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Artificial Vision

Quality Of Artificial Vision

Resolution of the artificial systems is an important consideration in their design and usefulness. A pixel resolution of 5x5, such as with the ARCC, allows reading of some individual letters; a 10x10 pixel vision (ASR) can allow further distinction of form, but a pixel resolution of 32x32 is usually necessary to allow a person freedom of movement. Better resolutions of 64x64 pixels and up to 250x250 pixels are considered to be a matter of time. Resolution of the cortical implants is measured mostly in vision acuity because their aim is not only freedom of movement, but also ability to read.

See also Biotechnology; Blindness and visual impairments; Nanotechnology; Prosthetics.


Resources

Periodicals

Dobelle, W.H., "Artificial Vision for the Blind by Connecting a Television Camera to the Visual Cortex." ASAIO Journal (January 2000):3–9.

Margalit, Eyal, Maia, Mauricio, Weiland, James D., et al., "Retinal Prosthesis for the Blind." Surv. Ophthalmol. (July-August 2002):335–56

Meijer, Peter B.L. "An Experimental System for Auditory Image Representation." IEEE Transactions on Biomedical Engineering (February 1992):112–121

Organizations

The Dobelle Institute, Inc, 61 Mall Drive, Commack, NY. 631–864–1600. [cited January 12, 2003]. <http://www.artificialvision.com/index.html>.

Other

Brown University. "Artificial Vision" [cited January 14, 2003]. <http://biomed.brown.edu/Courses/BI108/BI108_1999_Groups/Vision_Team/Vision.htm>.

How Stuff Works. Kevin Bonsor. "How Artificial Vision Will Work" [cited January 14, 2003]. <http://www.howstuff works.com/artificial-vision.htm>.

Vision Technology for the Totally Blind. February 15, 1996 [cited January 14, 2003]. <http://www.seeingwithsound.com.voice.html>.


Agnieszka Lichanska

KEY TERMS

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Phosphenes

—Visual sensations or impressions resulting from a mechanical pressure on an eyeball or excitation of the retina by stimulus other than light.

Retina

—An extremely light-sensitive layer of cells at the back part of the eyeball. The image formed by the lens on the retina is carried to the brain by the optic nerve.

Visual acuity

—Keenness of sight and the ability to focus sharply on small objects.

Visual cortex

—Area of the brain (occipital lobe) concerned with vision.

Additional topics

Science EncyclopediaScience & Philosophy: Anticolonialism in Southeast Asia - Categories And Features Of Anticolonialism to Ascorbic acidArtificial Vision - Cortical Implants, Retinal Implants, Quality Of Artificial Vision