Paraoptometric CPO - anatomy of the eye terms
Anterior Chamber
CORRECT ANSWER - The area inside the eye, behind the cornea, and infront of the iris. This area is filled
with clear, watery fluid called aqueous humor.
Aqueous Humor
CORRECT ANSWER - A clear, watery fluid produced by the Ciliary body. It provides nutrients for the lens
and posterior cornea and carries away waste products. It is also responsible for maintaining the
intraocular pressure because it is the only fluid continually produced in the eye.
Choroid
CORRECT ANSWER - It is sandwiched between the sclera and the retina. It consist primarily of blood
vessels that nourish the retina.
Ciliary muscle
CORRECT ANSWER - The muscle inside of the eyeball that alters the shape of the crystalline lens. It has
the direct control over the focusing ability of the eye.
Conjunctiva
CORRECT ANSWER - The clear tissue that covers the sclera and the inside surface of the eyelids.
, Cornea
CORRECT ANSWER - The clear, transparent tissue that is located on the very front (anterior) portion of
the eye. Is the most powerful refractive media of the eye. It provides most of the eye's ability to focus
light.
Crystalline lens
CORRECT ANSWER - Provides focusing power to the eye. It allows adjustment of the eye to focus from
distance objects to near objects. It is the second most powerful refractive medium.
Extraocular muscles
CORRECT ANSWER - Six muscles attached to the sclera from the bones surrounding the eye that serve to
aim the eyes in directions we wish to look.
Medial rectus muscle
CORRECT ANSWER - It's only action is to turn the eye towards the nose (adduction).
Inferior rectus muscle
CORRECT ANSWER - It's primary action is to turn the eye downward (depression).
Lateral rectus muscle
CORRECT ANSWER - It's only action is to move the eye away from the nose (abduction).
Anterior Chamber
CORRECT ANSWER - The area inside the eye, behind the cornea, and infront of the iris. This area is filled
with clear, watery fluid called aqueous humor.
Aqueous Humor
CORRECT ANSWER - A clear, watery fluid produced by the Ciliary body. It provides nutrients for the lens
and posterior cornea and carries away waste products. It is also responsible for maintaining the
intraocular pressure because it is the only fluid continually produced in the eye.
Choroid
CORRECT ANSWER - It is sandwiched between the sclera and the retina. It consist primarily of blood
vessels that nourish the retina.
Ciliary muscle
CORRECT ANSWER - The muscle inside of the eyeball that alters the shape of the crystalline lens. It has
the direct control over the focusing ability of the eye.
Conjunctiva
CORRECT ANSWER - The clear tissue that covers the sclera and the inside surface of the eyelids.
, Cornea
CORRECT ANSWER - The clear, transparent tissue that is located on the very front (anterior) portion of
the eye. Is the most powerful refractive media of the eye. It provides most of the eye's ability to focus
light.
Crystalline lens
CORRECT ANSWER - Provides focusing power to the eye. It allows adjustment of the eye to focus from
distance objects to near objects. It is the second most powerful refractive medium.
Extraocular muscles
CORRECT ANSWER - Six muscles attached to the sclera from the bones surrounding the eye that serve to
aim the eyes in directions we wish to look.
Medial rectus muscle
CORRECT ANSWER - It's only action is to turn the eye towards the nose (adduction).
Inferior rectus muscle
CORRECT ANSWER - It's primary action is to turn the eye downward (depression).
Lateral rectus muscle
CORRECT ANSWER - It's only action is to move the eye away from the nose (abduction).
