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hypermetropia    
n. 遠視

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hypermetropia
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]

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英文字典中文字典相關資料:
  • 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]
  • Hypermetropia (Long-Sightedness): Symptoms, and Treatment - Patient
    What is hypermetropia? Hypermetropia (long-sightedness) is a refractive error and occurs when light from near objects is not quite brought to focus in time to hit the retina The point of focus would in fact fall behind the retina, if the light could get that far
  • 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
  • What is Hypermetropia (Long-sightedness)? Causes, Symptoms and . . .
    Hypermetropia, also known as long-sightedness, is a refractive error where distant objects appear clearer than close objects It occurs when the eyeball is too short or the cornea is too flat This refractive error can be caused by genetic factors or age-related changes in the lens
  • Hypermetropia : Facts, onset, types, diagnosis, treatment | FactDr
    Hypermetropia (also called hyperopia) is the condition of long-sightedness; a person is clearly able to see distant things but objects nearby appear blurred It is a case of structural defect in the eye, where the eye lenses are elongated and thus not able to focus the image on the retina
  • Hypermetropia: Causes, Symptoms Treatment - Laxmi Eye Hospital
    Hypermetropia is a common refractive error that can significantly impact one’s ability to see clearly up close However, with modern treatments such as eyeglasses, contact lenses, and LASIK surgery, the condition is highly manageable
  • Hypermetropia (Long-Sightedness): Causes and Treatment - OCL Vision
    Understanding hypermetropia (long-sightedness): symptoms, causes and treatments Hypermetropia occurs when the power of the eye is insufficient or the eye is too short, causing light rays to focus behind the retina rather than directly on it
  • Causes of Hypermetropia: Understanding Farsightedness
    Hypermetropia is a refractive error that occurs when the eyeball is shorter than normal or the cornea is flatter than usual This causes light entering the eye to focus behind the retina instead of directly on it, resulting in blurred vision for nearby objects
  • 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
  • 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





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