vision Flashcards
What is the orbit?
Cavity or socket of the skull which houses the eye
What is the function of the orbit?
Protects and stabilizes the eye
What is the superior orbital fissure?
Opening between lesser and greater wings of sphenoid bone
What is the function of superior orbital fissure?
Allows cranial nerves, arteries, and veins to communicate with eye
What is optic canal?
Foramen which the optic nerve passes to reach the brain
Definition of eye
Slightly irregular, hollow sphere
What are the three layers of the eye?
Fibrous, vascular, and inner layer
What is in the fibrous layer of the eye?
Dense avascular - sclera and cornea
What is in the vascular layer of the eye?
Choroid, ciliary bodies, iris
What is in the inner layer of the eye?
Fluids (vitreous and aqueous humor) - shape and retina
What are the functions of sclera?
Protects eye and gives shape
What is sclera?
Is the white portion of the eye and is tough
What is the pupil?
Opening in center of eye
What is neurological function?
Pupils’ reaction to light
Where is iris located in the eye?
Between cornea and lens (colored part of the eye)
What is the function of the iris?
Contract and relax muscle and controls light levels inside eye