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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) 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
  • New Study Finds Low-Dose Eye Drops Successful in Managing Adult Myopia . . .
    Groundbreaking research from the University of Houston shows that a single low-dose atropine eye drop can produce daylong effects in managing myopia, or nearsightedness, which affects roughly one-third of U S adults Professor of Optometry Lisa Ostrin and postdoctoral researcher Barsha Lal are
  • 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 - Myopia Institute
    Myopia is a common cause of correctable vision loss, with uncorrected myopia remaining the leading cause of distance vision impairment globally Individual studies show variations in the prevalence of myopia and high myopia across regions and ethnic groups
  • Myopia: Causes, Symptoms, and Treatment Options
    Discover comprehensive information about myopia, including its causes, symptoms, and effective treatment options





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