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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
    Symptoms of cataracts include: Clouded, blurred or dim vision Trouble seeing at night Sensitivity to light and glare Need for brighter light for reading and other activities Seeing "halos" around lights Frequent changes in eyeglass or contact lens prescription Fading or yellowing of colors Double vision in one eye
  • Cataracts: Signs, Symptoms Treatment Options - Cleveland Clinic
    Cataracts are cloudy areas that form on your eye’s lens Age-related cataracts are the most common type Symptoms include blurry vision and glare around lights Cataract surgery removes your clouded lens and replaces it with a clear artificial lens called an IOL Providers recommend surgery when cataract symptoms interfere with your daily life
  • Cataracts - Causes, Symptoms, Risk Factors, Diagnosis . . . - WebMD
    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 your eyesight There are many
  • 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
  • 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:
  • Cataract: Symptoms, diagnosis, and treatment - Harvard Health
    A cataract is a clouding of the lens This distorts or blocks the passage of light through the lens, causing cloudy or blurred vision, other visual problems, and even blindness The name cataract comes from the term for "huge waterfall," which is how some people describe their clouded sight: like trying to look through a waterfall
  • How to Diagnose and Treat Cataracts - WebMD
    To find out if you have cataracts, your doctor will want to know all about your symptoms They'll ask if things look blurry or hazy or if the glare from lights bothers you, especially at night
  • Cataract Symptoms and How to See Better - Verywell Health
    A cataract is a condition in which the lens of your eye becomes cloudy, which is common with age You may have no symptoms until a cataract grows larger, causing blurred vision, poor night vision, and faded colors Outpatient surgery can remove a cataract and restore good vision
  • 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
  • Everything to Know About Cataracts - College of Medicine
    Cataract surgery is a low-risk procedure that offers a permanent solution Cataracts occur when the eye’s lenses become cloudy over time They are very common, affecting more than 65 million people worldwide and are a leading cause of vision loss and blindness Because cataracts occur slowly and worsen over time, you might not notice eye
  • 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
  • Cataracts Surgery, First Signs, Symptoms, Types Treatment - MedicineNet
    A cataract is an eye disease that clouds the eye's lens and vision Learn the causes, treatment, symptoms, diagnosis, and surgery used to treat cataracts
  • Cataracts - Diagnosis and treatment - Mayo Clinic
    To determine whether you have a cataract, your eye doctor will review your medical history and symptoms They also will perform an eye exam Your doctor may do several tests, including: Vision test A vision test, also called a visual acuity test, uses an eye chart to measure how well you can read a series of letters
  • Cataract - adult: MedlinePlus Medical Encyclopedia
    A cataract is a clouding of the lens of the eye The lens of the eye is normally clear It acts like the lens on a camera, focusing light as it passes to the back of the eye Until a person is around age 45, the shape of the lens is able to change This allows the lens to focus on an object, whether it is close or far away





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