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myopia    音標拼音: [mɑɪ'opiə]
n. 近視

近視

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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英文字典中文字典相關資料:
  • Myopia (Nearsightedness): Causes, Symptoms Treatment
    Myopia (nearsightedness) means objects that are near are clear and objects that are farther away are blurry Treatment includes glasses, contacts and surgery
  • 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: 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 - Symptoms and causes - Mayo Clinic
    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 (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 more 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) | John A. Moran Eye Center | University of . . .
    What is Myopia? Myopia, also known as nearsightedness, causes poor long-distance vision Nearsighted people have longer eyeballs or a higher curvature of their cornea This can occur due to genetics or lifestyle components, such as overusing the eye’s focusing mechanism with close work
  • Myopia—common causes, symptoms, and possible treatments
    Learn all about the eye condition of myopia Discover the root cause of myopia, how to find out if you have myopia, and learn how to manage or correct it
  • Myopia (nearsightedness): Definition, causes, and treatment
    Myopia, or nearsightedness, is a common eye condition that makes focusing on objects in the distance difficult However, items that are close will likely appear perfectly clear People can treat





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