Many people think that after getting glasses for myopia, everything will be fine. When you find that your child can’t see the blackboard again next year, you’ll be in a hurry to change your glasses. In fact, wearing frame glasses to see clearly does not mean that myopia is “cured”. Generally speaking, children grow 50 degrees – 75 degrees in a year or two, adults grow 50 degrees – 75 degrees in two or three years belong to the normal category, and the cause of myopia degree deepening usually have two kinds of reasons. Pathological myopia is a pathology that occurs within the eye and is hereditary, and is characterized by a continuous and rapid increase in myopia. If myopia increases by more than 100 degrees or even 200 degrees in a year, or accumulates to 600 degrees, and the eye axis gradually grows, it is likely to be pathological myopia. For the treatment of pathological myopia, posterior scleral reinforcement is currently used. One type of myopia can be aggravated by incorrect eye hygiene and habits, such as too bright or too dark lighting, too much time spent on the eyes, and untreated eye diseases such as impingement, ptosis, and keratitis. This cause is more common. In addition to this, there are some claims in the medical community that myopia is related to a lack of trace elements such as calcium and chromium, or excessive carbohydrate intake at a young age, but these have not been conclusively verified. The human eye does not develop until the age of about 20, and the eyes of adolescents are in a growth phase, so they have a high chance of developing myopia or myopia deepening. Relatively speaking, the vision condition of adults should be more stable, but watching the computer, reading for too long, long-term eye fatigue, making adults now myopia deepening situation is also very common. Once you find that your existing glasses can’t meet your vision requirements, you should go to a regular hospital eye exam, correct your myopia, replace your glasses with the right ones, and review them regularly to avoid a long-term “starvation” of your eyes, excessive curvature of the cornea and lens surface, and increased myopia. Many children and teenagers are pseudomyopia and their vision can fluctuate greatly within a short period of time. Experts recommend that adolescents under the age of 18 should have a half-yearly or annual optometry, and use dilated pupils to relax the eye muscles and eliminate the inaccuracy of optometry caused by pseudomyopia. Adults need a detailed fundus examination to rule out fundus diseases, crystal deformities, etc. if it is their first prescription. Don’t use your eyes for a long time at one time In terms of how to use your eyes properly, some people have proposed the concept of “saving your eyes”, comparing your eyesight to the battery of a flashlight, which has a long life span when used for a short period of time; when used for a long period of time, it will be rapidly depleted due to acute consumption, so you should give your eyes a reasonable amount of time to rest. Don’t look at near things for more than 6 hours a day; try to read by listening instead of looking; desk is best placed in front of a window without objects to block; desk lamp if incandescent, preferably 25 watts – 40 watts, light should not be directly on the eyes; operate the computer to maintain a certain distance; do more outdoor sports, reduce the game console, TV, computer and other “myopic environment “.