The causes of myopia in children and adolescents are complex, which also means that the prevention and control of myopia requires the joint efforts of education authorities, schools, parents, children, and medical institutions to create a healthy eye environment.

"Schools should start by ensuring that students have at least one hour of outdoor activities a day, doing eye exercises twice a day, monitoring their eye behavior, wearing discountglasses correctly and providing proper meals." Central China Normal University first affiliated high school director Wang Yifang said.

"Teenagers themselves should also conduct self-management from five dimensions: eye distance, eye time, environmental light intensity, outdoor activity time, and eye Angle." Yang Zhikuan, professor of Aier School of Ophthalmology, Central South University, reminded that if the child has the phenomenon of "tilting the head and squinting" and "blurred vision", parents should not be taken lightly, and should go to a professional eye hospital for examination, and the doctor will give the child myopia prevention and control program.

In order to "protect" the bright eyes, Chinese scientific researchers have also joined the ranks of polishing the "soul window". For example, at the recently held "China International Ophthalmology and Vision Science Transformation and Innovation Forum", a vision science incubator was born, which encourages the industry to take out the "whimsy" of "protecting the eyes" to "incubate", in order to promote the transformation of ophthalmology research results to the clinic, and ultimately benefit the "small glasses" group.

"Only by working together to ensure that children have enough time outdoors during the day, maintain correct reading and writing posture, control the time they use electronic products, ensure adequate sleep and proper nutrition can we jointly protect their bright future." Yang Zhikuan said.

Visual fatigue is easily induced by large deviation of top focal degree

Top focal deviation, also known as the degree, is an important indicator to measure the quality of resin lenses. A nominal 575 degree myopia lens, after detection, the actual degree is 600 degrees, and its deviation is 2 times the national standard tolerance (plus or minus 12 degrees). In the test of other samples, it was found that there was a resin lens produced by a company, and its spherical lens top focal deviation was even more than 8 times the national standard tolerance, and was judged to be seriously unqualified products.

Inspectors said that the top focal deviation of large glasses, will lead to eye muscle tension, eye pain, cause visual fatigue. Long-term wear can also produce nausea and vomiting. It is especially harmful to the eyes of growing teenagers.