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20 Cards in this Set
- Front
- Back
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What is the eye? |
It is a sense organ that is sensitive to light.
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What does the eye look like? |
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What is the CORNEA? |
It is the Front part of the tough outer coat; it COVERS the front of the eye. |
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What is the function of the CORENEA? |
It allows light in while also protecting the eye. It. REFRACTS light - bends it as it enters the eye.
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What is the IRIS? |
A circular muscle that contracts and relaxes to alter the size of the pupil.
b. It decides the colour of your eyes - so light cannot pass through. |
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What is the function of the IRIS? |
It controls how much light enters the pupil. |
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What is the LENS? |
The lens is the flexible disc behind the iris. |
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What is the function of the Lens? |
It focuses light onto the retina.
b. By changing shape, it changes the focal distance of the eye so that it can focus on objects at various distances. |
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What is the retina? |
a. The lining of the back of eye containing two types of cells which are sensitive to light. - RODS- sensitive to dim light and black and white
CONES- sensitive to colour. b. A small area called the FOVEA in the middle of the retina has many more cones than rods. |
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What is the function of the RETINA? |
It contains the light receptors. |
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What is the OPTIC NERVE? |
The bundle of sensory neurones at back of eye
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What is the function of the OPTIC NERVE? |
Carries information from the eye to the brain.
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What are GESTALT PRICIPLES? |
When parts are identified individually they have different characteristics to the whole e.g. when describing a tree - its parts are trunk, branches, leaves, perhaps blossoms or fruit. But when you look at an entire tree, you are not conscious of the parts, you are aware of the overall object - the tree.
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What are the 6 GETSALT PRICIPLES? |
Principle 1 – Proximity
Principle 2 – Similarity Principle 3 - Common Fate Principle 4 - Good Continuation Principle 5 – Closure Principle 6 - Area and Symmetry |
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What is the principle of PROXIMITY? |
This says that things which are closer together will be seen as belonging together.
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What is the principle of SIMILARITY? |
This says that things which share visual characteristics such as shape, size, colour, texture will be seen as belonging together.
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What is the principle of COMMON FATE? |
This says when we have both principles of PROXIMITY and SIMILARITY in the same place - then a movement takes place -
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What is the principle of GOOD CONTINUATION? |
This says that we prefer to see CONTIONOUS FIGURES (whole) without interruptions.
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What is the principle of CLOSURE? |
This says that we tend to close simple figures.
b. This results in us filling in missing information or organising information which is present to make a whole. |
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What is the principle of AREA and SYMMETRY? |
This describes when the whole of a figure is seen rather than the individual parts which make up the figure.
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