EDCI 2700 Lecture : 11 21 Notes
Document Summary
Causes of visual impairments: fetal development and organic damage, damage to structure of eye, damage to eye muscles, damage to optic nerves, damage to visual center of the brain. Prevalence and causes: fewer than 2 children in 1000 have visual impairments, almost half of school age children with visual impairments also have another disability, causes of visual impairments, refractive errors: myopia [nearsightedness] and hyperopia. [farsightedness: structural impairments: cataracts, glaucoma, nystagmus, strabismus, cortical visual impairments: suspected damage to parts of brain that interpret visual information, retinitis pigmentosa, macular degeneration. Orientation and mobility training [o&m: cane skills, guide dogs, sighted guides, electronic travel aids. Functional life skills: cooking, personal hygiene, shopping, financial management, transportation, recreational activities. Increase visibility of materials bold lined paper, special lighting, Magnification lense, projection microscopes, closed-d circuit television, scanners, and equipment to convert print to tactile formats] Medical perspective: continuum of hearing loss from mild to profound.
