Visual impairment

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technology that aids visually impairment

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Visual impairment

  1. 1. MEETING THE NEEDS OF VISUALIMPAIRMENT
  2. 2. VISUAL IMPAIRMENT DEFINITION : IS A DISABILITY WHICH AFFECTS VISION OR SIGHT. The eye is the organ of sight and therefore visual impairment affects the eye to a lesser or greater degree. This workshop is to sensitized as to how technology has created adaptive devices to assist the visually impaired.
  3. 3. MANY PEOPLE HAVE SOME TYPE OF VISUAL PROBLEM AT SOME POINT IN THEIR LIVES Some can no longer see objects far away. Others have problems reading small print. These types of conditions are often easily treated with eyeglasses or contact lenses. But when one or more parts of the eye or brain that are needed to process images become diseased or damaged, severe or total loss of vision can occur. In these cases, vision cant be fully restored with medical treatment, surgery, or corrective lenses like glasses or contacts.
  4. 4. MODERN TECHNOLOGIES USED TO AID THE VISUALLY IMPAIRED Some of these are: Screen reading and talking browsers Voice recognition software CCTV – close circuit television Braille keyboard and printer Smart Cane OCR- optical character recognition. Screen magnifiers
  5. 5. SCREEN READING AND TALKING BROWSERS Software used to convert text on the computer screen into speech words. Used by the totally blind and others who have trouble reading magnified text.
  6. 6. VOICE RECOGNITION SOFTWAREThis allows a user to useone voice as an inputdevice. Voice recognitionmay be used to dictate textinto the computer or togive commands to thecomputer such as openingapplication programs,pulling down menus, orsaving work.
  7. 7. CCTV – CLOSE CIRCUIT TELEVISION This is a television video camera combination used by people who are visually impaired to magnify the prints in books and newspapers. It can also be used to write letters and cheques and do different types of crafts like needle points. Teacher can use this when students are doing research work like looking at magazine or newspaper articles, the teacher can magnify the print to help the student read the content.
  8. 8. BRAILLE KEYBOARD AND PRINTER Adaptive Keyboards are customised to accommodate the learner’s needs i.e. Braille keyboard in various sizes. Braille Embosser – this does printing of Braille. Teacher can use this in providing hand outs and work sheets for the visually impaired learner
  9. 9. SMART CANEThis can assist the learner in movingthrough their environment bycalculating objects all around up to afew metres away.
  10. 10. OCR- OPTICAL CHARACTER RECOGNITION.☻ This is software used to convert scanned texted from books or other documents into information that the computer recognises.☻ Teacher can scan and print official forms (passport, driver’s permit forms) and use in form filling exercises.
  11. 11. SCREEN MAGNIFIERSThe software enlarges the information on the screenby pre-determined incremental factor. Most screen magnification software has the flexibility to magnify the full screen, parts of the screen or provide a magnifying glass view of the area around the cursor or pointer.

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