Abstract: myopia is caused by long anterior posterior diameter of eyeball, too convex cornea and inaccurate convergence of external light in the fundus. Laser surgery for myopia is to use the laser beam to change the curvature of the anterior surface of the cornea to correct ocular ametropia.
in recent years, news about myopia surgery has emerged one after another. Many people choose to have surgery in order to take off their glasses, because it only takes more than ten minutes to help myopic people have bright eyes again. Can myopia be cured? Authoritative ophthalmologist, please clarify the common questions about myopia surgery.
myopia is a common eye disease, which has a great impact on vision. According to the survey of the Ministry of education and the former Ministry of health, the myopia rate of primary school students in China exceeds 25%, nearly 70% of junior middle school students and 85% of senior high school students. The myopia rate increases at a rate of 8% every year, ranking first in the world.
now, The most common method to treat myopia is excimer laser correction surgery (hereinafter referred to as “laser surgery”), but many people know little about this surgery, and there are some misunderstandings.
Myopia is caused by long anterior posterior diameter of the eyeball, too convex cornea and inaccurate convergence of external light in the fundus. Laser surgery for myopia is to use the laser beam to change the curvature of the anterior surface of the cornea to correct ocular ametropia. Generally speaking, it is to “grind” a pair of appropriate glasses on the cornea, so that the external light can accurately converge and image in the fundus, so as to achieve the purpose of correcting myopia.
have four conditions for laser surgery. Not all people with myopia are suitable for excimer laser correction, which mainly depends on the state of the eyes. Generally speaking, four conditions can be met: 1 At least 18 years old; 2. The degree has been stable in the past two years; 3. Stable refraction for two years, good corrected vision and no other eye diseases; 4. There is no operation contraindication after examination.
some people think that myopia surgery is effective only for people with high degree of myopia. In fact, myopia, high myopia, hyperopia and astigmatism can be operated on. As long as the vision is not too poor, most myopia patients can get satisfactory results through laser surgery.
7 questions about myopia surgery
1 How many ways does myopia operation have at present?
at present, there are mainly two kinds of myopia treatment surgery: one is excimer laser surgery; The other is posterior chamber refractive intraocular lens implantation, which is often called refractive lens surgery. Refractive crystal surgery is called “addition surgery” in the industry, and excimer laser surgery is called “subtraction surgery”.
refractive lens surgery refers to the operation of adding intraocular lens into the eye and placing the lens in the safe area in front of the lens of the human eye, so as to achieve the effect of correcting visual acuity. Excimer laser is to correct myopia by cutting the corneal stroma under the corneal flap to reduce the corneal curvature of the pupil. This is also the most commonly used method at present.
2. How high is the success rate of myopia surgery? The success of
myopia surgery depends not only on the recovery of visual acuity, but also on the visual quality, including whether the distance and daytime vision are comfortable, whether the eyes are balanced, and how the three-dimensional feeling is. Now myopia surgery can do personalized cutting according to the specific situation of the patient’s eyes. Therefore, the total satisfaction has reached 97% ~ 98%.
3. What are the reasons that affect the success of surgery?
serious complications affecting vision can be avoided by strictly screening patients who meet the operation conditions, selecting appropriate operation scheme, paying attention to intraoperative operation norms and postoperative nursing, and the cooperation of patients. Therefore, it is recommended to go to a regular professional eye hospital for surgery to ensure the safety of the operation.
4. Will there be complications after surgery? The complications of
mainly include the following three situations: inflammation after operation, haze after operation and keratoconus after operation, which account for only a small part at present. However, these conditions are not caused by the operation itself, but related to the doctors and equipment performing the operation. Therefore, it is very important to choose myopia surgery, an experienced doctor and an authoritative hospital.
5. What should we pay attention to before operation? Before the operation of
, we must prepare according to the requirements of the doctor, keep the eyes in the best state, don’t stay up late and relax, stop wearing contact lenses two weeks in advance, and require antibiotic eye drops three days before the operation.
normal conjunctival sac also has many bacteria and other microorganisms. Preoperative medication can greatly reduce the chance of infection. Some patients come to have surgery. We can only ask him to order antibiotic eye drops many times a day, but we don’t advocate this.
6. What should you pay attention to after operation?
are not all right after the operation. Specifically, the following things need to be done well:
eye protection: the first week after the operation is a critical period to avoid rubbing eyes and water in the eyes. It is best to dry clean your hair in a barber shop within a week.
point medicine: point medicine according to the doctor’s requirements. Improper postoperative medication will also affect the operation effect.
reexamination: make sure to follow the doctor’s advice, especially regularly reexamine the intraocular pressure to avoid the occurrence of hormonal glaucoma.
for eyes: wound healing needs a process, and there will be a recovery period after operation, so you should pay attention to rest within a week. It is best to avoid long-term and high-intensity eye use within a month.
driving: try to reduce driving at night within a month, and pay attention to driving during the day.
exercise: within one week after operation, avoid sweat flowing into your eyes during vigorous activities. Avoid sports that may cause impact on the head and eyes, especially for patients with high myopia. Due to their poor fundus state, they should pay more attention to protection. Swimming is prohibited within 40 days after operation.
make-up: it is best not to make-up within three days after operation to avoid touching the eyes. It is best not to draw eyeliner and apply mascara in two weeks.
7. After operation, you need to face the computer for a long time,