Assistive technology for sensory impairments

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  • VI may be congenital (present at birth) or adventitious (acquired after birth due to accident or illness)
  • Because these individuals have some usable vision, size is of great importance. Various screen enlargement packages offer a variety of features. The most popular features enlarge the display from two to sixteen times the normal view and invert screen colors for those who are sensitive to the usual display of white text on a black background. Some enlargers also incorporate speech output to reduce the strain associated with reading large blocks of text.
  • Refreshable Braille displays are devices that echo information from the screen to a panel with Braille cells. Within the cells are pins that move up or down based on the text transmitted.
  • iCommunicator by Interactive Solutions, which converts speech to text, speech to sign language, speech to computer-generated voice, or text to computer-generated voice.
  • Assistive technology for sensory impairments

    1. 1. Assistive Technology forSensory Impairments By: Arifa V. Ryan-Charles October16, 2012
    2. 2. Did you know?•Globally, about 285 million ppl were visuallyimpaired (39 million are blind).•120 million ppl are visually impaired because ofuncorrected refractive errors.•90% of VI ppl live in developing countries.•Around 19 million children are VI (1.4 million will beblind for life)•80% of all visual impairment can be avoided orcured. (WHO: Fact Sheet N 282, June 2012)
    3. 3. What are Sensory Impairments? Sensory impairments refer to the reduced ability or lack of ability in using one or more of three senses: vision, touch, and hearing. Includes blindness, deafness, deaf-blindness etc. www.uw.edu/doit/Video/wt_sensory.html
    4. 4. Visual ImpairmentsVisual impairments are conditions inwhich individuals experiencesignificant loss of vision.Visual impairments consist of two (2)main categories: 1. Low vision 2. Blindness
    5. 5. Visual ImpairmentsLow Vision: This is a condition in which anindividual’s vision cannot be fully correctedby glasses. (http://www.webaim.org)Blindness: This often refers to a completelack of vision. People who are legally blindmay have some useful vision.
    6. 6. Hearing Impairments• Hearing impairments include partial or complete hearing loss.• The Hard of hearing have a mild hearing loss.• People who are deaf have no useful hearing ability.
    7. 7. Tactile Impairments• Nerve damage associated with diabetes may result in peripheral neuropathy.• This condition is manifested in numbness or a lack of sensitivity in limbs, including fingertips.
    8. 8. Assistive technology for low vision1. Screen Magnifiers/Enlargement• Screen magnification - software that focuses on a single portion (1/4, 1/9, 1/16, etc.) of the screen and enlarges it to fill the screen.• Software that zoom in a small area of the computer screen to allow people to see it more clearly.
    9. 9. Examples of Screen Magnifiers• ZoomText Magnifer/Readerhttp://www.youtube.com/watch?v=htJ5jZnk6ZQ• MAGic Screen Magnification Software• iZoom Screen Magnifer/Reader• SuperNova Reader Magnifier• Claro Lightning Magnifier & Reader
    10. 10. Print Magnification Systems• Merlin elite• DaVinci• Closed circuit Televisions (CCTVs)http://www.youtube.com/watch?v=bSIaWtsFNsE&feature=related• Nemo Portable Digital Magnifier• Senseview Duo• Pebble Portable Digital Magnifierhttp://www.youtube.com/watch?v=cWO0TSZUSdQ&feature=rel
    11. 11. Input Devices for Low Vision• Large keys keyboard http://www.google.ca/search?q=large+keys+keyboard&hl=en&prmd=imvn• Home row indicators.http://www.youtube.com/watch?v=CKv2YpCuDFs
    12. 12. Assistive Technology for Blindness• Screen Readers: (HAL and SuperNova, JAWS, Window-Eyes & VoiceOver).• Refresherable braille Displays.• Braille Embossers• BrailleWriter/Slate & Stylus ( http://www.youtube.com/watch?v=6rM7Tam-hrA)• Tactile Image Enhancer http://www.youtube.com/watch?v=a8tTFVMTf7o
    13. 13. Assistive Technology for the Hearing Impaired• Hearing Aids• Cochelar Implants• Captioning• Automatic Speech Recognition (ASR)The speaker wears a headset microphone that is connected to a computer, the ASR program “recognizes”his/her voice and translates the spoken message into text that is displayed on a monitor. Eg: Dragon Naturally Speaking, Via Voice, icommunicator.http://www.youtube.com/watch?v=DmDVEvJYQV4http://www.youtube.com/watch? v=U0bjx01GEAM&NR=1&feature=endscreen
    14. 14. Assistive Technology for the Hearing Impaired• http://www.youtube.com/watch? v=424C3Ix1H1o&feature=related• Visual Alert SignalersAlarm Clock With Flasher: A light flashes when the alarm goes offShake Awake Travel Alarm Clock: Placed under pillow, this vibrates and/or sounds to wake you up.Door Beacon: When someone knocks at the door, the beacon flashes.• Infrared Systems• Conference Mate
    15. 15. Assistive technology for Tactile Impairments • Speech input software (Dragon Naturally Speaking, VoiceXpress) http://www.humanware.com/en-canada/home
    16. 16. Just Imagine• http://www.youtube.com/watch? v=nCKAJ_H0rPw

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