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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:
  • Farsightedness - Symptoms and causes - Mayo Clinic
    Farsightedness (hyperopia) is a common vision condition in which you can see distant objects clearly, but objects nearby may be blurry The degree of your farsightedness influences your focusing ability
  • Hyperopia (Farsightedness): Symptoms, Causes Treatment
    Hyperopia (farsightedness) is a common eye condition that may cause blurry close-up vision You can correct it with glasses, contact lenses or surgery
  • Hyperopia (Farsightedness): Symptoms, Causes, Diagnosis, and . . . - WebMD
    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
    Far-sightedness, also known as long-sightedness, hypermetropia, and hyperopia, is a condition of the eye where distant objects are seen clearly but near objects appear blurred This blur is due to incoming light being focused behind, instead of on, the retina due to insufficient accommodation by the lens [6]
  • Farsightedness: What Is Hyperopia? - American Academy of Ophthalmology
    Farsightedness (also called hyperopia) is a refractive error This is when the eye does not refract—or bend—light properly Generally, a farsighted person sees clearly far, but near vision is blurry But others experience farsightedness differently Some people may not notice any problems with their vision, especially when they are young
  • 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
  • Farsightedness: What It Is, How Its Treated - Vision Center
    Hyperopia, or farsightedness, is a common refractive error that causes close objects to appear blurry It’s a complex condition that ranges from mild to severe and is usually present at birth
  • Hyperopia - StatPearls - NCBI Bookshelf
    The term hyperopia refers to the refractive condition of the eye where parallel light rays coming from the infinity are focussed behind the neurosensory retina (after refraction through the ocular media ) when accommodation is at rest
  • Hyperopia - EyeWiki
    Hyperopia is also known as “farsightedness” or “hypermetropia” It is an ocular condition in which the refracting power of the eye causes light rays entering the eye to have a focal point that is posterior to the retina while accommodation is maintained in a state of relaxation
  • Hyperopia (Farsightedness): Vision, Effects, Correction
    Hyperopia, or farsightedness, is a condition in which you can see faraway objects clearly, but have blurry vision for objects that are closer to your face You may have hyperopia in both eyes or just one





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