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hyperopia    音标拼音: [h,ɑɪpɚ'opiə]
n. 远视

远视

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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  • 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
  • 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: What Is Hyperopia? - American Academy of Ophthalmology
    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
  • 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
  • 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 Hypermetropia (Farsightedness): What is it?
    Hyperopia, or farsightedness, is a common vision problem, affecting about a fourth of the population People with hyperopia can see distant objects very well, but have difficulty focusing on objects that are up close The condition is sometimes referred to as "hypermetropia" rather than hyperopia
  • Hyperopia - Ophthalmology | UCLA Health
    Hyperopia may be inherited Babies and young children tend to be slightly hyperopic As the eye grows and becomes longer, hyperopia lessens Presbyopia, a condition with similar symptoms, has an entirely different cause that is related to aging Signs and Symptoms Blurred vision, inability to see near objects clearly Treatment Eyeglasses





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