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myopia    音标拼音: [mɑɪ'opiə]
n. 近视

近视

myopia
n 1: (ophthalmology) eyesight abnormality resulting from the
eye's faulty refractive ability; distant objects appear
blurred [synonym: {myopia}, {nearsightedness},
{shortsightedness}] [ant: {farsightedness},
{hypermetropia}, {hypermetropy}, {hyperopia},
{longsightedness}]

Myopia \My*o"pi*a\, n. [NL. See {Myope}.] (Med.)
Nearsightedness; shortsightedness; a condition of the eye in
which the rays from distant object are brought to a focus
before they reach the retina, and hence form an indistinct
image; while the rays from very near objects are normally
converged so as to produce a distinct image. It is corrected
by the use of a concave lens.
[1913 Webster]


ametropia \am`e*tro"pi*a\ ([a^]m`[-e]*tr[=o]"p[i^]*[.a]), n.
[Gr. 'a`metros irregular 'w`ps, 'wpo`s, eye.] (Med.)
A visual impairment resulting from faulty refraction of light
rays in the eye. Subtypes include {myopia} {astigmatism} and
{hyperopia}. -- {Am`e*trop"ic} ([a^]m`[-e]*tr[o^]p"[i^]k), a.
AS
[1913 Webster PJC]


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  • Myopia (Nearsightedness): Causes, Symptoms Treatment
    Myopia (nearsightedness) is a common condition that’s usually diagnosed before age 20 It affects your distance vision — you can see objects that are near, but you have trouble viewing objects that are farther away like grocery store aisle markers or road signs
  • Myopia - Wikipedia
    A person with myopia can see clearly out to a certain distance (the far point of the eye), but objects placed beyond this distance appear blurred [19][28] If the extent of the myopia is great enough, even standard reading distances can be affected
  • Nearsightedness - Symptoms and causes - Mayo Clinic
    Nearsightedness is a common vision condition in which close objects look clear but far objects look blurry The medical term for nearsightedness is myopia Myopia happens when the shape of the eye — or the shape of certain parts of the eye — causes light rays to bend or refract
  • Nearsightedness: What Is Myopia? - American Academy of Ophthalmology
    Nearsightedness (myopia) is when close-up objects look clear but distant objects are blurry For instance, you can read a map clearly but have trouble seeing well enough to drive a car Nearsightedness is a common eye focusing disorder It has been on the rise for several decades
  • Nearsightedness (Myopia) - National Eye Institute
    Nearsightedness — or myopia — is an eye condition that makes far-away objects look blurry Read about what causes nearsightedness and how it can be diagnosed and treated
  • Myopia - Johns Hopkins Medicine
    What is myopia? Myopia, also known as nearsightedness, is a common refractive error where distant objects appear out of focus Nearsightedness occurs either because the eyeball is too long, or because the eye’s refractive power is too strong due to the shape of the cornea (lens) inside the eye
  • What Are Myopia (Nearsightedness) and Myopia Progression?
    Myopia (nearsightedness) is a refractive error that causes blurry distance vision It is the most common cause of impaired vision in people under the age of 40 Myopia usually begins in childhood, but it can continue to worsen into early adulthood This is called myopia progression
  • Myopia (Nearsightedness) Q A - Advanced Family Eye Care
    Myopia is caused by a misshaped eye – the eyeball is either too long, or the cornea (the clear outer layer of the eye) is curved too sharply This affects the eye’s ability to bend (refract) light onto the retina With a normal eye, light is refracted onto the retina for a clear image at a distance
  • What is Myopia? (Nearsightedness): Symptoms Treatment
    Myopia, also known as nearsightedness, is a widespread vision condition Studies estimate that more than 40% of people in the United States have it While it may seem like a minor inconvenience, untreated myopia can have long-term consequences for your eye health and overall well-being
  • Myopia: Causes, Symptoms, and Treatment Options
    Discover comprehensive information about myopia, including its causes, symptoms, and effective treatment options





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