منابع مشابه
Color-Vision and Color-Blindness
Special public attention was called to the subject in 1875 by an enquiry into the causes of a railway accident which had taken place in Sweden, from which it appears that colourblindness was the cause of the disaster. Our author having described colour-sensations, goes on to discuss the theories of colour-perception and colour-blindness, classifying the latter defect as total and partial. Total...
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Achromatopsia is a rare congenital cause of vision loss due to isolated cone photoreceptor dysfunction. The most common underlying genetic mutations are autosomal recessive changes in CNGA3, CNGB3, GNAT2, PDE6H, PDE6C, or ATF6. Animal models of Cnga3, Cngb3, and Gnat2 have been rescued using AAV gene therapy; showing partial restoration of cone electrophysiology and integration of this new phot...
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Cortical color blindness, or cerebral achromatopsia, has been likened by some authors to "blindsight" for color or an instance of "covert" processing of color. Recently, it has been shown that, although such patients are unable to identify or discriminate hue differences, they nevertheless show a striking ability to process wavelength differences, which can result in preserved sensitivity to ch...
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Red-green color blindness, “Daltonism,” is the most common single locus genetic disorder, affecting 6% of men worldwide. Gene therapy is a potential means of correcting the defective or missing locus through the injection/transplantation of a normal transgene. Through the evaluation of one case study, gene therapy has cured colorblindness in squirrel monkeys, and may provide promise for humans.
متن کاملColor blindness and its illuminations
In 1974, not long after an antenna was implanted in his skull, the British artist Neil Harbisson became the first person in history to be officially recognized as a cyborg.1 A cyborg—short for cybernetic organism—is a living thing formed from the integration of organic and mechanical parts. Before becoming a cyborg, Harbisson struggled as an art student afflicted with achromatopsia, an extremel...
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ژورنال
عنوان ژورنال: School Science and Mathematics
سال: 1920
ISSN: 0036-6803
DOI: 10.1111/j.1949-8594.1920.tb10371.x