Visual prosthesis
Visual Prosthesis
Visual prosthesis, also known as a bionic eye, is a form of artificial vision device. It is intended to restore functional vision in those suffering from partial or total blindness.
Pronunciation
- Visual: /ˈvɪʒʊəl/
- Prosthesis: /prɒsˈθiːsɪs/
Etymology
The term "visual prosthesis" is derived from the Latin word "visus" meaning sight, and the Greek word "prosthesis" meaning an addition.
Related Terms
- Artificial vision: A means of restoring sight through the use of a device that sends signals to the brain.
- Bionic eye: Another term for visual prosthesis.
- Retinal implant: A type of visual prosthesis that works by implanting a device in the eye.
- Optic nerve: The nerve that transmits visual information from the retina to the brain.
- Blindness: The state or condition of being unable to see.
Description
A visual prosthesis is a medical device that replaces or augments the function of the retina to provide a sense of sight to the patient. The device works by converting images into electrical signals that can be interpreted by the brain. There are different types of visual prostheses, including retinal, optic nerve, and cortical implants. The type of prosthesis used depends on the cause of the patient's blindness and the specific part of the visual system that is still functional.
History
The concept of a visual prosthesis dates back to the 18th century, but it wasn't until the late 20th century that significant progress was made in the field. The first successful implantation of a visual prosthesis in a human was performed in the 1990s.
Current Research
Current research in the field of visual prostheses is focused on improving the quality of the artificial vision provided by these devices. This includes efforts to increase the resolution of the images produced and to create devices that can provide a sense of color vision.
External links
- Medical encyclopedia article on Visual prosthesis
- Wikipedia's article - Visual prosthesis
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