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 motion, depth, low contrast (night vision), locating objects in space

Aspects related to visual abilities Type Degree Onset Prognosis

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

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

Lea Hyvarinen's 4 leafed clover of visual functioning

The Eye the importance of vision how the eye works

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.

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

Vision promotion Developmental setback Form vision

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

Workshop Observing Megan