Laser surgery can only be done if there is a degree of myopia or less

As an adult, you may opt for myopia laser surgery if you meet the following criteria:

Six adaptation conditions.

Only patients who have the following conditions are candidates for LASIK surgery**

1.Age 18 years old or above;

2.In the past two years, the diopter has been stable, and its development rate is not more than 50 degrees per year;

3.There are no contraindications to LASIK surgery (such as glaucoma, iritis, fundus hemorrhage, omentum detachment, etc.) in eye examination

4.No systemic diseases such as diabetes, immunity, collagen, etc.; Non-scarring constitution;

5.The diopters are in the following range: myopia 100 3000 degrees; Hyperopia above 800 degrees; Astigmatism below 600 degrees;

6.The corneal thickness is greater than 450um.

Seven major contraindications The contraindications mainly refer to active inflammatory lesions in ocular patients, including conjunctivitis, keratitis and chronic dacryocystitis.

1.Severe corneal dystrophy, corneal degenerative diseases;

2.Patients with fundus lesions such as retinal detachment;

3.Patients with dry eye syndrome, keratoconus, glaucoma, diabetes, collagen diseases;

4.scarring constitution;

5.pregnant women and drivers driving at night;

6.Patients with severe amblyopia who wear glasses to correct extremely poor vision;

7.Those who have extremely high requirements for vision and have great concerns about surgery; Among them, patients with eye inflammation can still be operated after anti-inflammatory**.

1. It depends on the thickness of your cornea.

2. It is necessary to divide LASEK and LASIK into two types of surgery.

In the case of EK, the corneal epithelium is 60 microns, and the laser radius is used, which consumes 14 microns per 100 degrees. If there is 1000 degrees of myopia, a total of 140 + 60 = 200 microns will be consumed. As the corneal epithelium rejoins, the 60 microns that have been shaved off will re-form, and the final cut depth is also 140 microns.

In the case of LASIK, the thickness of the corneal flap is not counted (because the corneal flap does not really heal and does not play a role in resisting intraocular pressure, and cannot prevent keratoconus), and the thickness of the corneal flap varies from 90 to 160 microns depending on the operation, so it is assumed that the depth after 1000 degrees of cutting is 160 + 140 = 300 microns.

The corneal thickness of a normal person is between 500 and 600um. The higher the power, the greater the depth of the cut and the greater the danger. The total effective thickness of 410 microns is a lower limit, beyond which it may lead to the formation of keratoconus. Measure it according to your own situation.

The LASIK procedure focuses on the corneal stromal layer, which has the advantage of being able to see clearly immediately after the surgery. However, the disadvantage is that the depth of the operation is large, the remaining effective thickness of the cornea is small, and the wound cannot really heal. In the case of Lasek subepithelial surgery, it takes a certain amount of time for the corneal epithelium to heal and a period of time to recover after the surgery.

However, it is smaller than IK and has a larger effective corneal thickness.

Hello, the conditions for excimer laser surgery: at least 18 years old, myopia 100 1400 degrees, astigmatism within 600, hyperopia within 600, the change in the degree in the past two years does not exceed 50 degrees, and the myopia patients who are suitable for all eye conditions after preoperative examination can consider the surgery.

I think you should have me, I just had surgery the other day. In fact, the higher the degree of this surgery, the worse it is done, and the lower it is, the better it is. It also has to do with the thickness of your cornea, and the thicker it is, the better the effect.

I also felt very good after doing it at 800 degrees, and the doctor said it was a success. A lot of more than 200 degrees to do, that's better.

The surgical requirements for myopia surgery are:

1. Must be over 18 years old.

Myopia under the age of 18 is still in the stage of vision development. Myopia can be treated with medication**. It is generally recommended to take two packs of Joy Vision Nutrients a day, and insist on taking it for a period of time, the degree of myopia will be reduced, the vision will be improved, and there is no need for adult surgery.

2. The degree of myopia is between 100-1500 degrees, the degree of astigmatism is within 400 degrees, and the vision is stable for more than two years.

3. There are no other ophthalmic diseases, which do not affect the postoperative recovery.

4. The thickness of the cornea is thick enough.

After preoperative examination, only those who meet the requirements of surgery can be operated.

