Anatomy and physiology of eye pdf download

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anatomy and physiology of eye pdf download

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ANATOMY AND PHYSIOLOGY OF THE EYE

Eye anatomy: A closer look at the parts of the eye

Accessory Structure of the Eye Lacrimal apparatus Lacrimal gland - lateral end of eye - produces lacrimal fluid Lacrimal canals - drain lacrimal fluid from eyes. Extrinsic Eye Muscles Muscles attach to the outer surface of the eye Produce eye movements. Superior oblique moves eyeball inferiorly, rotates eyeball medially Inferior oblique- moves eyeball superiorly, rotates it laterally. The Fibrous Tunic Sclera outermost tunic Thick white connective tissue layer Seen anteriorly as the white of the eye Cornea Transparent, central anterior portion Allows for light to pass through Most exposed part Repairs itself easily the only human tissue that can be transplanted without fear of rejection When touched it will cause blinking and tearing of eyes Copyright Pearson Education, Inc. Vascular Layer Choroid Blood-rich nutritive tunic Pigment prevents light from scattering Modified anteriorly into two structures Ciliary body smooth muscles Iris Pigmented layer that gives eye color With circularly and radially arranged smooth muscles Pupil rounded opening in the iris Close vision and bright light pupils will constrict distant vision and dim light pupils will dilate. Sensory Tunic Retina Innermost tunic Extends anteriorly to the ciliary body Contains photoreceptor cells Rods and cones. Allow dim light vision and peripheral vision Perception is all in gray tones Copyright Pearson Education, Inc.

An understanding of the anatomy and physiology of the visual system provides eye White light is reflected off an object, enters the eye through the cornea, and .
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Human Eye Anatomy (seen from above)

Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. See our User Agreement and Privacy Policy. See our Privacy Policy and User Agreement for details. Published on Jul 30, Anatomy and physiology of the eye.

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    The eye is the primary organ of vision. Each one of the two eyeballs is located in the orbit, where it takes up about one-fifth of the orbital volume. (Figure ).

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