02-06-2012, 11:52 AM
AN ARTIFICIALLY POWERED EYE FOR BLINDS USING BIONIC EYE
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INTRODUCTION
The purpose of the report is to provide an accurate and detailed
description of the Bionic eye (Optoelectronic Retinal Prosthesis System) and its function. The new technology tested by Mrs.Moorfoot uses an
external camera worn on a pair of dark glasses that sends images to a
radio receiver implanted near the eye that transmits the signal on to a tiny silicon and platinum chip that sits on the retina. This information then goes down the optic nerve into the brain. The team lead by Dr.Mark Humayun, professor of ophthalmology and Biomedical engineering at the Doheny eye institute in Los Angeles, California have now developed a small and powerful camera that could be implanted inside the patient’s eye, rather than worn on a pair of glasses. “The camera is very, very small and very low power, so it can go inside your eye and couple your eye movement to where the camera is,” said Dr Humayun.
NEED FOR THE BIONIC EYE
It has been shown that electric stimulation of retinal neurons can produce perception of light in patients suffering from retinal de-generation. Using this property the eye and make uses of the functional cells to retain the vision with the help of electronic devices that assist these cells in performing the task of vision, we can make these lakhs of people get back their vision at least partially. A design of an op-toelectronic retinal prosthesis system that can stimulate the retina with resolution corresponding to a visual acuity of 20/80—sharp enough to orient yourself toward objects, recognize faces, read large fonts, watch TV and, perhaps most important, lead an independent life.
THE HUMAN EYE
We are able to see because light from an object can move through space and reach our eyes. Once light reaches our eyes, signals are sent to our brain, and our brain deciphers the information in order to detect the appearance, location and movement of the objects we are sighting at.
What are Rod cells and Cone cells?
Rod cells pick up movement out of the corner of the eye and also, in a normal eye it is the rods that operate in poor light or at night. There are about 120 million rods in each eye and they are more numerous towards the outer edge of the retina. The cone cells are used in colour vision and in close precision work like reading. There are not as many cones and they are more concentrated in the centre of the retina.
BIONIC EYE
A group of American scientists have given a visually impaired grandmother a chance to see her grandchildren dance and play football with a “Bionic eye”. Linda Moorfoot, who suffers from the eye condition Retinitis Pigmentosa that causes blindness, is thrilled after having part of her sight restored by a Bionic eye.
[attachment=23959]
INTRODUCTION
The purpose of the report is to provide an accurate and detailed
description of the Bionic eye (Optoelectronic Retinal Prosthesis System) and its function. The new technology tested by Mrs.Moorfoot uses an
external camera worn on a pair of dark glasses that sends images to a
radio receiver implanted near the eye that transmits the signal on to a tiny silicon and platinum chip that sits on the retina. This information then goes down the optic nerve into the brain. The team lead by Dr.Mark Humayun, professor of ophthalmology and Biomedical engineering at the Doheny eye institute in Los Angeles, California have now developed a small and powerful camera that could be implanted inside the patient’s eye, rather than worn on a pair of glasses. “The camera is very, very small and very low power, so it can go inside your eye and couple your eye movement to where the camera is,” said Dr Humayun.
NEED FOR THE BIONIC EYE
It has been shown that electric stimulation of retinal neurons can produce perception of light in patients suffering from retinal de-generation. Using this property the eye and make uses of the functional cells to retain the vision with the help of electronic devices that assist these cells in performing the task of vision, we can make these lakhs of people get back their vision at least partially. A design of an op-toelectronic retinal prosthesis system that can stimulate the retina with resolution corresponding to a visual acuity of 20/80—sharp enough to orient yourself toward objects, recognize faces, read large fonts, watch TV and, perhaps most important, lead an independent life.
THE HUMAN EYE
We are able to see because light from an object can move through space and reach our eyes. Once light reaches our eyes, signals are sent to our brain, and our brain deciphers the information in order to detect the appearance, location and movement of the objects we are sighting at.
What are Rod cells and Cone cells?
Rod cells pick up movement out of the corner of the eye and also, in a normal eye it is the rods that operate in poor light or at night. There are about 120 million rods in each eye and they are more numerous towards the outer edge of the retina. The cone cells are used in colour vision and in close precision work like reading. There are not as many cones and they are more concentrated in the centre of the retina.
BIONIC EYE
A group of American scientists have given a visually impaired grandmother a chance to see her grandchildren dance and play football with a “Bionic eye”. Linda Moorfoot, who suffers from the eye condition Retinitis Pigmentosa that causes blindness, is thrilled after having part of her sight restored by a Bionic eye.