Many myopic people will ask about the glasses do not come often, the difference between reading glasses and myopic glasses and so on.
Glasses
Euvisual acuity
1. What is true myopia and what is false myopia? The most prominent subjective symptom of true nearsightedness is a reduction in distant vision, where distant objects are not clearly seen and near objects are OK. The so-called false myopia is a clinical phenomenon of increased regulatory tension, which may be true metropia, mild myopia or mild farsightedness, manifested as reduced vision when looking at distant objects due to tension in regulation, which requires a astigmatic pupil test.
2. Why is the child's degree increasing every year? How often do you change a pair of glasses? Strictly speaking, children and adolescents are in the growth and development stage, due to environmental and genetic factors, the refractive status of the eye is also constantly changing. If preschoolers have vision loss, strabismus, and phoria, they need to re-optometry every six months under normal circumstances, and re-optometry after 3 months in special cases. After school, students have to have an annual vision examination, once the eyesight is found to be declining, the need for timely optometry. The development of myopia is caused by many reasons, such as nervous study, too much close eye use, genetic factors, etc. Students' eyesight should be checked regularly every year, and new glasses should be replaced in time if changes are found.
3. Is the glasses good to wear often, or wear when not in use? There are quite a number of people with glasses in the box, in class or far-sighted from the box to wear, this is not right. If it is low degree myopia, it is ok to wear it when it is not used, and if it is medium and high myopia, it is best to wear it often. In addition, if it is a hyperscope, it is not low, moderate or high to wear often, which can alleviate the symptoms of adjustment. From getting up in the morning to sleeping at night, people have to use their eyes to see things at every moment, and wearing when not wearing will cause great burden to the adjustment of the eyes. Myopia glasses and flower glasses are not the same, flower glasses are worn when not used. Myopic glasses and astigmatism glasses need to be worn often.
4. Is the optometry with contact lenses the same as with frame glasses? The method of optometry is the same, but there are some differences in the degree of optometry. Nearsighted contact lenses are shallower than framed glasses, and far-sighted glasses are the opposite. Contact lenses are darker than framed glasses.
5. How often do people with presbyopia need to change their glasses? When people reach middle age, because the adjustment of the eye lens is gradually weakened, they must use flower glasses to improve near vision in order to see books and newspapers clearly. In the past, because of the limitations of the elderly, with a pair of reading glasses worn for many years, lenses appear wear vision is unclear and continue to wear, eye light changes are not re-corrected. Nowadays, the living conditions are constantly improving, and the eye care of the elderly is very important. Under normal circumstances, the glasses need to be replaced every 1-1.5 years, but there are elderly people, due to the adjustment of the eye is relatively fast or there are elderly eye diseases and other factors, should be replaced at any time according to needs.