Anatomy
What structure has no photoreceptors, known as "blind spot".
optic disc
Which structure controls directional movements of the eye
extrinsic eye muscles
Describe the iris.
Bonus: Sympathetic nervous dilate or constrict eye?
colored part of the eye
Bonus: dilate
What is the disorder called when the sebaceous gland is inflamed at the base of the eyelash.
Sty
Where are the tears absorbed?
Lacrimal puncta
Lacrimal gland secretes tears which contain _________, antibacterial enzyme.
Lysozyme
True or False: Pupil allows light to enter and strike the retina.
True
________ is defect or abnormal curvature in the cornea.
Astigmatism
True or False: The cornea maintains the globe shape of the eye and outermost layer of the eyeball
False: sclera
What is the function of the conjunctiva?
lubricates and reduces friction between eyelid and cornea when blinking
Which structure focuses and bends light by contracting ciliary muscle to focus an image on the retina?
Lens
Explain difference between myopia or presbyopia.
Myopia: near sightedness- globe of eye too elongated or cornea being curved too sharply
Hyperopia: farsightedness
________ of the eye refracts (bends) light when it enters the eye
Cornea
_______ attaches to edges of the lens.
Ciliary Muscle/Body
What are the types of photoreceptors.
Bonus: Which one is more abundant?
Rods and Cones
Bonus: rods
True or False: A detached retina is the retina separated from the choroid layer.
False- usually 2 layers of retina separated lead to death of photoreceptors and neurons due to lack of blood flow from under choroid layer
What layer the eye nourishes retina and assists with absorption of light.
Choroid Layer
What type of fluid is not replaced, so if you lose it, its gone.
Vitreous humor
What type of fluid is replenished?
Aqueous humor
What is disorder which there is excessive pressure in anterior segment when aqueous humor does not drain properly.
Glaucoma