26-11-2010, 11:45 AM
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Presented by:R. Angeline Prabha & J.Lavina Mary
FINAL ECE
JACSI COLLEGE OF ENGG.
NAZARETH
INTRODUCTION
Artificial vision researchers take inspiration by cochlear implant, which restored hearing to deaf people.
The EYE is the most important organ of human body,but vision system is complicated.
Role of RETINA
Scattered light from the object enters through the CORNEA.
The light is projected onto the RETINA.
The retina sends messages to the brain through the OPTIC NERVE.
The BRAIN interprets what the object is.
HOW TO CREATE ARTIFICIAL VISION?
It could be achieved by stimulating the nerve GANGLIA behind the retina with an electrical current.
This helps to function the nerves behind the retina even the retina had degenerated.
For this we have to create a device that translates the images and electrical pulses that could restore the vision.
Concept for MICROCHIP
Small enough to be implanted
in the eye.
Supplied with a continuous
source of power.
Biocompatible with the
surrounding eye tissue.
How ASR does works?
ASR contains microscopic solar cells which convert light into electric pulses.
To implant this three tiny incisions are made in the part of the eye.
The most interesting thing in the ASR is that it takes the power needed from the light entering the eye.
The currently developing device is artificial retina component chip(ARCC).
Operations
The main parts are
Signal processor
Miniature video camera
Brain implants
Pinhole camera captures the scene & sends to a small computer.
Processor translates the image into series of signals that the brain can understand.
Brain implants recognize the image
What blind patients would not be able to use this device?
We believe the device will be applicable to virtually all patients who are blind or who have very low vision.
The only ones contraindicated would be a few blinded by serious brain damage, or who have chronic infections, etc. that preclude surgical implants.
Patients who have a small amount of vision are not contraindicated.
Visual cortex stimulation seems to work the same in both sighted and blind patients.
Advancement
Transudation
Sub-Retinal Prosthesis
Cortical prosthesis
Bio Hybrid Implant
Bottlenecks :
COST:The rate is higher depending upon the context and severity.
It may not work for people blinded as children or as infants.
It does not work as well as the real eye and does not have crystal-clear vision.
CONCLUSION
The electronic eye is the latest in high-tech gadgets aimed at helping millions of blind and visually impaired people. This helps the challenged people to walk safely and read large letters. In recent years, progress is being made towards sensory distribution devices for the blind.
Presented by:R. Angeline Prabha & J.Lavina Mary
FINAL ECE
JACSI COLLEGE OF ENGG.
NAZARETH
ARTIFICIAL VISION
(Towards Creating the Joys of Seeing for the BLIND)
(Towards Creating the Joys of Seeing for the BLIND)
INTRODUCTION
Artificial vision researchers take inspiration by cochlear implant, which restored hearing to deaf people.
The EYE is the most important organ of human body,but vision system is complicated.
Role of RETINA
Scattered light from the object enters through the CORNEA.
The light is projected onto the RETINA.
The retina sends messages to the brain through the OPTIC NERVE.
The BRAIN interprets what the object is.
HOW TO CREATE ARTIFICIAL VISION?
It could be achieved by stimulating the nerve GANGLIA behind the retina with an electrical current.
This helps to function the nerves behind the retina even the retina had degenerated.
For this we have to create a device that translates the images and electrical pulses that could restore the vision.
Concept for MICROCHIP
Small enough to be implanted
in the eye.
Supplied with a continuous
source of power.
Biocompatible with the
surrounding eye tissue.
How ASR does works?
ASR contains microscopic solar cells which convert light into electric pulses.
To implant this three tiny incisions are made in the part of the eye.
The most interesting thing in the ASR is that it takes the power needed from the light entering the eye.
The currently developing device is artificial retina component chip(ARCC).
Operations
The main parts are
Signal processor
Miniature video camera
Brain implants
Pinhole camera captures the scene & sends to a small computer.
Processor translates the image into series of signals that the brain can understand.
Brain implants recognize the image
What blind patients would not be able to use this device?
We believe the device will be applicable to virtually all patients who are blind or who have very low vision.
The only ones contraindicated would be a few blinded by serious brain damage, or who have chronic infections, etc. that preclude surgical implants.
Patients who have a small amount of vision are not contraindicated.
Visual cortex stimulation seems to work the same in both sighted and blind patients.
Advancement
Transudation
Sub-Retinal Prosthesis
Cortical prosthesis
Bio Hybrid Implant
Bottlenecks :
COST:The rate is higher depending upon the context and severity.
It may not work for people blinded as children or as infants.
It does not work as well as the real eye and does not have crystal-clear vision.
CONCLUSION
The electronic eye is the latest in high-tech gadgets aimed at helping millions of blind and visually impaired people. This helps the challenged people to walk safely and read large letters. In recent years, progress is being made towards sensory distribution devices for the blind.
