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Retina

— Health and Wellbeing

Researchers restore vision to mice by unlocking retina’s neural code

By - August 20, 2012 1 Picture
Retinal prostheses such as the Argus II, Bio-Retina and the Retina Implant AG microchip all work – more or less – by stimulating the retina’s ganglion cells with light-induced electrical signals. The images produced in the patient’s visual cortex tend to be quite rudimentary, however. This is partially because the rate at which the signals are sent isn’t the same as the rate of neural impulses normally produced by a retina. Now, researchers have deciphered the neural code used by mouse ganglion cells, and used it to create a prosthesis that reportedly restores normal vision to blind mice. They have additionally deciphered the neural code of monkeys, which is close to that used by humans, so a device for use by blind people could also be on the way. Read More
— Health and Wellbeing

Retinal chip implant undergoes clinical trials

By - August 6, 2012 7 Pictures
Retinitis pigmentosa (RP) is a degenerative eye disease that affects 200,000 people in the United States and Europe and has left 15 million people permanently blind worldwide. German biotechnology firm Retina Implant AG has developed a microchip that provides a useful degree of artificial vision in patients who have been blind for even long periods. The 3 x 3 mm (0.118 in) chip is implanted below the surface of the retina where it electrically stimulates the optical tissues. After successful clinical trials in Germany, the chip is now being tested in Hong Kong and Britain before moving on to planned trials in the U.S. Read More
— Health and Wellbeing

Bio-Retina to enter clinical trials in 2013

By - July 20, 2012 7 Pictures
At least 25-30 million people worldwide have age-related macular degeneration (AMD), one of the leading causes of blindness in middle-aged and older adults. The Israeli start-up Nano Retina has announced their new Bio-Retina, a tiny array of photodetectors which can be implanted directly on the retinal surface. Ready to enter clinical trials in 2013, the Bio-Retina restores vision to AMD sufferers almost immediately following the simple implantation process. Read More

LG unveils five-inch full HD smartphone display

LG has introduced an impressive new smartphone display that's expected to come to new handsets in the second half of 2012. The panel is five inches across, and features a pixel density of 440ppi with an aspect ratio of 16:9, capable of displaying 1080p HD content. This impressive new display trumps Apple's retina display, as well as the larger screens on phones like the Galaxy Note in terms of size versus pixel density. Read More
— Health and Wellbeing

New light-powered retinal prosthesis could restore sight to the blind

By - May 15, 2012 2 Pictures
Age-related macular degeneration is the leading cause of blindness in North America, while retinitis pigmentosa causes approximately 1.5 million people worldwide to lose their sight every year. Individuals afflicted with retinal degenerative diseases such as these might someday be able to see again, however, thanks to a device being developed at California’s Stanford University. Scientists there are working on a retinal prosthesis, that uses what could almost be described as miniature solar panels to turn light signals into nerve impulses. Read More
— Medical

Physicians grow retinas from human blood-derived stem cells

By - March 18, 2012 2 Pictures
Among the primary causes of adult-onset blindness are degenerative diseases of the retina, such as macular degeneration and retinitis pigmentosa. While some treatments have been developed that slow down the rate of degeneration, the clinical situation is still generally unsatisfactory. But if you could grow a new retina, transplant might be a possible cure. Now new hope is springing up from a research project at the University of Wisconsin-Madison in which scientists have succeeded in growing human retinal tissue from stem cells. Read More

Apple sends out iPad 3 event invites, quad-core Retina display tablet expected next week

A new iPad is on the horizon. Apple sent out invites today to an event next Wednesday at the Yerba Buena Center for the Arts in San Francisco, where it promises to “have something you really have to see. And touch.” The event is set to go down at 10am, and is widely speculated to be the announcement of the iPad 3. The tablet is widely rumored to have an updated 2048x1536 “Retina” display, faster processor, LTE, and an 8-megapixel camera. Read More
— Health and Wellbeing

Human embryonic stem cell transplants found to improve vision in clinical trials

By - January 24, 2012 1 Picture
UCLA researchers are reporting a milestone in the therapeutic use of stem cells after two legally blind patients who received transplants of specialized retinal cells derived from human embryonic stem cells reported a modest improvement in their vision. Monitoring of the patients’ progress over a four month period also found no safety concerns, signs of rejection or abnormal cell growth. The researchers are claiming that the success of the procedure could pave the way for a new therapy to treat eye diseases. Read More
— Health and Wellbeing

“Artificial retina” wins European approval

By - May 30, 2011 2 Pictures
The Argus II Retinal Implant from California-based company Second Sight has become the first retinal prosthesis for treatment of the blind approved for sale in Europe. The approval follows a successful clinical trial that ran for almost four years and saw more than 30 patients around the world using the device at home as they went about their daily lives. While the system isn’t able to restore normal vision, the majority of trial subjects gained the ability to perceive colors, recognize large letters and locate objects, while two were even able to read short sentences. Read More

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