Types of Disabilities Flashcards
Define Blindness
Sightlessness or loss of vision. May refer to partial blindness
Causes of Blindess
Diabetes Macular Degeneration Glaucoma Accidents or traumatic injury Stroke Retinis Pigmentosa
What is the Legal Definition of Blindness used for?
To determine eligibility in programs
What is the Legal Definition of Blindness in the U.S.?
A person with a visual acuity of 20/200 with corrective lenses or has a field of vision 20 degrees in the eye with better vision
How do screen readers work for visually impaired?
Convert text into spoken words
How can visually impaired people be supported with digital or electronic interfaces?
A Screen readers B Self-voicing interfaces C Refreshable braille D None of the Above E All of the Above
E All of the Above
Screen readers
Self-voicing interfaces
Refreshable braille
How can visually impaired people be supported with screen content when screen readers were not optimized?
A They cannot be. Without optimization content is not accessible
B Ensure markup is compatible with assistive tech
C Rely on external assistive technology
B Ensure markup is compatible with assistive tech
How can visually impaired people be supported with walking?
Canes
Service animals
GPS instructions
Raised tiles on ground to indicate edges / danger
Eliminate low-hanging architectural features that may be an obstacle
Clear pathways
How can visually impaired people be supported with signs on buildings that they may not see?
Map and geolocation support on phone
Braille labels and descriptions
Tactile models
How can visually impaired people be supported with controls on flat devices such as microwaves?
Alternative interfaces
Audio interfaces
Remote control through mobile applications
How can visually impaired people be supported with the inability to read money to determine its value
Applications to photograph money and read value
Different size and shapes for different values
Non-cash payment options
How can visually impaired people be supported with reading books and printed materials
OCR
Online content that is accessible through assistive technology
Define Low Vision
Can see, but far from perfect even with corrective lenses. Broad category of conditions and impairments
How does Screen Magnification impact those with Low Vision?
Zoom Text or MAGic tools allow magnifying parts of the screen
How do Screen Readers impact those with Low Vision?
Often thought of for blind, but support low vision too, making visuals easier to understand
How does Color Customization impact those with Low Vision?
Some contrast ratios are difficult to distinguish and color alone should not be used to communicate information.
Define Color Blindness
Refers to inability to distinguish between certain kinds of colors
What are the most prevalent form of color blindness?
Red-Green color blindness
Define Deuteranopia and Protanopia
Two common sub types of red-green color blindness
Define Tritanopia
Blue-yellow color blindness
Define Achromatopsia
Insensitivity to all colors, seeing in grayscale
Define Deafblindness
If a person is both deaf and blind
Define Auditory Disabilities
Involve hearing impairment, hearing loss, and deafness
Define Central Auditory Processing Disorder (ADP)
Results in difficulty processing sounds or speech. No measurable hearing loss but difficulty interpreting, organizing, or analyzing what is heard.
May be confused with ADHD, learning disabilities, emotional delays
Distinguish between Deafness and Deaf Culture
deaf, lowercase d, is the condition of deafness
Deaf, capital D, refers to Deaf Culture, or the community
How can Web Accessibility support deafness?
Provide synchronize video captions plus a transcript on video