CERTIFIED OPHTHALMIC ASSISTANT exam 2024-2025 |COMPLETE
QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS )
ALREADY GRADED A+.
what muscle elevates the eyelid? - ANSWER -levator palpebrae
superioris
what are the triangular spaces formed by the junction of the upper
and lower lids called? - ANSWER -canthi
what is the pathway of tears? - ANSWER -lacrimal gland --> lacrimal
ducts --> lacrimal punctum --> lacrimal caniculi --> lacrimal sac -->
nasolacrimal duct
what does the orbicularis oculi muscle do? - ANSWER -closes the eye
when it contracts
what is the area called where the bulbar and palpebral conjunctiva
meet called? - ANSWER -fornix
what are the three layers of the tear film? what produces each layer? -
ANSWER -lipid layer- meibomian glands, aqueous layer- lacrimal
glands, mucous layer- goblet cells in the conjunctiva
t/f the lens has the most refractive power in the eye - ANSWER -f- the
cornea has the most refractive power
,list the five layers of the cornea from outer to inner - ANSWER
epithelium, bowman's membrane, stroma, descemet's membrane,
endothelium
which layer of the cornea acts as a barrier and powerful refractive
surface, regenerates rapidly, heals without leaving a scar, and is
commonly damaged by superficial abrasions? - ANSWER -epithelium
t/f bowman's layer is acellular and has no regenerative abilities -
ANSWER -t
which layer of the cornea accounts for 90% of the thickness of the
cornea and is composed of 78% water - ANSWER -stroma
what later of the cornea forms the basement membrane of the
epithelial cells and retracts when cut because of its high elasticity? -
ANSWER -descemet's membrane
what layer of the cornea is responsible for maintaining
deturgenscence and does not regenerate? - ANSWER -endothelium
what three components make up the uveal tract? - ANSWER -iris,
ciliary body, choroid
what muscle contracts the iris? - ANSWER -sphincter pupillae
, what is the anterior chamber? what is it filled with? - ANSWER -space
between cornea and iris, aqueous humor
what is the purpose of the ciliary body? - ANSWER -produces
aqueous humor, place where zonules originate, controls the size and
shape of the lens
what is the process of accommodation in terms of the lens? -
ANSWER -contraction of the ciliary muscle releases tension of the
zonular fibers, allows the anterior surface of the lens to bulge forward
an increase the focusing power of the eye
where is the choroid located? what does it do? - ANSWER -between
sclera and retina, provides nourishment of outer layers of the retina
what is the pathway of aqueous humor in the anterior chamber? -
ANSWER -produced by the ciliary body, flows from posterior chamber
through pupil to AC, leaves AC by filtering through the trabecular
meshwork, reaches Schlemms canal and exits eye through aqueous
veins
t/f the lens is a biconvex structure that is attached to the ciliary
process by zonular fibers - ANSWER -t
QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS )
ALREADY GRADED A+.
what muscle elevates the eyelid? - ANSWER -levator palpebrae
superioris
what are the triangular spaces formed by the junction of the upper
and lower lids called? - ANSWER -canthi
what is the pathway of tears? - ANSWER -lacrimal gland --> lacrimal
ducts --> lacrimal punctum --> lacrimal caniculi --> lacrimal sac -->
nasolacrimal duct
what does the orbicularis oculi muscle do? - ANSWER -closes the eye
when it contracts
what is the area called where the bulbar and palpebral conjunctiva
meet called? - ANSWER -fornix
what are the three layers of the tear film? what produces each layer? -
ANSWER -lipid layer- meibomian glands, aqueous layer- lacrimal
glands, mucous layer- goblet cells in the conjunctiva
t/f the lens has the most refractive power in the eye - ANSWER -f- the
cornea has the most refractive power
,list the five layers of the cornea from outer to inner - ANSWER
epithelium, bowman's membrane, stroma, descemet's membrane,
endothelium
which layer of the cornea acts as a barrier and powerful refractive
surface, regenerates rapidly, heals without leaving a scar, and is
commonly damaged by superficial abrasions? - ANSWER -epithelium
t/f bowman's layer is acellular and has no regenerative abilities -
ANSWER -t
which layer of the cornea accounts for 90% of the thickness of the
cornea and is composed of 78% water - ANSWER -stroma
what later of the cornea forms the basement membrane of the
epithelial cells and retracts when cut because of its high elasticity? -
ANSWER -descemet's membrane
what layer of the cornea is responsible for maintaining
deturgenscence and does not regenerate? - ANSWER -endothelium
what three components make up the uveal tract? - ANSWER -iris,
ciliary body, choroid
what muscle contracts the iris? - ANSWER -sphincter pupillae
, what is the anterior chamber? what is it filled with? - ANSWER -space
between cornea and iris, aqueous humor
what is the purpose of the ciliary body? - ANSWER -produces
aqueous humor, place where zonules originate, controls the size and
shape of the lens
what is the process of accommodation in terms of the lens? -
ANSWER -contraction of the ciliary muscle releases tension of the
zonular fibers, allows the anterior surface of the lens to bulge forward
an increase the focusing power of the eye
where is the choroid located? what does it do? - ANSWER -between
sclera and retina, provides nourishment of outer layers of the retina
what is the pathway of aqueous humor in the anterior chamber? -
ANSWER -produced by the ciliary body, flows from posterior chamber
through pupil to AC, leaves AC by filtering through the trabecular
meshwork, reaches Schlemms canal and exits eye through aqueous
veins
t/f the lens is a biconvex structure that is attached to the ciliary
process by zonular fibers - ANSWER -t
