Patients with high myopia have a degree of almost more than 600, and their retinas begin to be damaged. They must wear thick lenses to see clearly. There are many types of myopia. Some are caused by excessive exposure to electronic products, some are developmental gene mutations, and the most obvious is genetic. The degree of myopia caused by genetics will be higher, and most patients have to wear glasses since childhood. Hereditary myopia has a family history. Symptoms and signs When the eyeball is in a static state of accommodation, equal light rays coming from 5 meters away will focus exactly on the retina after refraction by the eye, forming a clear image. An eye with this refractive state is called an emmetropia. The focus falls in front of the retina and cannot accurately form a clear image on the retina, which is called axial myopia. However, it is highly adaptable to scattered light from nearby targets, and clear vision can be achieved as long as the target moves to a certain distance in front of the eyes. Therefore, myopia can see close objects clearly but far objects are blurred, which can be corrected by concave spherical lenses. 1. Distant vision decreased, near vision normal; 2. Visual fatigue; 3. Exotropia or co-rotational exotropia may occur, and the strabismic eye is usually the one with the higher degree of myopia; 4. People with high myopia often experience vitreous liquefaction and turbidity, complicated by cataracts, and feel that black shadows are floating in front of their eyes or vision is reduced; 5. For low and moderate myopia, the fundus is generally unchanged or has a leopard-like fundus, solitary macules for myopia, and annular choroidal atrophy around the temporal or peripheral optic disc for high myopia, macular degeneration, hemorrhage, Fuchs spots, posterior scleral staphyloma, and retinal holes and retinal detachment are prone to occur; There are four chances of high myopia being passed down to the next generation: 1. If both husband and wife are highly myopic, the incidence rate of their children is usually above 98%; 2. If one parent is highly myopic and the other is normal, 10%-15% of their children will develop the disease; 3. If one parent is highly myopic and the other is a myopia gene carrier, the incidence of high myopia in their children is about 50%; 4. If both parents are myopia gene carriers but have normal vision, the incidence of high myopia in their children is 25%; Is there any particularly good treatment for high myopia? In addition to developing good eye hygiene habits and strictly controlling the time. The best way to control high myopia is to use hard corneal contact lenses, referred to as RGP. This type of lens can have a certain myopia control effect on the rapid development of high myopia. For some children who are currently suffering from mild myopia, they can consider using the Mondavid orthokeratology lens to control the treatment. |
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