Abstract: laser myopia surgery is a very rigorous operation. There are a series of strict examinations before the operation. Each examination must meet the operation index before the operation, so the operation is safe and effective. If any examination does not meet the operation requirements, our doctor will not perform the operation. This can effectively avoid risks.
1. How many degrees can you do myopia surgery?
generally speaking, myopia below 1200 degrees and astigmatism within 600 degrees can be considered for laser myopia surgery.
2. Is it safe to do myopia surgery?
laser myopia surgery is a very rigorous operation. There are a series of strict examinations before the operation. Each examination must meet the operation index before the operation, so the operation is safe and effective. If any examination does not meet the operation requirements, our doctor will not perform the operation. This can effectively avoid risks.
3. What sequelae will there be after myopia surgery?
in fact, there are no sequelae after laser myopia surgery. Because the operation uses cold laser, it only acts on the cornea of the eye, and the cold laser will not burn the cornea; The wavelength of the laser is also very short and will not penetrate the cornea and damage other tissues and structures inside the eyeball. Therefore, there will be no adverse side effects on the internal tissues of the eyeball, and there will be no sequelae after several years of treatment.
4. Will myopia surgery hurt?
myopia surgery is performed on the cornea of the eye. There are no blood vessels on the cornea, only nerve endings. It only needs to drop surface anesthetic eye drops, so the subject can complete the operation in a few minutes without pain. After half an hour, there were some symptoms such as foreign body feeling and tears, but they would disappear soon, so there would be no pain as expected.
5. Is there an age limit for myopia surgery?
myopia surgery is generally suitable for myopia friends between the ages of 18 and 50, and needs to meet the stable growth of no more than 50 degrees per year.
6. How long does the myopia operation take?
only take about tens of seconds to play the laser and only a few minutes to lie on the operating table. However, some preoperative preparations should be made before the operation, including eye flushing and disinfection. The patient enters the operating room and comes out about 15 ~ 20 minutes.
7. What are the surgical conditions?
have clear requirements for mirror removal; Over the age of 18, the diopter has been stable in recent two years, and its development rate is no more than 50 degrees per year; The corneal thickness shall not be less than 450um, the diopter shall not exceed 1200 degrees for myopia, 600 degrees for hyperopia and 600 degrees for astigmatism; No active eye disease in eye examination; Have a complete and detailed understanding of the advantages and disadvantages of the operation, and the expectation of the operation results is in line with the reality; No autoimmune disease.
8. How long will it take to restore normal eye use and how much can vision be restored after operation?
can be used normally the day after operation. The stable period is about 1 ~ 3 months, which does not affect the normal life, study and work. Generally, there are no other diseases in the eyes, which can be restored to the best corrected visual acuity during preoperative examination. Most of them can be restored to the best corrected visual acuity during preoperative examination the next day after operation.
9. Are there contraindications to myopia surgery?
myopia surgery also has contraindications. Eye diseases must be excluded before operation. Intraocular pressure and cornea must be normal. Patients with severe diabetes, whole body connective tissue disease, immune dysfunction, scar formation and other symptoms need careful surgery.
10. What preparations should be made before operation? What are the precautions after
? Can you read books and watch computers? Stop wearing soft contact lenses for 1 week, hard contact lenses for 2 weeks If the corneal shaping lens (OK lens) is used for more than 4 weeks, the preoperative examination can be carried out. After the examination, the anti-inflammatory eye solution can be dropped for 1-3 days. After the operation, pay attention to no water in the eyes within 1 week, and the anti-inflammatory eye solution can be dropped in a standardized manner. You can study and watch the computer normally, but you can’t be too tired.
11. What problems should you pay attention to before the operation?
A. antibiotic eye drops shall be applied locally before operation to help reduce inflammation of eyes;
B. do not drive to the hospital alone on the day of operation, and pay attention to safety when you go home;
C. try to have a full rest the night before the operation to avoid eye fatigue;
D. does not use cosmetics, perfume, jelly water and other volatile substances on the day of operation.
12. Will myopia rebound after surgery? What if it bounces?
myopia surgery itself will not rebound. The laser is hit on the third layer (stromal layer) of the cornea. This layer of tissue has no regenerative ability, so there is no rebound. Generally speaking, paying attention to reasonable and healthy use of eyes after operation will not produce myopia. Of course, if myopia occurs for special reasons, the second operation can be carried out after the degree is stable.
13. Can I drive after surgery?
generally, the subject is not recommended to drive on the day of operation, especially at night. If the night vision has not been adapted, it should be avoided to drive at night.
14. What are the risks of myopia surgery? Although
operations are very safe, there are still some risks, including poor intraoperative corneal flap production; Undercorrection, overcorrection or regression after operation; Postoperative inflammation or infection; Postoperative glare, halo, etc.
15. What are the methods of myopia surgery?
at present, there are two kinds of clinically mature operations: one is corneal refractive surgery (laser surgery), and the other is posterior chamber intraocular lens implantation with lens (ICL).
laser surgery is mainly suitable for patients with medium and low myopia, and ICL surgery is mainly suitable for patients with high and ultra-high myopia.
Laser surgery is divided into matrix surgery (LASIK) and surface surgery (such as transprk); matrix surgery is mainly suitable for angle surgeryFor patients with sufficient membrane thickness, surface surgery is mainly suitable for patients with thin cornea and low myopia.
stromal surgery can be divided into: ① the older lamellar knife surgery (such as SBK), ② the newer femtosecond laser assisted LASIK surgery (referred to as half femtosecond), and ③ the latest femtosecond laser small incision corneal stromal lens removal surgery (referred to as full femtosecond).
16. What is the difference between full femtosecond laser and half femtosecond laser?
As the name suggests, the whole operation process of all femtosecond laser is completed by femtosecond laser without the participation of excimer laser. The corneal stromal lens is made by femtosecond laser, and then the stromal lens is taken out to correct ametropia. In particular, micro incision femtosecond laser corneal stromal lens removal is a minimally invasive operation. The incision is only 2-3mm. There is no need to worry about corneal flap displacement and loss caused by trauma after operation. It is especially suitable for military, police, athletes and other occupations. Half femtosecond laser surgery, that is, femtosecond laser assisted LASIK, first uses femtosecond laser to make corneal flap, and then excimer laser to cut corneal stroma to correct ametropia. Compared with SBK and LASIK, femtosecond laser corneal flap is safer, more accurate, more uniform and smoother.
17. With so many surgical methods, which one should I choose?
you should first improve the preoperative examination, including corneal topography, Pentacam, optometry, corneal thickness, fundus examination, eye a / B ultrasound examination, etc. combined with various examination results, you can see which operation method you are suitable for, and then choose the operation method according to your own economic conditions.
18. Can myopia surgery be reimbursed by medical insurance?
cannot be reimbursed because myopia correction surgery is optional and has not been included in the scope of medical insurance by the state.
19. How long will the operation be arranged after the examination?
it is best to check whether they meet the operation conditions two or three days in advance. Patients who meet the operation conditions order anti-inflammatory drugs and make an appointment for operation nearby.
20. How long is the postoperative review?
reexamination time: the first day, the third day, the seventh day, one month, three months, half a year or one year after operation.
21. Why and what are the contents of the review?
reexamination is for the long-term safety, effectiveness, stability and reliability of surgical treatment! Reexamination contents: 1) visual acuity; 2) Intraocular pressure; 3) Computer optometry; 4) Cornea (observation under slit lamp microscope).