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Optical illusions and how the eye works

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by

Brynja Tebbutt

on 19 April 2010

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Transcript of Optical illusions and how the eye works

Optical illusions and how the eye works The eye: The lens:

Focuses light and helps
you to see clearly.
The cornea:

A thin layer of transparent
skin covering the outside
of your eye. The pupil:

An opening in the centre
of the iris that can change
in size according to the
lighting.

The iris:

The coloured part of the eye
that opens and closes the pupil.
The Sclera:

The white part of the
eye. The retina:

Recieves light and then
converts it into signals. The optic nerve:

Interprets the impulses it
recieves into images to the
brain.
Optical illusions: There are three different types of optical
illusions. The first type is an image where your eyes and brain
make unconscious inferences . With this image, you could infer it to be a
woman walking along a cobbled street or a
face. The second type effects the eyes and
brain with excessive simulation of a specific type
(brightness, movement, colour, tilt). This image appears to be moving. The third type is an image of several
smaller objects that together make up a whole
new picture.
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