Eyes 3.03 Remember the structures of the sensory system 1

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

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

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

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

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

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

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

3.04 Understand the functions and disorders of the sensory system Eye What is the macula? 3.04 Understand the functions and disorders of the sensory system

Eye Process of Seeing Trace the field of vision. Is there anything strange about this picture? Explain Why can’t you see in the dark? 3.04 Understand the functions and disorders of the sensory system

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

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

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

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

3.04 Understand the functions and disorders of the sensory system Vision Activity Do you see what I see? http://www.illusions.org/ 3.04 Understand the functions and disorders of the sensory system

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

3.04 Understand the functions and disorders of the sensory system Disorders of the eye Cataract Describe this lens. 3.04 Understand the functions and disorders of the sensory system

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

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

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

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

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

3.04 Understand the functions and disorders of the sensory system Disorders of the eye Diabetic retinopathy What causes diabetic retinopathy? What are the symptoms? Explain the impact on vision. 3.04 Understand the functions and disorders of the sensory system

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

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

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

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