We should say that if the thickness of the patient's footsteps is normal, it is generally about 1,000 degrees, and myopia can be corrected by laser surgery. But if it exceeds 1,000 degrees, a new surgical correction method may now be required. In general, with this new surgical correction method, it can be corrected even at about 2,000 degrees.

First of all, let's talk about laser myopia eye surgery. Because he wants to change the curvature of the cornea by cutting the corneal tissue, so as to correct myopia, we know that he can't grind his foot very thin in the whole eyeball. In this way, the eyeball cannot withstand a certain amount of pressure, and it is also easy to cause some complications such as keratoconus.

Therefore, we require a corneal thickness of at least 460 microns to perform laser surgery. And if it is more than 1,000 degrees, we do not perform this laser surgery. But we just talked about a new surgical method called phakic intraocular lens implantation, which is simply referred to as ICR surgery.

It is made by making a special intraocular lens for you to put in your eye, which is equivalent to putting glasses in your eye. If it is corneal refractive surgery, it is not suitable for more than 1500 degrees. The optimal range of corneal refractive surgery is 800-1500 degrees, and it is recommended that the thickness of the cornea should not be less than 400 microns after corneal cutting; If the cornea is too thin and the power is too high, ICL surgery may be an option**; If ICL surgery is not suitable, lens removal and intraocular lens implantation can be done, and myopia above 3000 degrees can be improved to a certain extent, and even the purpose of lens removal can be achieved.

If the patient's myopia is greater than 1000 degrees, for example, 1500 degrees, it may not be suitable for ReLEx surgery.

Because the ReLEx surgery is to form a lens in the cornea, and if this lens is taken out again, our cornea will become thinner, and this thinning has a certain safety range, and we cannot thin it infinitely. Just like the tires of a car or a balloon in us, if it is obviously thinner in one place, the place will bulge outward and bubble, so any of our ophthalmologists will make a safety assessment of the patient's eyes when doing surgery, that is, whether the patient's eyes are still safe after the operation, we will consider all his indicators, such as the shape of the cornea, the thickness of the cornea, and how much corneal thickness can he leave after the femtosecond laser. This must be within the security limits set by the state.

In general, myopia surgery is not recommended if myopia exceeds 1500 degrees.

**Surgeries for myopia include: excimer laser keratomectomy, excimer laser corneal in-situ in-situ incision, excimer laser sub-epithelial flap keratomileusis, and intraocular lens implantation, which is suitable for myopic patients with a refractive power of less than 1500 degrees and a relatively stable power within two years.

In addition, surgical myopia requires the thickness of the cornea and the density of corneal endothelial cells. Surgery cannot be used to correct the refraction when the corneal thickness is less than 450 m and the density of corneal endothelial cells is less than or more than 2899 410 mm². Patients with eye diseases and other underlying systemic diseases should not be surgically treated**.

It is recommended that myopia patients improve their eye examination and choose the appropriate way before undergoing the first procedure.

If the myopia is above 1000 degrees, surgery cannot be done. Due to high myopia, the cornea may be cut too much during surgery, which can induce secondary keratoconus, which may also increase the onset of intraocular inflammation or infection. Therefore, before this surgery, it is also necessary to have a corneal thickness test and a corneal topography examination, and it is also necessary to know the power of vision before choosing the right surgical method for you.

If you choose laser correction surgery, it is best to have a myopia degree of 200 to 1300. If the myopia of men is below 200 degrees, it is generally not recommended to undergo myopia eye surgery, and the vision can be improved by adjusting lifestyle habits. Myopia surgery is also not recommended if the male has myopia above 1200 degrees, or if it is accompanied by astigmatism symptoms above 600 degrees.

Before myopia eye surgery, men need to go to the hospital to have their vision checked and pay attention to eye hygiene three weeks before surgery. After surgery, men should develop good eye habits, avoid eye water for one month after surgery, and secondly, go to the hospital regularly for reexamination. In general, laser surgery for myopia is suitable for high myopia with a degree below 1000 degrees, if the power of the myopic eye is too high, the more corneal thickness will be cut by the laser, which is unsafe.

Laser surgery requires not only the patient's visual acuity, but also the fundus and whether there are other complications, etc., which requires a comprehensive examination to be comprehensively evaluated. There are also certain risks associated with myopia eye surgery, so be sure to choose a regular hospital.

