What is myopia and medical optometry

Abstract: most myopia occurs in adolescents. The degree deepens year by year in the stage of development and growth, and does not develop or develops slowly after maturity. The degree of myopia rarely exceeds 6D, there is no degenerative change in the fundus, and the vision can be corrected with glasses, which is called simple myopia., Myopia refers to a refractive state in which the focus falls in front of the retina after the parallel light is bent through the refractive system of the eye without adjustment. Therefore, myopia can not see the distant target. If the target is gradually moved closer to the eye and the light emitted is scattered to a certain extent, the focus will move backward. When the target moves closer to a certain point in front of the eye. The closer this point is to the eye, the deeper the degree of myopia., Most of the causes of myopia are the long anterior and posterior axis of the eye (called axial myopia), followed by the strong refractive power of the eye (called refractive myopia). Myopia mostly occurs in adolescence, and genetic factors have a certain impact, but its occurrence and development are closely related to insufficient lighting, improper reading posture, long-distance work, etc. Most myopia occurs in adolescents, and the degree deepens year by year in the stage of development and growth, and does not develop or develops slowly after maturity. Its The degree of myopia rarely exceeds 6D, there is no degenerative change in the fundus, and the vision can be corrected with glasses, which is called simple myopia. Another kind of myopia occurs earlier (it can occur between the ages of 5 and 10), and the progress is very fast. It continues to develop after the age of 25. The degree of myopia can reach more than 15d, often accompanied by fundus changes, and the vision is not easy to correct, which is called degenerative myopia. In addition, it is customary to call myopia below 3D as mild myopia, those between 3 and 6D as moderate myopia, and those above 6D as high myopia. Medical optometry is equipped with a pair of accurate and comfortable refraction The premise of fitting healthy glasses is also the direct embodiment of glasses as an important content of optometry. Ordinary routine optometry refers to the optometry with glasses in general optical shops. Its purpose is only to let the ametropic see the object clearly. The operation methods and steps are relatively simple. Medical optometry must first have a high-precision and high-cost comprehensive optometer, and then have strict requirements for optometrists. They must be optometrists who are familiar with clinical ophthalmology and optometry. In terms of content, ordinary optometry only carries out 1 / 5 of medical optometry, and medical optometry only has 21 items of optometry medical records. Scientific optometry prescriptions are issued according to various situations, so as to achieve the purpose of clear, comfortable glasses and medical care., A large number of investigations, especially those who wear glasses for many years, show that those who wear frame glasses or contact lenses after medical optometry have a very low possibility of visual fatigue, the refractive state of myopia is more stable, and the development is slow or stopped., Developed countries have always regarded glasses matching as a strict medical behavior, requiring optometrists to have the learning background of optometry major in medical college. Professional Optometrists must issue detailed optometry prescriptions after medical optometry.,

myopia refers to a refractive state in which the focus falls in front of the retina after the parallel light passes through the refractive system of the eye without adjustment. Therefore, myopia can not see the distant target. If the target is gradually moved closer to the eye and the light emitted is scattered to a certain extent, the focus will move backward. When the target moves closer to a certain point in front of the eye. The closer this point is to the eye, the deeper the degree of myopia.

myopia mostly occurs because the anterior and posterior axis of the eye is too long (called axial myopia), followed by strong refractive power of the eye (called refractive myopia). Myopia mostly occurs in adolescence, and genetic factors have a certain influence, but its occurrence and development are closely related to insufficient lighting, improper reading posture, long-distance work, etc.

Most of

myopia occurs in adolescents, and the degree deepens year by year in the stage of development and growth. After maturity, it does not develop or develops slowly. The degree of myopia rarely exceeds 6D, there is no degenerative change in the fundus, and the vision can be corrected with glasses, which is called simple myopia. Another kind of myopia occurs earlier (between 5 and 10 years old) and progresses rapidly. It continues to develop after the age of 25. The degree of myopia can reach more than 15d, often accompanied by fundus changes, and vision is not easy to correct, which is called degenerative myopia. In addition, it is customary to call myopia below 3D as mild myopia, those from 3 to 6D as moderate myopia, and those above 6D as high myopia.

medical optometry is not only the premise of matching a pair of glasses with accurate refraction, comfort and health, but also the direct embodiment of matching glasses as an important content of optometry. Ordinary routine optometry refers to the optometry with glasses in general optical shops. Its purpose is only to let the ametropic see the object clearly. The operation methods and steps are relatively simple. Medical optometry must first have a high-precision and high-cost comprehensive optometer, and then have strict requirements for optometrists. They must be optometrists who are familiar with clinical ophthalmology and optometry. In terms of content, ordinary optometry only carries out 1 / 5 of medical optometry, and there are as many as 21 medical records of medical optometry only. Scientific optometry prescriptions are issued according to various situations, so as to achieve the purpose of clear, comfortable glasses and medical care. A large number of investigations by

and

, especially those who wear glasses for many years, show that those who wear frame glasses or contact lenses after medical optometry have a very low possibility of visual fatigue, the refractive state of myopia is more stable, and the development is slow or stopped.

and

developed countries have always regarded glasses matching as a strict medical behavior. Optometrists are required to have the learning background of optometry major in medical college. Professional Optometrists must issue detailed optometry prescriptions after medical optometry.