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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 scatters and blocks the light as it passes through the lens This prevents a sharply defined image from reaching your retina As a result, your vision becomes blurred
  • Cataracts: Signs, Symptoms Treatment Options - Cleveland Clinic
    Cataract surgery is the only way to remove cataracts and restore your clear vision During cataract surgery, an ophthalmologist removes your clouded natural lens and replaces it with an intraocular lens (IOL) An IOL is an artificial lens that permanently stays in your eye
  • Cataracts - Causes, Symptoms, Risk Factors, Diagnosis . . . - WebMD
    Cataract Causes and Types Cataracts form when protein builds up in the lens of your eye and makes it cloudy This keeps light from passing through clearly It can cause you to lose some of
  • What Are Cataracts? - American Academy of Ophthalmology
    Cataracts are a very common reason people lose vision, but they can be treated You and your ophthalmologist should discuss your cataract symptoms Together you can decide whether you are ready for cataract surgery
  • Cataract - Wikipedia
    Cataract formation is primarily driven by oxidative stress, which damages lens proteins, leading to their aggregation and the accumulation of clumps of protein or yellow-brown pigment in the lens This reduces the transmission of light to the retina at the back of the eye, impairing vision
  • Cataracts - National Eye Institute
    A cataract is a cloudy area in the lens of your eye More than half of all Americans age 80 and older either have had cataracts or have had surgery to get rid of cataracts Learn about the types, symptoms, and causes of cataracts and how your doctor will diagnose and treat them
  • Signs and Symptoms of Cataracts: Early Warning Signs for Vision Changes
    Cataract surgery remains the only definitive treatment for advanced cataracts, involving removal of the clouded natural lens and replacement with an artificial intraocular lens (IOL) This procedure boasts over 95% success rates and typically results in significant vision improvement Modern cataract surgery utilizes advanced techniques including:
  • Cataracts | Cataract Surgery - MedlinePlus
    A cataract is a clouding of the lens in your eye It affects your vision Cataracts are very common in older people Learn about symptoms and surgery
  • Cataract: Symptoms, diagnosis, and treatment - Harvard Health
    Your story of your visual symptoms is an important part of diagnosing cataract Your eye doctor will likely widen (dilate) your pupils with medication and examine your eyes, and give you a visual acuity test to check your vision
  • What Is a Cataract? - All About Vision
    A cataract is when the lens inside your eye gets cloudy The lens is normally clear, so any cloudiness can cause changes in your eyesight A cataract can block most or all of your vision if it isn't treated You can develop cataracts at any age, but they get more common as you get older





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