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Retina

Researchers have found that the language that the retina uses to communicate with the brai...

Our eyes extract a lot of information from visible light that enables us to see color, movement, shadows, highlights, shapes, and more, with each component processed separately and sent to the brain in parallel to the others. It was previously thought that the same scene would always be converted into the same pattern of activity. But research by scientists at the University of Tübingen in Germany and the University of Manchester in the UK suggests that the signals differ wildly as the brightness of the environment changes by even small amounts.  Read More

Damaged or defective retinas may someday be replaced by a nanotube film that transforms li...

A promising new study suggests that a wireless, light-sensitive, and flexible nanotube-semiconductor nanocrystal film could potentially form part of a prosthetic device to replace damaged or defective retinas. The film both absorbs light and stimulates neurons without being connected to any wires or external power sources, standing it apart from silicon-based devices used for the same purpose. It has so far been tested only on light-insensitive retinas from embryonic chicks, but the researchers hope to see the pioneering work soon reach real-world human application.  Read More

Apple's latest iMac offers an impressive 5K display and overhauled internals

Apple has taken the wraps off the latest version of its popular desktop machine. The new 27-inch iMac is the company’s top tier all-in-one offering, packing in an impressive 5K display and improved energy efficiency.  Read More

Today Apple upgraded the offerings in its MacBook Pro with Retina display line

Apple today pushed out a refresh of its MacBook Pro with Retina display lineup, giving both the 13- and 15-inch models a little more horsepower under the hood. Additionally, Apple has dropped the price of the top-of-the-line 15-in version of its high-resolution notebook, perhaps making that high-end upgrade a little easier to justify.  Read More

Rod photoreceptors (in green) within a 'mini retina' derived from human iPS cells in the l...

The eye is often compared to a camera, but although its basic design is as simple as an old-fashioned box Brownie, its detailed structure is more complex than the most advanced electronics. This means that, unlike simpler organs, studies of retinal disease rely heavily on animal studies, and treating such illnesses is extremely difficult. One ray of hope in the field comes from researchers at Johns Hopkins, who have constructed a functioning segment of a human retina out of stem cells that is able to respond to light.  Read More

The Mobile Authentication via Retina Scanner (MARS) prototype is compact and portable (Pho...

Retinal scans have a lot going for them as a form of identification. You can’t forget your retinas, they're unique, they’re a lot harder to steal than passwords, and Captain Kirk uses them. The problem is, the technology needed to run a reliable retinal scan is often bulky, expensive, and hard to use. Scientists at the Dresden-based Fraunhofer Institute for Photonic Microsystems (IPMS) have shrunk down retinal scanning technology in the hopes of making retinal scans a more widespread identification technology.  Read More

The second iPad Mini gets its first 'Retina Display'

As expected, Apple unveiled a new iPad Mini with an improved display upgraded to "retina" status, and a complement of new colored covers and cases for both the smaller slate and the new iPad Air.  Read More

We take a look at how Toshiba's KIRAbook and Apple's 13-inch MacBook Pro with Retina displ...

Last week, Toshiba entered the ultra high-end laptop market with the KIRAbook, a thin and light Ultrabook with a number of compelling features. The laptop is the first Windows 8 device to feature a Retina-level display (or PixelPure as Toshiba calls it), throwing it into direct competition with Apple's MacBook Pro with Retina display. We take a look at both devices to see which (if either) comes out on top.  Read More

The basic components of the Argus II Retinal Prosthesis, used in the experiment

Second Sight’s Argus II Retinal Prosthesis is definitely an interesting piece of technology, allowing a blind user to “see” objects, colors and movement in their environment. Ordinarily, this is done with the help of a video-camera-equipped pair of glasses worn by the user. In a recent experiment, however, researchers bypassed the camera, transmitting visual braille patterns directly to a blind test subject’s retina.  Read More

Researchers have reportedly restored near-normal vision to blind mice, using a prosthesis ...

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

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