منابع مشابه
Vision after 53 years of blindness
Several studies have shown that visual recovery after blindness that occurs early in life is never complete. The current study investigated whether an extremely long period of blindness might also cause a permanent impairment of visual performance, even in a case of adult-onset blindness. We examined KP, a 71-year-old man who underwent a successful sight-restoring operation after 53 years of bl...
متن کاملLow vision and blindness.
A single-topic issue of the Journal of Rehabilitation Research and Development provides a unique opportunity to present new information and to interest new research professionals in meeting the challenges faced by persons with a visual disability. That a single-topic issue of a VA journal is devoted to the area of low vision and blindness is appropriate. The Department of Veterans Affairs (VA) ...
متن کاملRepresenting vision and blindness
BACKGROUND There have been relatively few attempts to represent vision or blindness ontologically. This is unsurprising as the related phenomena of sight and blindness are difficult to represent ontologically for a variety of reasons. Blindness has escaped ontological capture at least in part because: blindness or the employment of the term 'blindness' seems to vary from context to context, bli...
متن کاملPrevalence and Causes of Blindness Before and Five Years After 'VISION 2020' Initiatives in Oman: A Review
Background: A prevalence survey of blindness and low vision was conducted in Oman in 2005. Here, we present the prevalence and determinants of blindness and low vision among the population ≥40 years of age. The results are then compared with those of the survey in 1997 and the changes following the ‘VISION 2020’ initiatives are assessed. Methods: The survey covered 24 randomly selected clusters...
متن کاملColor-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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ژورنال
عنوان ژورنال: i-Perception
سال: 2013
ISSN: 2041-6695,2041-6695
DOI: 10.1068/i0611