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cataract    音标拼音: [k'ætɚækts]
n. 大瀑布,奔流,洪水,白内障

大瀑布,奔流,洪水,白内障

cataract
n 1: an eye disease that involves the clouding or opacification
of the natural lens of the eye
2: a large waterfall; violent rush of water over a precipice

Cataract \Cat"a*ract\, n. [L. cataracta, catarracles, a
waterfall, Gr. ?, ?, fr. ? to break down; in the passive, to
fall or rush down (of tumors) to burst; kata` down ? to
break.]
1. A great fall of water over a precipice; a large waterfall.
[1913 Webster]

2. (Surg.) An opacity of the crystalline lens, or of its
capsule, which prevents the passage of the rays of light
and impairs or destroys the sight.
[1913 Webster]

3. (Mach.) A kind of hydraulic brake for regulating the
action of pumping engines and other machines; -- sometimes
called {dashpot}.
[1913 Webster]

146 Moby Thesaurus words for "cataract":
Niagara, ablepsia, amaurosis, benightedness, blepharitis,
blind side, blind spot, blindfolding, blinding, blindness,
blurring the eyes, cascade, cataclysm, cecity, choroiditis, chute,
collapse, come down, comedown, conjunctivitis, crash, cross-eye,
darkness, debacle, declension, declination, defective vision,
defluxion, deluge, depriving of sight, descend, descending,
descension, descent, detached retina, dim-sightedness, dip down,
down, downbend, downcome, downcurve, downfall, downflow, downgrade,
downpour, downrush, downtrend, downturn, downward trend, drop,
drop down, drop off, drop serene, dropping, economic blindness,
engulf, esotropia, ever-during dark, excecation, eye defect,
eyelessness, fall, fall down, fall off, falling, falls, flood,
flooding, force, fresh, freshet, glaucoma, go down, go downhill,
gravitate, gravitation, gutta serena, hoodwinking, inclination,
inundate, inundation, iritis, keratitis, lack of vision, linn,
lose altitude, making blind, nappe, niphablepsia, optic neuritis,
overbrim, overflow, overrun, overwhelm, parachute,
partial blindness, pink eye, pitch, plummet, plummeting, plunge,
pounce, pour, pour down, pour out, pour over, precipitate,
psychic blindness, rain, rapids, reduced sight, retinoblastoma,
river, run over, sault, sightless eyes, sightlessness, slop, slosh,
snow blindness, soul-blindness, spate, spill, spill out,
spill over, spiritual blindness, spout, stone-blindness, stoop,
sty, submerge, swamp, sweep, swoop, torrent, total blindness,
trachoma, trend downward, unenlightenment, unseeingness, uveitis,
walleye, waterfall, waterflood, watershoot, whelm


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  • Cataracts - Symptoms and causes - Mayo Clinic
    A cataract is a clouding of the lens of the eye, which is typically clear For people who have cataracts, seeing through cloudy lenses is often like looking through a frosty or fogged-up window
  • Cataract - Wikipedia
    There are many types of cataracts, differentiated by where in the lens the clouding occurs The three most common types of cataracts are nuclear, which affect the center of the lens, cortical which affect the outer part of the lens, and posterior subcapsular which develop at the back of the lens
  • Cataracts: What They Are, Symptoms, Types Treatment
    Cataracts happen when proteins in the lens in your eye break down This makes the lens cloudy and can affect your vision They usually happen naturally as you age, but eye injuries and some health conditions can cause them, too An eye doctor will surgically remove your natural lens and insert a clear artificial replacement
  • What Are Cataracts? - American Academy of Ophthalmology
    Aging is the most common cause of cataracts This is due to normal eye changes that begin to happen after age 40 That is when normal proteins in the lens start to break down This is what causes the lens to get cloudy People over age 60 usually start to have some clouding of their lenses
  • Cataracts - Diagnosis and treatment - Mayo Clinic
    When your prescription glasses or contacts can't clear your vision, the only effective treatment for cataracts is surgery Talk with your eye doctor about whether surgery is right for you Most eye doctors suggest considering cataract surgery when your cataracts begin to affect your quality of life
  • Types of Cataracts: Causes, Symptoms and Treatment
    In this guide, we explain the main types of cataracts, including the three types most commonly asked about, their meanings, and how they affect daily life You'll learn the signs to watch for, how doctors distinguish between different types of cataracts, and when treatment is typically recommended
  • Cataracts Explained: Symptoms, Causes and Treatment Options
    Discover what cataracts are, why they develop, symptoms to watch for, and how modern cataract surgery can help you regain clearer vision
  • CATARACT Definition Meaning - Merriam-Webster
    The meaning of CATARACT is a clouding of the lens of the eye or of its surrounding transparent membrane that obstructs the passage of light How to use cataract in a sentence
  • Cataracts in adults - NHS
    Find out about cataracts in adults including what the symptoms are and how treatment with surgery can help
  • What Are Cataracts? Symptoms, Causes, and Treatments - WebMD
    If your child’s cataract is small and doesn’t affect their vision, it may not need to be removed But if it does affect their eyesight, it should be treated as soon as possible





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