Online Google Dictionary

cataract 中文解釋 wordnet sense Collocation Usage Collins Definition
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cataracts, plural;
  1. A large waterfall

  2. A sudden rush of water; a downpour
    • - the rain enveloped us in a deafening cataract
  3. A medical condition in which the lens of the eye becomes progressively opaque, resulting in blurred vision
    • - she had cataracts in both eyes

  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
  3. A cataract is a clouding that develops in the crystalline lens of the eye or in its envelope, varying in degree from slight to complete opacity and obstructing the passage of light. ...
  4. Cataract is the self-titled fifth full-length release from the Swiss Groove Metal band Cataract, and also their third album signed to Metal Blade Records.
  5. A waterspout; A large waterfall; steep rapids in a river; A downpour, flood of water; A disease of the eye causing its opacity and, unless treated, leading to blindness
  6. (Cataracts) A clouding of the lens of the eye. Usually a normal consequence of the aging process, cataract surgery has now become a brief, painless out-patient procedure. We take pride in personally explaining your diagnosis, treatment plan and post operative care. ...
  7. (Cataracts) Any opacification (loss of transparency) of the lens or its capsule. They are not considered significant if they do not interfere with vision.
  8. (Cataracts) Damage to the eye lens, which impairs vision. It is often caused by UV-B radiation, which is usually filtered out by the ozone layer.
  9. (Cataracts) Like humans, dogs can get cataracts. If the dog is in good health, cataracts can be surgically removed usually with good results.
  10. (Cataracts) Usually develop gradually and without pain as the lens in the eye loses transparency and the lens material yellows. The result is gradual loss of brightness and a slight skewing of color perception that usually goes unnoticed. ...
  11. (Cataracts) a condition which causes clouding in the lens of the eye. They are commonly associated with increased age. Other factors causing cataracts can include UV light exposure, trauma, smoking, and certain medications and health conditions. ...
  12. (Cataracts) a film that can form in the eye and cause complete or partial opacity of the ocular lens, or blurry vision; in myotonic dystrophy patients, often posterior subcapsular iridescent cataracts form; they are sometimes referred to as Christmas-tree cataracts
  13. (Cataracts) a medical condition that is usually developed along with aging. It refers to the natural lens of the eye developing an opacity that affects the visual capabilities of a person.
  14. (Cataracts) are the leading cause of blindness worldwide
  15. (Cataracts) cannot be prevented because lens changes occur as the eye ages, however precautions may slow their development.
  16. (Cataracts) develop when the eye’s natural crystalline lens is cloudy instead of clear. In about 0.4% of all births, congenital cataracts are found or soon develop.
  17. (Cataracts) opaque colourisation of the lens, which is usually transparent, causing partial or complete blindness usually occurring in one or both of the eyes.
  18. (cataracts) the white water regions of the Nile River. Six total, they extended from Aswan to just above Khartoum. First Cataract, at Aswan ,served as the natural barrier along the southern border of Egypt
  19. Cataracts can be attributed to several causes, including the aging process, injury or heredity. (See juvenile cataracts.)
  20. Posterior subcapsular cataracts were observed in preclinical toxicity studies in rats and dogs administered bexarotene daily for 6 months. In 15 of 79 patients who had serial slit lamp examinations, new cataracts or worsening of previous cataracts were found. ...
  21. A condition of the crystalline lens, in which the normally clear lens becomes clouded or yellowed, resulting in blurred or foggy vision. Cataracts may be caused by aging, eye injuries, disease, heredity or birth defects.
  22. Opacity or cloudiness of the crystalline lens, which may prevent a clear image from forming on the retina. Surgical removal of the lens may be necessary if visual loss becomes significant, with lost optical power replaced with an intraocular lens, contact lens, or aphakic spectacles. ...
  23. eye disease causing an opacity in the lens
  24. Clouding of the natural lens of the eye, usually caused by aging in conjunction with other risk factors, such as exposure to the sun's UV rays, smoking, steroid intake and diabetes. ...
  25. Gradual clouding of the crystalline lens resulting in reduced vision or eventual blindness, correctable by cataract surgery .