The water rushes over and around the fearsome cataracts in a boiling confusion.
More than 3, 000 years ago, between the first and second cataracts on the West Bank and the Nil, the Egyptian Pharaoh commanded a colossal temple, and a smaller one along with it, to be carved out of the rock.
The Boston team investigated whether there was an association between the development of cataracts and lead levels in two bones - the tibia (shin bone) and the patella (kneecap).
Soon after the trial Lillehei developed cataracts, a complication of the lymphosarcoma he had survived as a young man.
The biggest advance in actually lessening the problem happened in the 1950s with cataracts.
Ultraviolet-light exposure potentially causes melanoma and contributes to the development of cataracts.
Just upstream from modern day Brazzaville city are the huge "cataracts" - rocks which, for millenia, have stopped river boats passing this point.
Among the patients arriving on the river bank to have their cataracts removed and their hernias fixed at the new hospital is a pregnant woman who is bleeding alarmingly.
Having lost one eye as a child, he suffers inoperable cataracts on the other.
And they did not suffer cataracts of the eye.
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The drivers will wear special glasses that simulate the kind of vision someone with cataracts or glaucoma has.
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Cataracts are one of the most common causes of blindness in the world.
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This involved the training of paramedics to handle cataracts, for example.
There is some evidence that the drug does increase the risk of developing uterine cancer and cataracts.
It acts as a sunlight filter, shielding life on Earth from harmful ultraviolet rays that put humans at greater risk of skin cancer and cataracts and harm marine life, the agency said.
The juice, say the fans, can cure or prevent everything from cataracts to cancer.
The study found a similar beneficial effect for people with cataracts who don't normally get a lot of lutein and zeaxanthin in their diet.
The queue for eye surgery has risen by 140% in the past ten years, mainly because there are more elderly people needing cataracts removed.
In terms of infrared radiation exposure (excessive amounts of which can cause cataracts), getting zapped by one of these scanners is the equivalent of having a video camera pointed at you--or reading by a 40-watt lightbulb.
The Caribbean Mercy is smaller and has two operating theatres which deal mainly with eye surgery (mostly cataracts).
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