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Xenon Technology
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How does the eye see? |
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When driving, more than 90% of information reaches the driver via the eye. Because of this, the eye determines our behavior and reactions in everyday traffic situations more than any other sensory organ. But what happens exactly when a person sees?
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The eye works like a camera
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Extremely simplified, the human eye can be compared with a camera whose body corresponds with the opaque sclera of the eye. The object to be "seen" is projected by the "lens" onto the light-sensitive "film". The parts functioning as the lens are the cornea, the iris, the lens and the liquid in the vitreous body. The "film" is the retina. An initial processing of the information takes place in the retina.
Data which have already been pre-encoded are passed via the optic nerve to the "processing laboratory", the optic centre in the brain. Here they are compared with available known patterns and then recognized. Only after all of this has taken place is it possible to react to that which is seen.
At the same time, this conscious vision is further enhanced by the present disposition of the viewer. For example, a high level of attentiveness and experience can optimize the result, while tiredness makes it worse. Seeing is therefore an extremely complicated process which can be easily impaired, as it is not limited only to physical processes.
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