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Chapter 14 The Human Eye How Do We See? 8 November 2013.

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Presentation on theme: "Chapter 14 The Human Eye How Do We See? 8 November 2013."— Presentation transcript:

1 Chapter 14 The Human Eye How Do We See? 8 November 2013

2 Copyright © Marshall Cavendish International (Singapore) Pte. Ltd. 2 8 November 2013 Copyright © Marshall Cavendish International (Singapore) Pte. Ltd. 2 1 How Do We See? object cornea lens aqueous humour Light rays are refracted through the cornea and the aqueous humour onto the lens

3 8 November 2013 Copyright © Marshall Cavendish International (Singapore) Pte. Ltd. 3 8 November 2013 Copyright © Marshall Cavendish International (Singapore) Pte. Ltd How Do We See? object cornea lens aqueous humour The lens causes further refraction Light rays are refracted through the cornea and the aqueous humour onto the lens

4 8 November 2013 Copyright © Marshall Cavendish International (Singapore) Pte. Ltd. 4 8 November 2013 Copyright © Marshall Cavendish International (Singapore) Pte. Ltd How Do We See? object cornea lens aqueous humour retina Rays converge to focus on retina The lens causes further refraction Light rays are refracted through the cornea and the aqueous humour onto the lens

5 8 November 2013 Copyright © Marshall Cavendish International (Singapore) Pte. Ltd. 5 8 November 2013 Copyright © Marshall Cavendish International (Singapore) Pte. Ltd How Do We See? object cornea lens aqueous humour retina image The image on the retina stimulates either the rods or the cones, depending on the intensity of the light Rays converge to focus on retina The lens causes further refraction Light rays are refracted through the cornea and the aqueous humour onto the lens

6 8 November 2013 Copyright © Marshall Cavendish International (Singapore) Pte. Ltd. 6 8 November 2013 Copyright © Marshall Cavendish International (Singapore) Pte. Ltd How Do We See? object cornea lens aqueous humour retina image The image formed is inverted laterally inverted diminished in size The image on the retina stimulates either the rods or the cones, depending on the intensity of the light Rays converge to focus on retina The lens causes further refraction Light rays are refracted through the cornea and the aqueous humour onto the lens


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