus the preparation process such as disinfection and verification of personal information, the whole operation time does not exceed 10 minutes.

All surgeries have certain risks, and this will be told all your life before the surgery, and an agreement will be signed, so if you want to do it, try to find a professional doctor, but if you can avoid surgery, try not to do it.

ReLEx surgery: Two laser scans of different depths are performed on the corneal stromal layer to form a complete convex lens-shaped corneal tissue, and then a small incision is made at the edge of the cornea with special instruments to remove the corneal tissue that was previously made, and the surgery is completed.

Half femtosecond: femtosecond laser flap making-excimer laser cutting-reduction, the operation is over.

ReLEx surgery is currently very immature, and if it is done now, it is similar to being a guinea pig; LDV is good, more than two-thirds of the national surgery volume, and the huge postoperative group ensures the reliability of the operation; The cost is recommended to go to the hospital for consultation, the difference between the two is very big, the whole femtosecond is expensive, the postoperative effect can not be guaranteed, and the postoperative complications are not able to ** (the reason for the new technology), which is currently limited to deceiving the rich and increasing the reputation of the hospital.

The number of Da Vinci LDV femtosecond laser femtosecond surgeries exceeds 500,000 cases, and the annual surgical volume exceeds 100,000 cases, accounting for more than 2 3 cases in the country. The corneal flap is made with femtosecond laser, and the patient's vision recovers quickly after surgery; Wound healing is perfect and fast, the program design is safe and reliable, and the patient gets better visual quality; ReLEx is relatively rare in China, and the safety cannot be compared with LDV femtosecond laser, so LDV femtosecond laser is better and safer.

All-femtosecond and all-laser are, of course, all-laser safer. The ReLEx laser is just a gimmick of Zeiss, and the number of surgeries that are really carried out with ReLEx in China is pitiful. ZEISS spends most of its time making corneal flaps with excimers.

But the money collected is ridiculously expensive, all of which are more than 20,000 yuan. All-laser refers to the combination of a femtosecond laser and an excimer laser to complete a myopia laser surgery. At present, the most femtosecond lasers in China are the Da Vinci femtosecond lasers in Switzerland, with more than 100 domestic installed units and more than 500,000 femtosecond surgeries, accounting for 2 3 of all femtosecond surgeries, including full femtosecond.

The effect is also quite good.

The femtosecond laser has just been on the market, the technology is not mature, and it cannot be personalized cutting, and the postoperative visual quality is not good, while LDV femtosecond. At present, the number of surgeries on the market is the largest, and the postoperative patient feedback is also very good, and it is much cheaper than full femtosecond, so choosing LDV femtosecond is your choice without regrets. Thank you.

LDV is recommended here

Femtosecond lasers. First of all, the ReLEx technology is immature, and it is impossible to personalize the cutting and postoperative visual quality.

Not as good as LDV.

Laser myopia surgery.

The safety is not as good as that of more than 500,000 cases of LDV all-laser myopia surgery. Secondly, at present, all-laser myopia surgery represented by LDV is the mainstream, and the cost of surgery is much cheaper than that of ReLEx, which is expensive, has poor safety, and cannot guarantee the postoperative effect.