Woah, Science Rules!

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medicalschool: World’s First Bionic Eye Receives FDA Approval http://goo.gl/SQ36e The new retinal prosthesis, called Argus II, can restore partial sight to people blinded by a degenerative eye disease. The Argus II works by substituting a small array of electrodes for the light-sensing cells that normally react to light by sending an electric signal toward the back of the retina. Those signals are relayed to the optic nerve behind the eye, and travel back along the nerve to the brain. In people with the genetic disease Retinitis pigmentosa, which affects about 100,000 people in the U.S. today, those light-sensing cells gradually stop working, resulting in total blindness. In addition to the electrode array, which is implanted in the retina at the back of the eye, the Argus II system consists of a small video camera attached to a pair of eyeglasses and a visual processor the user carries around their waist. Data from the video camera is sent to the visual processor and then back to the glasses, where it is transmitted wirelessly to the embedded electrodes.

medicalschool:

World’s First Bionic Eye Receives FDA Approval

http://goo.gl/SQ36e

The new retinal prosthesis, called Argus II, can restore partial sight to people blinded by a degenerative eye disease. The Argus II works by substituting a small array of electrodes for the light-sensing cells that normally react to light by sending an electric signal toward the back of the retina. Those signals are relayed to the optic nerve behind the eye, and travel back along the nerve to the brain. In people with the genetic disease Retinitis pigmentosa, which affects about 100,000 people in the U.S. today, those light-sensing cells gradually stop working, resulting in total blindness. In addition to the electrode array, which is implanted in the retina at the back of the eye, the Argus II system consists of a small video camera attached to a pair of eyeglasses and a visual processor the user carries around their waist. Data from the video camera is sent to the visual processor and then back to the glasses, where it is transmitted wirelessly to the embedded electrodes.

(Source: holdinghope)

Filed under medical medicine anatomy biology science

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doctorswithoutborders: Vaccines: The Price of Protecting a Child from Killer Diseases “Adding new vaccines to the national immunization program is like taking out multiple mortgages.”—Ministry of Health Official, Kenya Each year, the lives of two and a half million children are saved because they are protected against killer diseases through vaccination. Vaccinating with new vaccines should save many more lives, but high prices could prevent this from happening.

doctorswithoutborders:

Vaccines: The Price of Protecting a Child from Killer Diseases

“Adding new vaccines to the national immunization program is like taking out multiple mortgages.”—Ministry of Health Official, Kenya

Each year, the lives of two and a half million children are saved because they are protected against killer diseases through vaccination. Vaccinating with new vaccines should save many more lives, but high prices could prevent this from happening.

(via fuckyeahnarcotics)

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Image courtesy Oliver Gibbs et al, University of Sydney via CISRA. A specialized technique of photographing the retina (pictured)—the back wall of the interior of an eye—may give doctors a noninvasive way to assess heart attack and stroke risk. That’s because the same disease processes that affect the blood vessels in theheart and brain impact all the other vessels in the body too, including the eye’s, according to Oliver Gibbs of Sydney Medical School. This imaging method, highly commended in the competition, may one day replace a procedure that involves passing a wire into the heart’s arteries. Source: National Geographic

Image courtesy Oliver Gibbs et al, University of Sydney via CISRA.


A specialized technique of photographing the retina (pictured)—the back wall of the interior of an eye—may give doctors a noninvasive way to assess heart attack and stroke risk.

That’s because the same disease processes that affect the blood vessels in theheart and brain impact all the other vessels in the body too, including the eye’s, according to Oliver Gibbs of Sydney Medical School.

This imaging method, highly commended in the competition, may one day replace a procedure that involves passing a wire into the heart’s arteries.


Source: National Geographic




Filed under human eye eyeball eye retina anatomy science medicine