Vision.

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Presentation transcript:

Vision

Bony Orbit

Bony Orbit Orbital Walls: Provides protection to the globe A pyramid in shape with apex at foramen Roof - frontal bone, lesser wing of sphenoid Medial - maxilla, lacrimal, ethmoid, body of sphenoid Floor - maxillary, palatine, zygoma Lateral - zygoma, greater wing of sphenoid

Bony Orbit

Globe (human eye)

Surface Anatomy of the Eye Eyebrows divert sweat from the eyes and contribute to facial expressions Eyelids (palpebrae) blink to protect the eye from foreign objects and lubricate their surface Eyelashes detect and prevent foreign objects

Conjunctiva A mucous membrane lining the inside of the eyelids and the anterior surface of the eyes Conjunctivitis (“pinkeye”): inflammation of the conjunctival sac

Lacrimal apparatus

Lacrimal apparatus

Extrinsic Eye Muscles Lateral, medial, superior, and inferior rectus muscles (recall, rectus = straight); superior and inferior oblique muscles

Home work