Release date: 2014-02-12
Recently, Professor Zeev Zalevsky of the University of Baylan School of Engineering in Israel developed a new contact lens to help blind people read electronic Braille.
This device looks like a normal contact lens with electrodes on it that captures the signal from the camera. The camera can be either hand-held or worn on the glasses.
When the wearer looks at the object with the camera, the camera translates the image into electronic Braille, which then stimulates the graphic receiving cells on the retina.
Professor Zeev Zalevsky: "It's like reading Braille, but we're using glasses instead of fingers. We can encode images with much more points than the Braille system. These codes are used to stimulate the corneal surface."
Unlike the Braille system, which uses six point positions to convey information to the reader, the detector on the cornea is six hundred times more sensitive to contact stimuli than the finger.
The professor also said that the cornea is the most sensitive area of ​​the human body for contact stimulation. In animal testing, animals wearing glasses can find their way in the dark, but further human trial verification is needed.
The professor said: "Our solution enables the blind readers to read letters and help them locate in a three-dimensional environment. This means that blind people can avoid vehicles while crossing the road. But what is even more exciting is that we can pass information to the retina. Now only 16 pixels of image information can be delivered, but the new device will provide tens of thousands of pixels of information."
The researchers told the interviewers that only preliminary human clinical trials have been conducted and that the glasses can only transmit basic spatial patterns. Wearing the ability to recognize these graphics after a few minutes of contact. The more graphics you want to identify, the longer you will not have to train. This is similar to training blind people to identify Braille.
Professor Zalevsky also hopes to develop similar devices to help hearing-impaired people.
Source: Kexun Medical Network
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