Characteristics and Assessment of Visual Function for Children with Severe and Multiple Disability : Analysis from the relation with Brain Function

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The purpose of this study was to verify the characteristics and assessment of visual function for children with severe and multiple disability from the relevance with brain function. The results of this study were summarized as follows :(1)Type of visual field detect was different between disease of eyeball and disease of optic pathway. It was difficult for children with disease of optic pathway to use vision more than children with disease of eyeball.(2)Assessment of binocular vision was difficult for all of the children.(3)It was difficult for children with parietal lobe damage to regard, following eye movement, scanning more than potentiality of visual acuity and visual field.(4)OKN(optokinetic nystagums) was effective assessment method of visual function for all children.(5)Teller Acuity Cards was not effective assessment method of visual function for children with intellectual disability, but not effective for children with severe and multiple disability.In conclusion, it was important to develop and choice the assessment method corresponding to the characteristics of visual function and disease.