It is the most common type of vision problems that occur when the eye’s shape prevents light from focusing directly on the retina, resulting in blurry vision. The three common types of refractive errors are astigmatism, hyperopia, and myopia.
Published in Chapter:
Assistive Technology for Blindness and Visual Impairments: Supporting Teachers in K-12 Classrooms
Copyright: © 2023
|Pages: 30
DOI: 10.4018/978-1-6684-6424-3.ch004
Abstract
This chapter will provide K-12 educators in regular and special education programs with an overview of the various assistive technology (AT) devices and services that can be used for students who are blind or have visual impairments. This chapter will include introductory information about blindness and visual impairments, including the causes, characteristics, types, prevalence, identification, assessment, and educational placement alternatives. The authors will introduce the student, environment, task, and tools (SETT) framework to identify a struggling student's learning needs and match those needs with the most appropriate assistive technology options. The chapter will cover the implementation of specific low-tech to high-tech AT devices, such as covered overlays, magnifying aids, vibrating pocket watches, large print backlit keyboards, electronic magnifiers, braille display devices, special optic glasses, and voice typing applications. Finally, this chapter will provide support organizations and resources for K-12 educators teaching in inclusive educational environments.