1. Can myopia be operated on? Myopia (including accompanying astigmatism and some farsightedness) can be operated on to achieve improved vision. Generally speaking, it can be considered in adulthood (18 years old), with relatively stable myopia and no contraindications after examination. However, it is important to understand that surgery is not a treatment for myopia, but a correction of vision. The myopic nature of the eye does not change after surgery, but the vision is improved, making life easier and vision clearer! 2.Who is suitable for myopia surgery and is there an age requirement? Indications: Patients who are unwilling or unable to wear glasses, patients who cannot tolerate contact lenses, patients with special occupational needs, patients who have no contraindications to surgery and meet the requirements for surgery can all be considered. The age of surgery is generally 18~55 years old, but for patients younger than 18 years old or older than 55 years old, it is not necessarily true, mainly because before the age of 18, the development of the eye has not yet stopped and the prescription is not yet stable, so it is not done, but for some patients such as severe refractive aberrations, certain diseases need, cannot be fitted with glasses but need to improve vision, although the age is not yet, after a comprehensive assessment can be considered (For example, for patients with hyperopic amblyopia, the age can be relaxed because the treatment should be early and cannot be delayed). For patients over 55 years old, cataracts may appear and lead to vision loss, and cataract surgery is needed to solve the problem. 3.What are the methods of myopia surgery and how to choose? At present, there are many surgical methods and types, and most patients can find the most suitable method, mainly: Excimer laser surgery: it can be divided into LASIK, LASEK, femtosecond laser, etc. Generally, for myopia below 500 degrees, LASEK is the best choice (except for patients with scars), and LASIK is better for 600 to 1200 degrees (scar patients are generally not affected). ), but require normal corneal thickness, if the cornea is thin, or have corneal abnormalities, can choose crystal surgery. Crystal surgery: Patients with 1200~2000 degrees, or patients with thin corneas who wish to obtain the ideal result although the degree is not high, can choose crystal surgery for the best result. There are two types of crystals, anterior chamber and posterior chamber, and currently the posterior chamber is safer and more effective. 5.What advantages does refractive lens surgery have that excimer laser surgery does not have? Who is it suitable for? Compared to excimer laser surgery it mainly has the following advantages: (1) The correction range is much higher than excimer laser surgery, generally laser has the best effect for myopia below 800 degrees; for myopia below 1200 degrees, if the corneal thickness is normal, it can be considered, but with the increase of degree, there will be a certain degree of regression; above 1200 degrees, not only the effect is not ideal, but also the risk increases. In contrast, crystal surgery can be done around 2000 degrees, regardless of the degree, it is very stable and will not regress. (2) Laser surgery requires cutting off part of the cornea, so after the surgery, the cornea will become thinner, and once the tissue is cut off, it cannot be returned. Once the tissue is cut off, it will not be able to return. If you have myopia again, whether you can do it a second time depends on the remaining corneal thickness. If necessary, the crystal can be removed and restored to its original state, and other surgeries can be considered, which means it is a reversible surgery. (3) After laser surgery, some parameters of the eye change. When cataract surgery is needed in the elderly, it is necessary to tell the doctor that laser surgery has been done before (it is better to provide pre-operative data), and it is necessary to consider the deviation and make adjustments when calculating the IOL prescription, otherwise errors may occur. The parameters of the eye remain unchanged in their original state after the IOL surgery, so that future cataract surgery is not affected and there is no error. (4) The recovery from crystal surgery is fast, and you can see normally the next day, and the postoperative medication time is short, usually 2~3 weeks, which is more convenient. (5) The post-operative vision of crystal surgery patients is greatly improved, that is to say, the vision of most patients after laser surgery is generally just about the same as wearing glasses before surgery, but the vision of the vast majority of patients after crystal surgery is better than that of wearing glasses before surgery, and some of the improvement is quite large, and for highly myopic eyes, the visual quality is better. 6.Since crystal surgery is so good, why don’t we let everyone have crystal surgery? A: First of all, the cost of crystal surgery is relatively high, about twice as much as laser surgery. Specifically for each myopic patient, a comprehensive assessment of surgical results, safety and economy is needed to decide which is the best way, not the more expensive the better! 7.If I want to have myopia surgery, what kind of examination and preparation do I need to do? A: First, if you are wearing contact lenses, you need to stop wearing them for 1 week (soft) to 3 weeks (hard), then go to the hospital for a thorough examination (Monday to Friday, usually takes 1 to 2 hours, no examination on weekends), determine if you can have surgery, communicate with your doctor and determine the type and mode of surgery. Laser surgery is usually then available to make an appointment for surgery (routinely Tuesday and Thursday), receive pre-op medication and instructions, and wait for surgery. In the case of crystal surgery, pre-operative iris laser perforation is also required, which requires an appointment (usually Wednesday afternoon). After completing the perforation and having the doctor confirm it, it takes 1 week (for regular degrees) to 3 weeks (for special degrees) to book the crystal, dispense pre-operative medication, and make an appointment for surgery.