Refractive errors should include:

Written by Zheng Xin
Ophthalmology
Updated on September 12, 2024
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Refractive errors include myopia, hyperopia, astigmatism, and anisometropia. Myopia can be divided into refractive myopia and axial myopia. Hyperopia can also be categorized based on the state of accommodation into manifest hyperopia, latent hyperopia, and total hyperopia. Astigmatism is divided into simple hyperopic astigmatism, simple myopic astigmatism, compound myopic astigmatism, compound hyperopic astigmatism, and mixed astigmatism.

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Written by Hu Shu Fang
Ophthalmology
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What is refractive error?

Refractive errors in ophthalmology include myopia, hyperopia, and astigmatism. The optical principle behind these is that parallel light rays, after passing through the optical system of the eyeball, do not focus on the retina, and therefore do not form a clear image. This condition is known as a refractive error. In everyday life, some people mistakenly believe that presbyopia is also a refractive error, but presbyopia is not a refractive error; it is a physiological condition. The common refractive errors are the three types I just mentioned: myopia, hyperopia, and astigmatism.

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Written by Peng Xi Feng
Ophthalmology
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Is refractive amblyopia easy to treat?

Early detection, treatment, and training for refractive amblyopia can potentially restore normal vision, but the extent of recovery varies from person to person. Since the principles behind various amblyopia treatment methods differ and have their advantages, comprehensive therapy is superior to single therapy. For a child with amblyopia in one eye, the routine initially involves covering the healthy eye to give the amblyopic eye more focused exercise, combined with precise visual acuity training, stimulation from amblyopia treatment devices, and so forth. After months or years of treatment, the child's vision in the amblyopic eye will show significant and rapid improvement.

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Written by Peng Xi Feng
Ophthalmology
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What is the difference between refractive error and nearsightedness?

Myopia is a type of refractive error, which refers to the condition where, when the eye is not adjusting, parallel light rays after passing through the refractive action of the eye, do not form a clear image on the retina, but rather image in front of or behind the retina. This includes hyperopia, myopia, and astigmatism. When parallel light rays image in front of the retina after passing through the eye's refractive action, it is called myopia.

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Written by Peng Xi Feng
Ophthalmology
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How to treat refractive errors of the eyes?

Refractive error refers to the condition where, without accommodation, parallel light rays passing through the refractive media of the eye do not form a clear image on the retina, but rather form an image in front of or behind the retina. This includes hyperopia (farsightedness), myopia (nearsightedness), and astigmatism. For myopia treatment, light to moderate myopia can be corrected with appropriate concave lenses; in cases of hyperopia, if vision is normal and there are no subjective symptoms, no treatment is needed. However, if there are symptoms of visual fatigue, appropriate convex lenses should be used for correction; astigmatism requires the correction with cylindrical lenses.

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Written by Li Zhen Dong
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What glasses should be worn for refractive errors?

Refractive errors include myopia, hyperopia, presbyopia, astigmatism, and amblyopia. If it is myopia, concave lenses should be used; convex lenses are used for hyperopia; astigmatism requires cylindrical lenses. If it is strabismus, the appropriate prism should be used. In the case of amblyopia, pupil dilation, optometry, and fitting glasses should be performed, along with active amblyopia treatment. When these conditions occur, proper eye care should be maintained, including adequate rest, reducing close-up activities, avoiding eye strain, regularly revisiting the doctor, and frequent checks and corrections for vision are necessary.