News tagged with optic nerve

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Scientists solve mystery of the eye

(PhysOrg.com) -- Scientists have a good overall understanding of human vision: when light enters our eyes, it is focused by the lens and strikes the retina in the back of the eye. The light causes some of ...

Nov 17, 2011 feature
4.3 / 5 (71) 14 | with audio podcast

Stem cells reverse blindness caused by burns

(AP) -- Dozens of people who were blinded or otherwise suffered severe eye damage when they were splashed with caustic chemicals had their sight restored with transplants of their own stem cells - a stunning ...

Jun 23, 2010
5 / 5 (15) 0

Study explains why light worsens migraine headaches

Ask anyone who suffers from migraine headaches what they do when they're having an attack, and you're likely to hear "go into a dark room." And although it's long been known that light makes migraines worse, the reason why ...

Jan 10, 2010
4.9 / 5 (11) 2 | with audio podcast

Orbital samples with sight-saving potential

Those who travel to space are rewarded with a beautiful sight - planet Earth. But the effects of space travel on the human sense of sight aren't so beautiful. More than 30 percent of astronauts who returned ...

Dec 11, 2013
5 / 5 (10) 0

Artificial retina helps some blind people

For two decades, Eric Selby had been completely blind and dependent on a guide dog to get around. But after having an artificial retina put into his right eye, he can detect ordinary things like the curb and ...

Feb 14, 2011
5 / 5 (9) 4

Birds 'See' Earth's Magnetic Field

When birds migrate over long distances -- sometimes thousands of miles -- they usually end up in exactly the same place year after year. Such accurate feats of navigation, accomplished by millions of birds ...

Nov 16, 2009
4.4 / 5 (9) 2