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Stereoblindness (also stereo blindness) is the inability to see in 3D using stereo vision, resulting in an inability to perceive stereoscopic depth by combining and comparing images from the two eyes. Individuals with only one functioning eye always have this condition; the condition also results when two eyes do not function together properly. Stereoblind persons with two healthy eyes do employ binocular vision to some extent, albeit less than persons with normally developed eyesight. This was shown in a study in which stereoblind subjects were posed with the task of judging the direction of rotation of a simulated transparent cylinder: the subjects performed better when using two eyes than when using their preferred eye. They appeared to judge the direction of rotation from the images in each eye separately and then to combine these judgments, rather than relying on differences between the images in the two eyes. Also, purely binocular motion stimuli appear to influence stereoblind persons' sensation of self-motion. Furthermore, in some cases each eye can contribute to peripheral vision for one side of the field of view (see also monofixation syndrome). ==Notable cases== It has been suggested that Dutch Old Master Rembrandt may have been stereoblind, which would have aided him in flattening what he saw for the production of 2D works.〔Marmor M. F., Shaikh S., Livingstone M. S., Conway B. R., 〕〔(Rembrandt (van Rijn) )〕 Scientists have suggested that more artists seem to have stereoblindness when compared with a sample of people with stereo-acuteness (normal stereo vision).〔(New York Times: A defect that may lead to a masterpiece ) (June 13, 2011)〕 British neurologist Oliver Sacks lost his stereoscopic vision in 2009 due to a malignant tumor in his right eye and had no remaining vision in that eye.〔("The Man Who Forgot How to Read and Other Stories" ), BBC accessed 30 June 2011〕 His loss of stereo vision was recounted in his book ''The Mind's Eye'', published in October 2010.〔Murphy, John. ("Eye to Eye with Dr. Oliver Sacks" ), Review of Optometry, 9 December 2010〕 In 2012 one case of stereoblindness was reportedly cured by watching a 3D film. __NOTOC__ 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Stereoblindness」の詳細全文を読む スポンサード リンク
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