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2) Vision The Special Senses 13 th edition Chapter 17 Pages 635 - 671 12 th edition Chapter 17 Pages 598 - 633.

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Presentation on theme: "2) Vision The Special Senses 13 th edition Chapter 17 Pages 635 - 671 12 th edition Chapter 17 Pages 598 - 633."— Presentation transcript:

1 2) Vision The Special Senses 13 th edition Chapter 17 Pages 635 - 671 12 th edition Chapter 17 Pages 598 - 633

2 Anatomy of the eye

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7 Intraocular Fluid

8 Glaucoma

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10 Retina  Pigmented layer  Photoreceptors  Bipolar cells  Ganglion cells  Horizontal cell  Amacrine cell

11 Photoreceptors  Cones  Rods

12 Photoreceptors  Cones  Rods

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16 Light Detection

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20 Photoreceptors  Cones  Rods  Cones  Rods Photopsin : blue, green and red sensitive pigments

21 Optics of Vision Light refraction

22 Optics of Vision

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24 Accommodation

25 Vision problems

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27 Visual acuity  Normally, people has the ability to distinguish contours that are approximately 1.75 mm apart at 6 meters distance from the eye

28 Vision problems Astigmatism : irregular curvature of either the cornea or the lens, which lead to blurred or distorted vision due to parts of the image are out of focus.

29 Light Adaptation  Pupillary size

30 Pupillary Light Reflex

31 Olivary pretectal nucleus Edinger-Westphal nucleus

32 Light Adaptation  Pupillary size  Neural adaptation  Photoreceptor adaptation

33 Light Adaptation  Pupillary size  Neural adaptation  Photoreceptor adaptation

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35 VISUAL PATHWAY

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