Transcript Eye - cloudfront.net

Nervous System
PNS
https://www.youtube.com/watch?v=gvozcv8pS
3c
Crash Course
https://www.youtube.com/watch?v=o0DYPu1rNM
Superior
oblique
Superior
rectus
Conjunctiva
Lateral rectus
muscle
Optic
nerve
Inferior
rectus
Inferior
oblique
MUSCLE
Turns
EYE…
Controlled
by…
1. SUPERIOR RECTUS
2. INFERIOR RECTUS
Superiorly (up)
III Oculomotor
III
3. LATERAL RECTUS
Laterally (to
side)
VI Abducens
4. MEDIAL RECTUS
Medially
(towards
center)
III
5. SUPERIOR OBLIQUE
Inferiorly &
laterally
IV Trochlear
6. INFERIOR OBLIQUE
Superiorly &
laterally
III
Inferiorly
(down)
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Ciliary body
Ciliary zonule
Iris
Aqueous humor
Lens
Cornea
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Vitreous humor
Optic disc (blind spot)
Fovea centralis
Sclera
Choroid
Retina
Eye part
Class Notes
1. Sclera
2. Cornea
The “white” of eye
3. Lens
4. Iris
5. Ciliary body
Refracts light
6. Ciliary zonule
Attaches the lens to the ciliary
body
7. Aqueous humor
Fluid in the anterior segment
that provides nutrients to the
lens and cornea
Most anterior part of the sclera
– your “window” to the world
Pigmented “diaphragm” of eye
Contains muscle that controls
the shape of the lens
Textbook Notes
Eye Part
Class Notes
8. Vitreous humor
Gel-like substance that helps
reinforce the eyeball
9. Cones & Rods
Photoreceptor cells in the
retina; CONES = daylight &
color / RODS = dim light
10. Retina
Layer containing the rods &
cones at the back of the eye
11. Choroid
Nutritive (vascular) layer of
the eye
12. Fovea centralis
Area of acute vision; a
dimple in the retina where
cones are concentrated
13. Optic disk
“BLIND SPOT”; Area of retina
14. Canal of Schlemm
Drains the aqueous humor
of the eye
that lacks photoreceptors
Textbook Notes
SIGHT & HEARING
 https://www.youtube.com/watch?v=JddHE5l
0y68&ebc=ANyPxKrtDu0_n3CrlFOh5qPJaMK
JkMaoknWzBMQad736gPC48Wzm1PqxVbI8hrKaJkWEdxAAxxTgBbZxt
yho7uhvFIXqG2mSg

http://colorvisiontesting.com/ishihara.htm
What causes colorblindness???
Myopia, Hyperopia & Astigmatism

https://www.youtube.com/watch?v=6YxffFmi4Eo\
Dry eyes

https://www.youtube.com/watch?v=7Nu7wWhsRQU
Conjuntivitis

https://www.youtube.com/watch?v=JLYa2-DymK0
Laser Eye surgery
 https://www.youtube.com/watch?v=6Q_EKXN3EMg