cataract

American  

[kat-uh-rakt] / ˈkæt əˌrækt /

noun

1. a descent of water over a steep surface; a waterfall, especially one of considerable size.

2. any furious rush or downpour of water; deluge.

3. Ophthalmology.

   1. an abnormality of the eye, characterized by opacity of the lens.

   2. the opaque area.

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cataract British  

/ ˈkætəˌrækt /

noun

1. a large waterfall or rapids

2. a deluge; downpour

3. pathol

   1. partial or total opacity of the crystalline lens of the eye

   2. the opaque area

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cataract Scientific  

/ kăt′ə-răkt′ /

1. An opacity of the lens of the eye or the membrane that covers it, causing impairment of vision or blindness.

2. A waterfall in which a large volume of water flows over a steep precipice.

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cataract Cultural  

1. A loss in the transparency of the lens of the eye, which reduces a person's ability to see. The condition can be treated by surgically removing the lens and replacing it with an artificial one, or with corrective eyeglasses or contact lenses.

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Other Word Forms

• cataractal adjective
• cataracted adjective
• cataractous adjective

Etymology

Origin of cataract

First recorded in 1350–1400; Middle English cataracte, from Latin catar(r)acta, from Greek katarráktēs “waterfall, floodgate, portcullis” (noun), “downrushing” (adjective), from katarássein “to dash down,” from kat- cata- + arássein “to dash, smite”

Example Sentences

As a side effect of his surgery, Hamid said he later developed a cataract in his right eye and chose to have it treated privately before it affected his vision.

From BBC

However, it cited the Journal’s reporting that UnitedHealth diagnosed diabetic cataracts—triggering extra payments—in patients who had already received cataract surgery as an example of an “inappropriate or mistaken” strategy by the company.

From The Wall Street Journal

He has spearheaded efforts to plant trees, clean up oceans, rivers and beaches, pay for strangers’ cataract surgeries and prosthetic limbs and has donated millions to charities such as Make-A-Wish and food banks.

From The Wall Street Journal

But myopia also increases the risk of cataracts, glaucoma, retinal detachment and other eye diseases later in life.

From The Wall Street Journal

When ozone levels drop, more UV rays reach the ground, increasing the risk of crop damage and contributing to higher rates of skin cancer and cataracts, along with other negative health effects.

From Science Daily