Q: Should the prevention of myopia wait until children go to school?

Professor Yang Xiao, Refractive and low Vision Department, Sun Yat-sen Eye Center, Sun Yat-sen University: To delay the time of myopia cheapest eyeglasses online in teenagers, delay the speed of myopia deepening, and reduce the incidence of myopia, the "line of defense" should be moved to the preschool stage, and in the primary school stage, it should be "guard against death and fight for every corner." Middle school, especially junior high school, should play the role of "peer education", and set up the concept of "using spare time and reasonable eye protection with eye science" among students.

5~7 years old is the key period to develop good eye habits. In the early childhood and the lower grade stage of primary school, parents often pay attention to let children develop good learning habits. In fact, with the increase of reading and writing time, children at this age also need to pay attention to developing correct eye habits. Poor sitting posture and too long eye time at close range are all preconditions for myopia, and outdoor exercise for more than one hour a day can effectively prevent myopia.

Myopia develops the fastest before and after school age, so preschool children should minimize close reading and more outdoor activities.

Q: Does the OK mirror work? Can false myopia be corrected with OK mirror?

Yang Xiao: Orthokeratology, or OK lens for short, is a specially designed contact lens made of highly oxygen-permeable materials. The OK mirror is worn at night to ensure good daytime vision. After wearing, it can change the shape of the front surface of the cornea and reduce myopia and astigmatism.

Wearing orthokeratology mirrors is a kind of non-surgical treatment, is a reversible correction means, here reversible, means that after stopping wearing, the patient's vision will slowly return to the uncorrected before, so it is necessary to adhere to the correct wearing of the OK mirror to maintain normal vision as much as possible. Orthokeratology is suitable for adolescents and adults over the age of 8 years, and is suitable for patients with myopia below 500 degrees or patients with regular astigmatism below 150 degrees. Patients must go to the hospital to do the relevant examination, all indicators can be worn.

Studies have shown that the orthokeratology lens can control the deepening of myopia to a certain extent, and can slow the growth rate of the eye axis in patients with myopia, which is one of the effective means to control the development of myopia.

The orthokeratology lens is to contact the eyes, need to pay special attention to develop good hygiene habits. Each person's own conditions are not the same, the use of eye habits are not the same, the same wearing OK mirror, may not have the same effect.

If it is determined to be false myopia, it is not necessary to use the OK mirror, but to do a good job of myopia prevention and control, false myopia can be counted as a warning to a certain extent, once found, it should be done as soon as possible to prevent myopia measures, such as increasing outdoor activities during the day, paying attention to eye posture