1 / 18

How the visually impaired use computers

How the visually impaired use computers. Contents. Visual impairment ( c liff notes) How VI users interaction with computers Current problems & solutions Alternative solutions. Visual Impairment. Definition.

maisie
Télécharger la présentation

How the visually impaired use computers

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. How the visually impaired use computers

  2. Contents • Visual impairment (cliff notes) • How VI users interaction with computers • Currentproblems& solutions • Alternative solutions

  3. Visual Impairment

  4. Definition A severe reduction in vision that cannot be corrected with standard glasses, contact lenses or surgery and reduces a person's ability to function at certain or all tasks. World Health Organization working definition [1] • Categories • Low vision • Legallyblind • Totallyblind

  5. Normal Severe Age-related Macular Degeneration (AMD) (8.7%) Cataract (47.9%) Glaucoma (12.3%)

  6. Prevalence • 285 million visually impaired worldwide • 246 million: low vision (63% over 50 years ) • 39 million: blind (82% over 50 years) • Elderly are the most affected • females are more at risk • 87% live in developing countries • 85% of visual impairment is avoidable • Includingcataract and Glaucoma

  7. How the vision impaired use computers literature review

  8. Visual Impairment & HCI • Aim • What is the current state-of-art of research in low-vision computer users and their interaction with computers • What interactive interventions and technologies have been investigated in this domain in terms of design and evaluation • Based on the findings, what are the promisingdirections in this research area

  9. Visual Impairment & HCI • Paper inclusion criteria: • Papers that deal with the nature of the diseases • Papers that deal with design and use (usability) of computerized technologies and accessibility software that low vision users use to improve their quality of life. • Empirical studies of low vision computerized technologies in the domain of HCI • Papers published between 1990 - 2010

  10. Visual Impairment & HCI 5. Keywords in tile or abstract • Age related macular degeneration / macular degeneration / AMD / AMRD • Blind • Cataracts • Central scotoma/ Scotoma • Corneal Opacity • Diabetic retinopathy • Glaucoma • Legal blindness / Legally blind • Low vision • Partial vision / Partial sight / Partially sighted • Reduced vision • Vision deficiency / Vision impairment / Vision loss • Visually disabled / Visual disabilities / Visual impairment / visually impaired

  11. Visual Impairment & HCI • 10 HCI Journals • Human Computer Interaction (6.190) • IEEE Transactions on Systems, Man and Cybernetics: B (3.007) • International Journal of Human-Computer Studies (2.380) • User Modeling and User Adapted Interaction (2.345) • IEEE Transactions on Systems, Man and Cybernetics: A (2.033) • IEEE Transactions on Systems, Man and Cybernetics: C (2.016) • Interacting with Computers (1.698) • ACM Transactions on Computer Human Interaction (1.194) • Behavior & Information Technology (0.767) • International Journal of Human Computer Interaction (0.587)

  12. Visual Impairment & HCI • Total results: 504 • 51 papers matched criteria (10.1% of results) • blind: 51% • cataract: 2% • glaucoma: 0% • macular degeneration: 6% • general: 41%

  13. Problems • GUI and Directmanipulation • Web • Accessibility and usability • Confustionpage layout • Inaccessibleimages • Conflictsbetweenaccessibilityapplications and software programs • Misleading info

  14. Command Line Interfaces • Text only interface that allows a user to interact with an OS or software by typing commands to perform specific tasks.   • Cursorpostion and displaycharactersweremapped to a screenbufferin memory IBM-DOS

  15. Hardware solutions • Hardware • Alternativekeyboards • CCTVs • Braildisplays • Tactiledisplays • Audio tapes Reading from CCTV Refreshable brail display

  16. Software solutions • Software • ScreenReader • Most popular because Brail literacty is low • ScreenMagnifier • Selfvoicingapplications Windows start menu viewedwithscreenmagnification

  17. Alternative solutions • Gazecontingentinterfaces • Crowdsourcing • Follow the path • Wizard of OZ • Shareddisplay

  18. ThankYou Questions Comments Suggestions

More Related