When the 2010 World Cup is in full swing, does it also tug at your heartstrings of sports? Go outside, put on sportswear, run to the field, to a realistic version of the “World Cup” it. However, less than 10 minutes, sweat has already made your “glasses” is not in place to help your eyes faithfully, your enthusiasm for sports suddenly fell, so do not let people chagrin. So, I can’t help but wonder if there is a way for you to take off your glasses, but also see very clearly? In fact, this is not a luxury, excimer laser keratomileusis can help you solve all your problems. Confusion 1: Excimer laser surgery for myopia is safe? Answer: There is no doubt about the safety of excimer laser surgery. It is currently the safest form of keratomileusis. Excimer laser keratomileusis is not a new procedure. Excimer laser keratomileusis (PRK) has been performed overseas since the 1980s. In the 1990s, excimer laser in situ keratomileusis (LASIK) was also introduced and has dominated the market ever since, precisely because of its high safety profile. Professionally, safety is described by the safety index, which is the ratio of postoperative corrected visual acuity to preoperative best corrected visual acuity. For example, if the preoperative best corrected visual acuity is 1.0 and the postoperative corrected visual acuity is 1.2, then the safety index is 1.2. Statistics show that the safety index of excimer laser surgery for myopia can usually be 1.0 or higher. Therefore, it is safe. Confusion 2: Is excimer laser surgery effective in treating myopia? Will it rebound? Answer: This is one of the most common questions that patients ask and are most concerned about. In professional terms, effectiveness is described by the effectiveness index, which is the ratio of postoperative naked eye vision to preoperative best corrected vision. For example, if the preoperative best corrected visual acuity is 1.0 and the postoperative naked eye visual acuity is 1.0, then the effectiveness index is 1.0. Statistics show that the effectiveness index of excimer laser surgery for myopia can usually reach 0.95 or higher. This means that more than 95 percent of patients will achieve their preoperative vision expectations. So, does the vision stay at that level? Usually, as long as you follow the physician’s medical advice, try to reduce the use of eyes at close range for 1 month after surgery, such as not playing games on the computer or staying up late, and review regularly, usually patients will not experience regression of refractive error. Even if there are a few patients who have a small regression (50 degrees), they are mostly patients with high myopia of 800 degrees or more, and generally do not keep regressing. Confusion 3: How long can I use my eyes normally after laser surgery? Answer: Generally speaking, you can use your eyes normally one month after surgery. Many patients have concerns that they need to rest for a long time after surgery because they have been engaged in computer operation. In fact, there is no need to worry about this at all. After surgery, you just need to follow the doctor’s prescription to order eye drops and regular review, and reduce the use of eyes at close range, it is not impossible to use your eyes. In fact, we have worked with many patients who are accountants and lawyers, and their eye use is very demanding and they have very little rest time. However, none of them showed significant regression after surgery. Confusion 4: Which patients are not suitable for laser surgery? Answer: Patients younger than 18 years old and older than 50 years old; those with myopia over 1500 degrees and astigmatism over 400 degrees; those with corrected visual acuity below 0.8; those with unstable refractive error, increasing at a rate of 50 degrees per year; those with previous eye diseases, such as glaucoma, iritis, retinal detachment, cataract; those with a history of eye surgery, such as cataract, glaucoma and retinal detachment; those with systemic diseases, such as diabetes, hyperthyroidism, lupus erythematosus, etc.; people with mental illnesses, such as anxiety and depression; and people with too high expectations for surgery. Confusion 5: What is the most suitable surgical procedure? Answer: Due to the advancement of technology, there are more and more surgical procedures, making it impossible for people to choose. In fact, the choice of the procedure depends on the individual. If your cornea is very thin and your myopia is very deep, you may choose to have a surface cutting procedure such as LASEK or EPI-LASIK. However, this procedure has significant post-operative pain and requires 4 months of post-operative medication. If this is not acceptable to you, you can also choose to have a cornea-saving model of LASIK surgery. If you are going to join the army or military school, or take a medical exam for civil service, and you are pressed for time, you must choose to have LASIK surgery, which has a quick recovery and no pain. If you have to drive or work night shift in the future, you have to choose to do aspheric cutting, it can reduce the night vision impairment. If you have a lot of irregular astigmatism and high aberration before surgery, then you have to do individualized cutting with higher order aberration guidance. Confusion 6: What do I need to pay attention to after laser surgery? Answer: You need to wrap your eyes with eye shields for 1 day after surgery, do not rub your eyes to prevent the corneal flap from shifting or falling off; you must come to the hospital for examination on the 1st day after surgery; you should not enter the eyes with shampoo water for 1 week; you should avoid strenuous sports, especially ball games and swimming, for 1 month after surgery; you should order eye drops strictly according to the doctor’s prescription after surgery; you should come for review 1 day, 10 days, 1 month, 3 months, 6 months and 1 year after surgery. Confusion 7: What are the complications after laser surgery? Answer: This is a problem that many patients worry about. Patients often ask if cataracts and glaucoma will occur after laser surgery. Actually, this will not happen. In the past, due to the hormonal eye drops, a few patients would develop hormonal high eye pressure. But nowadays, hormonal eye drops such as Lutasol have very few side effects on raising IOP, so such complications are very rare. Of course, it is not true that any complications do not occur. The most common one is short-term postoperative dry eye. Some patients will experience dry eyes and fatigue after looking at the computer for a long time. These symptoms will improve with the use of artificial tears and will gradually disappear after 1 month.