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Eyes 3.03 Remember the structures of the sensory system1.

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Presentation on theme: "Eyes 3.03 Remember the structures of the sensory system1."— Presentation transcript:

1 Eyes 3.03 Remember the structures of the sensory system1

2 Structures of the eyes External structures External structures Orbit Eyelids Eyelashes Conjunctiva Lacrimal apparatus Extrinsic muscles 3.03 Remember the structures of the sensory system2

3 Eye External eye Orbit Orbit Eyelids and eyelashes Eyelids and eyelashes Women blink twice as often as men. Why do we blink? Conjunctiva Conjunctiva Lacrimal apparatus Lacrimal apparatus Extrinsic muscles Extrinsic muscles 3.04 Understand the functions and disorders of the sensory system 3 Interesting tidbit

4 Eye External eye Extrinsic muscles Extrinsic muscles 3.04 Understand the functions and disorders of the sensory system 4 Which extrinsic muscle allows you to look upward?

5 Eye Internal eye Cornea Cornea Iris Iris Pupil Pupil 3.04 Understand the functions and disorders of the sensory system 5

6 Eye Internal eye Ciliary body Ciliary body Lens Lens Aqueous humor Aqueous humor 3.04 Understand the functions and disorders of the sensory system 6

7 Eye Internal eye Sclera Sclera Choroid Choroid Retina Retina 3.04 Understand the functions and disorders of the sensory system 7

8 Eye Internal eye Vitreous humor Vitreous humor 3.04 Understand the functions and disorders of the sensory system 8

9 Eye 3.04 Understand the functions and disorders of the sensory system 9

10 Eye Process of Seeing Trace the field of vision. Trace the field of vision. Is there anything strange about this picture? Explain Is there anything strange about this picture? Explain 3.04 Understand the functions and disorders of the sensory system 10 Why cant you see in the dark?

11 Eye 3.04 Understand the functions and disorders of the sensory system 11 What happens as you move your paper away from and toward to your eye? Vision

12 Eyes Rods and cones Rods and cones Rods Active in dim light Do not perceive color Cones Active in bright light Perceive color 3.03 Remember the structures of the sensory system12

13 Eyes Review Review 3.03 Remember the structures of the sensory system 13

14 3.04 Understand the functions and disorders of the sensory system 14 Check your knowledge!

15 3.04 Understand the functions and disorders of the sensory system 15 Vision Activity Do you see what I see?

16 Disorders of the eye 3.04 Understand the functions and disorders of the sensory system 16 Cataract Glaucoma Hyperopia Myopia Presbyopia Astigmatism Diabetic retinopathy Detached retina Have you heard of these conditions? What do you know about them? Color blindness Conjunctivitis

17 Disorders of the eye Describe this lens Understand the functions and disorders of the sensory system 17 Cataract

18 Disorders of the eye Cataract How is a cataract treated? 3.04 Understand the functions and disorders of the sensory system 18

19 Disorders of the eye Color blindness Do you see the number? Do you see the number? What is color blindness? What is color blindness? What causes it? What causes it? Who is most likely to have color blindness? Who is most likely to have color blindness? 3.04 Understand the functions and disorders of the sensory system 19

20 Disorders of the eye Conjunctivitis What is conjunctivitis? What is conjunctivitis? What are the symptoms? What are the symptoms? What causes it? What causes it? How is it treated? How is it treated? 3.04 Understand the functions and disorders of the sensory system 20

21 Detached retina 3.04 Understand the functions and disorders of the sensory system 21 Discuss what happens in this process. What is the relevance to health?

22 3.04 Understand the functions and disorders of the sensory system 22 Detached retina Compare this process to the previous picture. What might cause this condition?

23 Disorders of the eye Diabetic retinopathy What causes diabetic retinopathy? What causes diabetic retinopathy? What are the symptoms? What are the symptoms? Explain the impact on vision. Explain the impact on vision Understand the functions and disorders of the sensory system 23

24 Disorders of the eye Glaucoma What are the common symptoms of glaucoma? What are the common symptoms of glaucoma? How is it diagnosed? How is it diagnosed? How is it treated? How is it treated? 3.04 Understand the functions and disorders of the sensory system 24

25 Disorders of the eye Macular degeneration What is macular degeneration? What is macular degeneration? Compare the two types. Compare the two types. How is it diagnosed? How is it diagnosed? What is the treatment? What is the treatment? 3.04 Understand the functions and disorders of the sensory system 25

26 3.04 Understand the functions and disorders of the sensory system 26 Compare the symptoms and treatments of these common eye disorders. Can a person have more than one of these disorders? Explain. Problems with Focus

27 Testing vision How do we test visual acuity? How do we test visual acuity? What is 20/20? What is 20/20? What does PERRLA mean? What does PERRLA mean? 3.04 Understand the functions and disorders of the sensory system 27


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