If the myopia of the eye is above 100 degrees, laser surgery can be performed, but the myopia degree should not exceed 1200 degrees. Laser surgery can effectively improve the refraction of the eye and make the eye see more clearly, so be sure to consult a doctor before the surgery and make the corresponding preparations, and the surgery can only be performed if the conditions are met**. [Myopia surgery**Click to consult].

Usually the range of eye laser surgery is 100 to 1200 degrees, and in the case of myopia astigmatism, it cannot exceed 600 degrees. For example, if the myopia exceeds 900 degrees, it may regress to 100 200 degrees after surgery, and the risk of surgery will increase accordingly.

Laser myopia is a commonly used method at present, which is not only safe, but also recovers relatively quickly, and can restore vision to an ideal state. However, it should be noted that in the case of severe myopia, it is necessary to choose surgery carefully**, because the cornea may be damaged during the operation, and it will be difficult to recover later.

If you have an idea of understanding this aspect, you can pay attention to Shenzhen Aier Eye Hospital. Aier Eye Hospital Group has more than 9,000 professional ophthalmologists and optometrists (including overseas), with an annual outpatient volume of more than 10 million and more than 1 million surgeries in Chinese mainland, and a medical service network covering nearly 3 billion people around the world. The expert group has established technical training centers with Nideck in Japan, Zeiss in Germany, Bausch & Lomb in the United States, Nuctech in the United States, and Intralase in the United States, which is the training instructor for many surgeons in China.

1. Lifelong data management, remote review of more than 700 professional ophthalmology hospitals around the world. 2. Postoperative re-examination and regular return visits. 3. All-round tracking and guarantee services.

4. All ophthalmologists provide family eye health examinations. <>

Myopia Correction Recommendations:

1. Pay attention to the time you spend with your eyes.

Children's eye development is not perfect, the ability to work is low, every time you read or write for an hour, you should let the child go to outdoor activities, do games, look into the distance, or observe the flowers and trees, so that the tense eye muscles are relaxed, eliminate fatigue. In addition, it is necessary to make the child's life regular, have enough sleep, and let the eyes get enough rest.

2. Pay attention to the light of your eyes.

Do not allow your child to read or write in dark light or sunlight. If a 25-watt light bulb is used indoors at night, the distance between the book and the bulb should be within 1 meter. If you use a 60-watt bulb on a stool, the distance between the book and the bulb should be 1 2 meters.

Cloudy days, dusk, weak light in the moonlight, and strong light in the sun are not suitable for reading and writing. When watching TV, it is necessary to maintain a suitable distance, which should generally be 5 7 times the diagonal length of the phosphor screen. The time to watch TV should not exceed 2 hours at a time.

3. Pay attention to eye exercise.

Physical exercise can enhance blood circulation and metabolism, supply more nutrients to the eyes, and enhance the resistance of the eyes, which is an indirect exercise for the eyes. The direct exercise is eye exercises, which is based on the massage, massage, acupuncture and acupuncture acupuncture points of Chinese medicine, combined with jujube Kuanhui medical sports, which is a scientific method to protect eyesight. Parents should learn the basic knowledge of eye exercises, give specific guidance and often urge their children to do eye exercises, and persevere.

4. Pay attention to eye nutrition.

In order to protect children's eyes, children can eat more carrots, animal liver, lean meat, to supplement vitamin A, or regularly supplement the comprehensive nutrition of the eyes with Leyan vision nutrients, and at the same time, it is also necessary to appropriately consume millet, tofu, animal liver and other supplements of vitamin B2, so as to avoid night blindness, corneal malacia, red eyes, dry itching and other symptoms. Eating too much sugar will harm your child's eyesight, so your child's sugar intake should be controlled.

5. Pay attention to regular inspections.

Regular check-ups are due to the fact that children's eye structure, binocular visual function, and intelligence are still in the process of continuous development after birth, and the content of the examination is different at different ages. The usual age of ophthalmologic examination is generally 2-7 days after birth, 42 days after birth, 3 months, 6 months, and 1 year of age, and then once a year. In this way, the problem can be detected early and corrected early, instead of waiting until the vision has deteriorated and there is a vision problem before going for a check-up.