Vision and Function. Vision is not one thing Colour Depth Motion Form Detection Resolution...
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Transcript of Vision and Function. Vision is not one thing Colour Depth Motion Form Detection Resolution...
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Vision and Function
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Vision is not one thing
• Colour• Depth• Motion • Form
• Detection• Resolution• Recognition
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Two systems
• Central - cones
form, detail, colour, high contrast (daylight), static images
• Peripheral - rods
motion, depth, low contrast (night vision), locating objects in space
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Aspects related to visual abilities
• Type
• Degree
• Onset
• Prognosis
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Individual characteristics
• Psychomotor development
• Cognitive development
• Affective development
In relation to environmental conditions
• Physical
• Psychological
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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
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Lea Hyvarinen's 4 leafed cloverof visual functioning
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The Eye
• the importance of vision
• how the eye works
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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.
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Main functions of vision• focus• movement• visual acuity• visual field• stereoscopic vision• colour vision• contrast sensitivity• light sensitivity• visual perception
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http://www-edc.eng.cam.ac.uk/betterdesign/downloads/impairmentsims/
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Vision promotion
• Developmental setback
• Form vision
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Early Support VI Journal
• Record of developing vision
• Developing vision activity cards
• Visual environment and visual materials cards
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Workshop
• Observing Megan