Described in the journal Nature Photonics, uses a special pair of glasses to beam near infrared light into the eye. This powers the implant and sends the information which could help a patient see. Diseases such as age-related muscular degeneration and retinal pimento's result in the death of cells which can detect light in the eye. Eventually this leads to blindness. Wiring eliminated Retinal implants stimulate the nerves in the back of the eye, which has helped some patients to see. Early results of a trial in the UK mean two men have gone from being totally blind to being able to perceive light and even some shapes. However, as well as a fitting a chip behind the retina, a battery needs to be fitted behind the ear and a cable needs to join the two together. retinal implant - or bionic eye - which is powered by light has been invented by scientists at Stanford University in California.Implants currently used in patients need to be powered by a battery. The new device,
Prof Robert MacLaren from Oxford Eye Hospital explains how a bionic eye implant works The Stanford researchers say their method could be a step forward by "eliminating the need for complex electronics and wiring". A retinal implant, which works in a similar way to a solar panel, is fitted in the back of the eye. A pair of glasses fitted with a video camera records what is happening before a patent's eyes and fires beams of near infrared light on to the retinal chip. This creates an electrical signal which is passed on to nerves. Natural light is 1,000 times too weak to power the implant. The researchers said: "Because the photovoltaic implant is thin and wireless, the surgical procedure is much simpler than in other retinal prosthetic approaches.
"Such a fully integrated wireless implant promises the restoration of useful vision to patients blinded by degenerative retinal diseases." The implant has not been tested in people, but has been shown to work in rats. Dr Keith Mathieson, now at the Institute of Photonics at the University of Strathclyde, was one of the lead researchers on the project. He said: "Age-related muscular degeneration is a huge medical challenge and, with an aging population, is continuing to grow. "This means that innovative, practical solutions are essential if sight is to be restored to people around the world with the condition. "The implant is thin and wireless and so is easier to implant. Since it receives information on the visual scene through an infra-red beam projected through the eye, the device can take advantage of natural eye movements that play a crucial role in visual processing. Technology has always strives to match the incredible sophistication of the human body. Now electronics and hi-tech materials are replacing whole limbs and organs in a merger of machine and man.
Later this year a team of researchers will try out the first bionic eye implant in the UK hoping to help a blind patient see for the first time. It is one of the extraordinary medical breakthroughs in the field, which are extending life by years and providing near-natural movement for those who have lost limbs. Over the coming weeks, BBC News will explore the field of bionics in a series of features. We start with a selection of the latest scientific developments. Later this year the first eye implant in the UK will take place. A light-sensitive chip will hopefully allow the patient to see with their damaged eye, unlike alternative approaches that use a camera fitted to a pair of glasses. The light-sensitive chip is attached under the retina at the back of the eye. It converts light into electrical impulses which are then sent to the brain. The patient is then able to interpret the light falling onto the tiny 1,500 pixel implant as recognisable images. The implant costs about £65,000 ($100,000; 80,000 euros) excluding surgery and maintenance costs. Clinical trials in Germany have restored sight to some patients who were completely blind due to retinal disease. They were able to read and see basic shapes after the chip was fitted. Prof Robert MacLaren, will lead the trial at Oxford Eye Hospital, along with Tim Jackson at King's College Hospital.
Prof Robert MacLaren from Oxford Eye Hospital explains how a bionic eye implant works The Stanford researchers say their method could be a step forward by "eliminating the need for complex electronics and wiring". A retinal implant, which works in a similar way to a solar panel, is fitted in the back of the eye. A pair of glasses fitted with a video camera records what is happening before a patent's eyes and fires beams of near infrared light on to the retinal chip. This creates an electrical signal which is passed on to nerves. Natural light is 1,000 times too weak to power the implant. The researchers said: "Because the photovoltaic implant is thin and wireless, the surgical procedure is much simpler than in other retinal prosthetic approaches.
"Such a fully integrated wireless implant promises the restoration of useful vision to patients blinded by degenerative retinal diseases." The implant has not been tested in people, but has been shown to work in rats. Dr Keith Mathieson, now at the Institute of Photonics at the University of Strathclyde, was one of the lead researchers on the project. He said: "Age-related muscular degeneration is a huge medical challenge and, with an aging population, is continuing to grow. "This means that innovative, practical solutions are essential if sight is to be restored to people around the world with the condition. "The implant is thin and wireless and so is easier to implant. Since it receives information on the visual scene through an infra-red beam projected through the eye, the device can take advantage of natural eye movements that play a crucial role in visual processing. Technology has always strives to match the incredible sophistication of the human body. Now electronics and hi-tech materials are replacing whole limbs and organs in a merger of machine and man.
Later this year a team of researchers will try out the first bionic eye implant in the UK hoping to help a blind patient see for the first time. It is one of the extraordinary medical breakthroughs in the field, which are extending life by years and providing near-natural movement for those who have lost limbs. Over the coming weeks, BBC News will explore the field of bionics in a series of features. We start with a selection of the latest scientific developments. Later this year the first eye implant in the UK will take place. A light-sensitive chip will hopefully allow the patient to see with their damaged eye, unlike alternative approaches that use a camera fitted to a pair of glasses. The light-sensitive chip is attached under the retina at the back of the eye. It converts light into electrical impulses which are then sent to the brain. The patient is then able to interpret the light falling onto the tiny 1,500 pixel implant as recognisable images. The implant costs about £65,000 ($100,000; 80,000 euros) excluding surgery and maintenance costs. Clinical trials in Germany have restored sight to some patients who were completely blind due to retinal disease. They were able to read and see basic shapes after the chip was fitted. Prof Robert MacLaren, will lead the trial at Oxford Eye Hospital, along with Tim Jackson at King's College Hospital.
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