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Vision and Function

Vision and Function. Vision is not one thing. Colour Depth Motion Form Detection Resolution Recognition. Two systems. Central - cones form, detail, colour, high contrast (daylight), static images Peripheral - rods

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Vision and Function

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  1. Vision and Function

  2. Vision is not one thing • Colour • Depth • Motion • Form • Detection • Resolution • Recognition

  3. Two systems • Central - cones form, detail, colour, high contrast (daylight), static images • Peripheral - rods motion, depth, low contrast (night vision), locating objects in space

  4. Aspects related to visual abilities • Type • Degree • Onset • Prognosis

  5. Individual characteristics • Psychomotor development • Cognitive development • Affective development In relation to environmental conditions • Physical • Psychological

  6. ICF • Learning and applying knowledge • General tasks and demands • Communication • Mobility • Self care • Domestic life • Interpersonal interactions and relationships • Major life areas • Community, social and civic life

  7. Lea Hyvarinen's 4 leafed cloverof visual functioning

  8. The Eye • the importance of vision • how the eye works

  9. Visual Development • Vision is a learned process. • When babies are born their vision is not yet fully developed. • Children’s sight continues to develop in the first years of life by being used. • It mainly develops during the first year, but continues developing until children are around seven years old.

  10. Main functions of vision • focus • movement • visual acuity • visual field • stereoscopic vision • colour vision • contrast sensitivity • light sensitivity • visual perception

  11. http://www-edc.eng.cam.ac.uk/betterdesign/downloads/impairmentsims/http://www-edc.eng.cam.ac.uk/betterdesign/downloads/impairmentsims/

  12. Vision promotion • Developmental setback • Form vision

  13. Early Support VI Journal • Record of developing vision • Developing vision activity cards • Visual environment and visual materials cards

  14. Workshop • Observing Megan

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