Chapter 10 - Chapter 10: Guided Review I. Definitions A....

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Chapter 10: Guided Review I. Definitions A. Legal Definition of Blindness The legal definition is based on visual acuity and field of vision A person whose visual acuity is 20/200 or less after the best possible correction with glasses or contact lenses is considered legally blind A person whose vision is restricted to an area of 20 degrees or less is considered legally blind. B. Educational Definitions of Visual Impairments The IDEA definition emphasizes the relationship between vision and learning totally blind: receives no useful information through the sense of vision and must use tactile and auditory sense for all learning functionally blind: has so little vision that she learns primarily through the auditory and tactile senses low vision: uses vision as a primary means of learning but may supplement visual information with tactile and auditory input C. Age of Onset Visual impairment can be congenital (present at birth) or adventitious (acquired). The age of onset has implications for how children with low vision should be taught. II. Characteristics of Students with Visual Impairments A. Cognition and Language Impaired or absent vision makes it difficult to see the connections between experiences. B. Motor Development and Mobility Visual impairment often leads to delays and deficits in motor development. C. Social Adjustment and Interaction Children with visual impairments interact less and are often delayed in the development of social skills Some individuals with visual impairments engage in repetitive body movements or other behavior. Many persons who have lost their sight report that the biggest difficulty socially is dealing with the attitudes and behavior of those around them III. Prevalence Fewer than 2 children in 1000 have visual impairments. Almost half of school age children with visual impairments have at least one additional disability IV. Types and Causes of Visual Impairment A. How We See Effective vision requires proper functioning of three anatomical systems:
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This note was uploaded on 04/27/2008 for the course EDU 105 taught by Professor Reith during the Spring '08 term at Lehigh Carbon CC.

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Chapter 10 - Chapter 10: Guided Review I. Definitions A....

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