The word astigmatism is: astigmatism s m 4 nguā ng (1) The image of what you see is divided into many parts and blurred visual defects. 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. The phonetic notation is: ㄙㄢˇㄍㄨㄤ.
What is the specific explanation of astigmatism? We will introduce you through the following aspects:
First, list and explain the details of this house viewing plan.
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.
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
Astigmatism hanging grass fine why scattered scenery gold _ Yu Fu scattered scenery
Idioms about astigmatism
Scattering ashes, stragglers, vagrants, selling ice leaves, scattering water, scattering gardens, scattering belts, scattering doors, scattering arrays, scattering souls, birds and beasts, scattering water and scattering clouds.
Vocabulary about astigmatism
Scatter souls, wind, rain, birds and animals, water, stalls, ashes, fish, broken birds, belts and nests at the cross gate.
Sentence making about astigmatism
1. Now the technical difficulties such as progressive multifocal lens, deep astigmatism lens and post-cataract lens have been overcome one by one, and now one or two patents can be obtained every year.
It's another school day and a happy season. Laugh into school together, and knowledge will shine. Thinking collides in class, and spiritual communication is precious. Qiu Guang is bright and happy, and the road of knowledge is full of sails.
3. 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.
4. Dispersion grating mass spectrometry is used in the spectrometer, and the traditional slit entrance is replaced by a large-aperture coded aperture.
5. Objective To observe the difference of astigmatism between corneal topographer and mydriatic optometry.
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