Ch. 15-Visual Impairment

Ch. 15-Visual Impairment - Blindness and Visual...

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Blindness and Visual Impairments: The Basics Cynthia Bachofer and Tessa Wright Carlsen
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Chapter 15 Objectives: At the end of this chapter you should be able to: Define and identify the characteristics of students with visual impairments Recall the major causes of visual impairments Explain the assessment and evaluation practices for students with visual impairments Identify the major issues impacting students with visual impairments Describe successful instructional practices and accommodations for students with visual impairments
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Understanding the Visual Functioning of Students with Visual Impairments Total Blindness (tactile and auditory senses are key to interaction in the environment) Functional blindness (typically use Braille for reading and writing, use limited vision to learn with tactile and auditory learning) Legal Blindness Low Vision (generally able to read but may depend on optical aides, rely primarily on vision for learning)
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Definition of legal blindness Students who have distance visual acuity of 20/200 or less in the better eye after best correction or Visual field restriction is 20 degrees or less Often used as criterion for determining eligibility for benefits or services in U.S.
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Definition of students with low vision Students who have difficulty accomplishing visual tasks, even with prescribed corrective lenses, but can enhance their ability to accomplish these tasks with the use of compensatory visual strategies, low vision and other devices and environmental modification. (Corn and Koenig, 1996)
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What are common causes of blindness and visual impairments? Congenital vision impairments
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This note was uploaded on 03/01/2011 for the course SPE 222 taught by Professor Bal during the Spring '08 term at ASU.

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Ch. 15-Visual Impairment - Blindness and Visual...

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