Eyes 3.03 Remember the structures of the sensory system 1
Eyes 3.03 Remember the structures of the sensory system1.
Mar 27, 2015
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Eyes
3.03 Remember the structures of the sensory system 1
Structures of the eyes External structuresExternal structures
OrbitEyelidsEyelashesConjunctivaLacrimal apparatusExtrinsic muscles
3.03 Remember the structures of the sensory system 2
Eye
External eyeExternal eyeOrbitOrbit
Eyelids and eyelashesEyelids and eyelashesWomen blink twice as often as men. Why do we blink?
ConjunctivaConjunctiva
Lacrimal apparatusLacrimal apparatus
Extrinsic musclesExtrinsic muscles3.04 Understand the functions and
disorders of the sensory system3
Interesting
tidbit
Eye
External eyeExternal eye
Extrinsic Extrinsic musclesmuscles
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Which extrinsic muscle
Which extrinsic muscle
allows you to look upward?
allows you to look upward?
Eye
Internal eyeInternal eyeCorneaCornea
IrisIris
PupilPupil
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Eye
Internal eyeInternal eyeCiliary bodyCiliary body
LensLens
Aqueous Aqueous humorhumor
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Eye
Internal eyeInternal eyeScleraSclera
ChoroidChoroid
RetinaRetina
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Eye
Internal eyeInternal eye
Vitreous Vitreous humorhumor
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Eye
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Eye
Process of SeeingProcess of Seeing
Trace the field of Trace the field of vision.vision.
Is there anything Is there anything strange about this strange about this picture? Explainpicture? Explain
3.04 Understand the functions and disorders of the sensory system
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Why can’t you see in the dark?
Eye
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What happens as you move What happens as you move your paper away from and your paper away from and
toward to your eye?toward to your eye?
VisionVision
Eyes Rods and conesRods and cones
Rods Active in dim lightDo not perceive color
ConesActive in bright lightPerceive color
3.03 Remember the structures of the sensory system 12
Eyes ReviewReview
3.03 Remember the structures of the sensory system13
3.04 Understand the functions and disorders of the sensory system
14
Check your knowledge!
3.04 Understand the functions and disorders of the sensory system
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Vision ActivityVision Activity
Do you see what I see?Do you see what I see?http://www.illusions.org/
Disorders of the eye
3.04 Understand the functions and disorders of the sensory system
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CataractCataract
GlaucomaGlaucoma
Hyperopia
Hyperopia
MyopiaMyopia
Presbyopia
PresbyopiaAstigmatismAstigmatism
DiabeticDiabetic retinopathyretinopathyDetachedDetached retinaretina
Have you heard of these conditions?What do you know about them?
Color blindnessColor blindness
ConjunctivitisConjunctivitis
Disorders of the eye
Describe this lens.Describe this lens.
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CataractCataract
Disorders of the eye
CataractCataract
How is a How is a cataract cataract treated?treated?
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Disorders of the eye
Color blindnessColor blindnessDo you see the Do you see the number?number?What is color What is color blindness?blindness?What causes it?What causes it?Who is most likely to Who is most likely to have color blindness?have color blindness?
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Disorders of the eye
ConjunctivitisConjunctivitisWhat 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?
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Detached retinaDetached retina
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Discuss what happens Discuss what happens in this process.in this process.
What is the relevance What is the relevance to health?to health?
3.04 Understand the functions and disorders of the sensory system
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Detached retinaDetached retina
Compare this process Compare this process to the previous picture.to the previous picture.
What might cause this What might cause this condition?condition?
Disorders of the eyeDiabetic Diabetic retinopathyretinopathyWhat causes diabetic What causes diabetic retinopathy?retinopathy?
What are the What are the symptoms?symptoms?
Explain the impact Explain the impact on vision.on vision.
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Disorders of the eye
GlaucomaGlaucomaWhat are the What are the common symptoms common symptoms of glaucoma?of glaucoma?How is it How is it diagnosed?diagnosed?How is it treated?How is it treated?
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Disorders of the eye
Macular degenerationMacular 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
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Compare the symptoms and treatments of these common eye disorders.
Can a person have more than one of these disorders? Explain.
Problems with FocusProblems with Focus
Testing vision
How do we test visual How do we test visual acuity?acuity?
What is 20/20?What is 20/20?
What does PERRLA What does PERRLA mean?mean?
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