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astigmatic    
a. 乱视的;散光的

乱视的;散光的

astigmatic
adj 1: of or relating to a defect in the eye or in a lens caused
by a deviation from spherical curvature which prevents
light rays from meeting at a common focus and so results
in distorted images [ant: {anastigmatic}, {stigmatic}]


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  • Astigmatism - Wikipedia
    Astigmatism is a type of refractive error due to rotational asymmetry in the eye's refractive power The lens and cornea of an eye without astigmatism are nearly spherical, with only a single radius of curvature, and any refractive errors present can be corrected with simple glasses
  • Astigmatism - Symptoms causes - Mayo Clinic
    Astigmatism is a type of refractive error caused when either the cornea or the lens has mismatched curves This makes vision blurry because there are two image points Astigmatism may occur in combination with other refractive errors, which include: Nearsightedness (myopia)
  • Astigmatism - American Academy of Ophthalmology
    Astigmatism is caused by a cornea or lens that has a different shape than normal Astigmatism is very common Doctors don't know why the shape of the cornea or lens varies from person to person But they do know the risk of getting astigmatism is inherited (passed down from parents)
  • Astigmatism: Causes, Symptoms, Diagnosis, and Treatment - WebMD
    Astigmatism is fairly easy for an eye doctor to fix with glasses, contacts, or surgery Symptoms of astigmatism may include: Is astigmatism genetic? Experts think the condition is genetic,
  • Astigmatism: Causes, Definition, Types, Treatment - All About Vision
    Astigmatism is a condition caused by subtle flaws in the way your eye bends light (a process called refraction) that passes to the retina, the light-sensitive area at the back of the eyeball The optic nerve transmits nerve impulses from the retina to the brain, which translates them into eyesight
  • Astigmatism - National Eye Institute
    Learn about the symptoms, causes, diagnosis, and treatment of astigmatism
  • Comprehensive Guide on Astigmatism Its Treatment
    Astigmatism is a common vision condition that affects how the eye focuses light, leading to blurred or distorted vision at any distance It occurs when the cornea, the clear front surface of the eye, is irregularly shaped
  • Astigmatism: Eye Changes, Testing, and Correction
    In astigmatism, the cornea (the clear dome that covers your eye) or the lens (which focuses light rays on the light-sensitive retina) is abnormally shaped Wearing contact lenses or glasses that refocus light rays where they should be can enable you to see as clearly as possible
  • Astigmatism Glasses, Lens, Vision Test, Causes, Treatment
    In an eye with astigmatism, vision is blurred due to the inability of the optical elements of the eye to focus a point object into a sharply focused point image on the retina
  • What Is Astigmatism? Causes, Symptoms Treatment
    Astigmatism is a common eye problem that makes your vision blurry at near and far distances It occurs when the cornea or lens of the eye is irregularly shaped When the eye's curvature isn't smooth and even, light rays cannot properly focus, causing blurred vision





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