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Lenses - Coggle Diagram
Lenses
The Eye
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The Retina
When a real image is brought into focus on the retina, that object is seen clearly. If the image is brought to focus in front of or behind the retina the object is blurred.
The eye contains a lens system which consists of the cornea, which acts as a lens of fixed focal length, and an internal lens just behind the cornea that has a variable focal length
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