At present, primary and secondary schools have begun to have winter vacation, taking advantage of the convenience of the holiday, many parents began to take children to check their eyesight, the matching discount eyeglasses online, the treatment of the treatment; At the same time, the holiday home for a long time, but also to the peak of electronic products "fight" for children's vision. How to prevent myopia correctly in the end? What "pits" need to be avoided in the prevention and treatment of myopia? Are those popular "eye protection artifacts" useful in the end? The reporter visited a number of eye experts to bring answers to parents.

Children hardly use electronic products why also myopia?

Q: Children usually hardly use electronic products, why also myopia?

Professor Sha Xiangyin, Director of Ophthalmology, the Second Affiliated Hospital of Guangzhou Medical University: First of all, there are many reasons for myopia, including heredity, ethnicity, environment, diet and eye habits. So, it's not that if you don't look at electronic products, you won't be nearsighted.

For example, some parents are both highly myopic, even if the child does not look at electronic products, due to genetic factors, it will be more prone to myopia than other children. In addition, students now have more and more heavy homework burden, long-term eye learning, coupled with incorrect sitting posture, and even often lying down to read, will increase the burden on the eyes, resulting in the occurrence and aggravation of myopia. Some children are also picky eaters and lack of outdoor exercise, which is also a factor that can not be ignored.

Q: How old can a child do myopia surgery? Which is better, full femtosecond, half femtosecond or something?

Sha Xiangyin: Myopia surgery can be done only when you are over 18 years old. Because the premise of surgery is to require a stable degree of myopia, if the patient is young and the ocular axis is still growing, the myopia may continue to grow every year, in this case is not suitable for surgery.

Full femtosecond and half femtosecond are suitable for people with different degrees. Full femtoseconds are less invasive than half femtoseconds and have a lower incidence of postoperative complications. However, full femtoseconds have higher requirements for patients' eye conditions and myopia degrees, and some myopia patients with high degrees and insufficient cornea are not suitable for full femtoseconds, and are more suitable for half femtoseconds. But in general, full femtoseconds can be considered first if eye conditions permit, and if full femtoseconds are not suitable, then half femtoseconds can be considered.