The quoted explanation of astigmatism is: 1. A visual defect. Astigmatism people can't see clearly because of the irregular curvature of the cornea or lens surface, which makes the image entering the eyeball scattered into many parts. Glasses made of special lenses can correct astigmatism. The phonetic notation is: ㄙㄢˇㄍㄨㄤ. The pinyin is: s m 4 nguā ng. Structure: scattered light (left and right structure) (up and down structure). The part of speech is: noun.
What is the specific explanation of astigmatism? We will introduce you through the following aspects:
I. Text Description Click here to view the details of the plan.
Astigmatism s m: nguā ng (1) A visual defect in which the image of what you see is divided into many parts and becomes blurred.
Second, the national language dictionary
The name of the disease. Visual impairment caused by irregular corneal shape or abnormal lens. Astigmatism cannot combine the images seen by both eyes. In order to see the object clearly, it is necessary to adjust the focal length frequently, so there are often symptoms such as eye pain, fatigue, congestion or headache. You can wear glasses to correct it. For the translation of words into English astigmatism, see German Astigmatism us (Abbildungsfehlindroptik) _ (s, phys) _, Hornhautverkrü mmung (s, med) _, Stabsichtigkeit (s, med) _ French astigmatisme, Astigmatism e.
Third, the network interpretation
Astigmatism is a common manifestation of eye ametropia, which is related to corneal curvature. After the parallel light enters the eye, because the refractive power of the eye is different on different meridians, it cannot converge at one point (focus) and form a clear object image. This condition is called astigmatism. Astigmatism eyes cannot form a clear image by adjusting the distance between the target and the eye. Only by wearing a suitable cylindrical lens can they form a clear image on the retina. According to the manifestations, astigmatism can be divided into regular astigmatism and irregular astigmatism. The former can be corrected with lenses, and the latter can't be corrected with lenses.
Poetry about astigmatism
Why does the grass with scattered light scatter?
Idioms about astigmatism
Scattering spirits, scattered souls, scattered birds and beasts, scattered troops, scattered water and scattered ice, scattered leaves, scattered ashes, scattered retail outlets and scattered banners.
Vocabulary about astigmatism
The soul is scattered, the dust is scattered, the wind and rain are scattered, the water is scattered, the fish collapses, the birds are scattered, the birds are scattered, the animals are scattered, the ice needles are scattered, the leaves are scattered, and they jump into the nest.
Sentence making about astigmatism
1 After 8 years of Anti-Japanese War, Maochang reached its peak and started the business of framing, cutting, forming, filing, polishing and inspection. Lens batching, concave-convex surface grinding, astigmatism grinding, polishing and other services.
2. Dispersion grating mass spectrometry is used in the spectrometer, and the traditional slit entrance is replaced by a large-aperture coded aperture.
3. Now the technical difficulties such as progressive multifocal lens, deep astigmatism lens and after-cataract glasses have been overcome one by one, and now one or two patents can be obtained every year.
4. The novel also puts forward the theory of "thermal silence", that is, the thermal energy in the universe will become cold after dissipation. The author believes that all activities of human society will eventually be "thermally silent" because of thermal astigmatism.
5. The combination of optical filtering and subsequent signal processing circuit effectively eliminates the influence of stray light and dark current.
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