Abstract: general simple myopia will not develop until the age of 20, but a few myopia will continue to develop, especially in adults, myopia will continue to aggravate, the ocular axis will continue to prolong, and the diopter will increase year by year, even more than 20.00d., I. simple myopia. Simple myopia usually occurs in school age. The degree of myopia is below 600 degrees. There is generally no obvious change in the fundus of the eye. The vision can be corrected to normal with appropriate lenses, Usually after the body matures Myopia with stable degree (after the age of 20). Simple myopia is mainly seen in adolescents and children. Its basic characteristics are as follows: 1. It occurs and develops during the growth and development of adolescents; 2. It deepens slowly and remains stable until adulthood. Unless special effective corrective treatment measures are taken, the whole process is irreversible; 3. Low far vision , near vision and other visual functions are normal;, 4. Low and normal far vision can be corrected ideally;, 5. Myopic refraction is mostly low or moderate;, 6. Pathological myopia usually does not develop.,
1. Simple myopia
simple myopia usually occurs in school age. The degree of myopia is below 600 degrees. There is generally no obvious change in the fundus of the eye. The vision can be corrected to normal with appropriate lenses, Generally, myopia tends to be stable after the body matures (after the age of 20). Simple myopia is mainly seen in adolescents and children. The basic characteristics are:
1. It occurs and develops during the growth and development of adolescents;
2. Progressive and slow deepening, and basically static and stable in adulthood. Unless particularly effective corrective treatment measures are taken, the whole process is irreversible;
3. Low far vision, normal near vision and other visual functions;
4. Low normal far vision can be corrected ideally;
5. Myopic refraction is mostly low or moderate;
6. Pathological myopia usually does not develop.
II. Progressive myopia
generally simple myopia will not develop until the age of 20, but a few myopia will continue to develop, especially in adulthood, myopia will continue to worsen, the ocular axis will continue to prolong, and the diopter will increase year by year, even more than 20.00d. This kind of myopia is called progressive myopia, malignant myopia and metamorphic myopia.
progressive myopia goes beyond the scope of ametropia to a certain extent, and will eventually lead to a series of pathological changes of the whole eyeball. Such as early degenerative changes, decreased vision, mild degenerative changes of vitreous, etc.