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hyperopia    音標拼音: [h,ɑɪpɚ'opiə]
n. 遠視

遠視

hyperopia
n 1: abnormal condition in which vision for distant objects is
better than for near objects [synonym: {hyperopia},
{hypermetropia}, {hypermetropy}, {farsightedness},
{longsightedness}] [ant: {myopia}, {nearsightedness},
{shortsightedness}]

Hyperopia \Hy`per*o"pi*a\ (h[imac]`p[~e]r*[=o]"p[i^]*[.a]), n.
[NL., fr. Gr. "ype`r over 'w`ps, 'wpo`s, the eye.]
An abnormal condition of the eye in which, through shortness
of the eyeball or fault of the refractive media, the rays of
light come to a focus behind the retina, making vision for
distant objects better than for near objects; farsightedness;
-- called also {hypermetropia}. Cf. {Emmetropia}. --
{Hy`per*op"tic}, a.

Syn: hypermetropia, farsightedness, longsightedness.
[1913 Webster]


Hypermetropia \Hy`per*me*tro"pi*a\, Hypermetropy
\Hy`per*met"ro*py\, n. [NL. hypermetropia, fr. Gr. ? excessive
?, ?, the eye. See {Hypermeter}.]
An abnormal condition of the eye in which, through shortness
of the eyeball or fault of the refractive media, the rays of
light come to a focus behind the retina, making vision for
distant objects better than for near objects; farsightedness;
-- now most commonly called {hyperopia}. Cf. {Emmetropia}.
[Obsolescent]

Syn: hyperopia, farsightedness, longsightedness.
[1913 Webster]

Note: In hypermetropia, vision for distant objects, although
not better absolutely, is better than that for near
objects, and hence, the individual is said to be
farsighted. It is corrected by the use of convex
glasses. -- {Hy`per*me*trop"ic}, a.
[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:
  • Hyperopia (Farsightedness): Symptoms, Causes Treatment
    Hyperopia (farsightedness) is an eye condition that causes blurry vision when looking at things close up (like words in a book) You may also have headaches or eye strain
  • Farsightedness - Symptoms and causes - Mayo Clinic
    Farsightedness, also called hyperopia, is a common vision condition in which distant objects are clear, but close objects look blurry People with extreme farsightedness may only be able to clearly see distant objects Those with mild farsightedness may be able to clearly see closer objects
  • Farsightedness: What Is Hyperopia? - American Academy of . . .
    Farsightedness is an eye focusing disorder, not an eye disease What Causes Farsightedness? To see clearly, light rays must travel through the front of the eye (the cornea and lens) The cornea and lens work together to bend the light so it lands on the back layer of the eye, called the retina
  • Hyperopia (Farsightedness): Symptoms, Causes, Diagnosis, and . . .
    Hyperopia (farsightedness) is when you see things that are far away better than things that are close Learn more about the causes, symptoms, diagnosis, treatment, and complications of
  • Farsightedness - Wikipedia
    In severe cases of hyperopia from birth, the brain has difficulty in merging the images that each individual eye sees This is because the images the brain receives from each eye are always blurred A child with severe hyperopia can never see objects in detail
  • Farsightedness (Hyperopia) - National Eye Institute
    Farsightedness — or hyperopia — is an eye condition that makes nearby objects look blurry Read about what causes farsightedness and how it can be diagnosed and treated





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