Certified Ophthalmic Assistant| 200
Questions| WITH COMPLETE SOLUTIONS
Course
COA
Question 1
Which tonometry method is generally considered the gold standard for measuring intraocular
pressure (IOP)?
A. Schiotz tonometry
B. Goldmann applanation tonometry
C. Rebound tonometry
D. Noncontact tonometry
Answer: B. Goldmann applanation tonometry
Solution:
Goldmann applanation tonometry is considered the gold standard because it provides highly
accurate measurements of intraocular pressure by flattening a known area of the cornea. It is
commonly used in glaucoma diagnosis and management.
Question 2
A patient has visual acuity recorded as 20/40. What does this mean?
A. The patient sees at 40 feet what a normal person sees at 20 feet.
B. The patient sees at 20 feet what a normal person sees at 40 feet.
C. The patient has perfect vision.
D. The patient is legally blind.
Answer: B. The patient sees at 20 feet what a normal person sees at 40 feet.
Solution:
Visual acuity of 20/40 indicates reduced vision. The patient must be at 20 feet to see what a
person with normal vision can see from 40 feet away.
Question 3
Which structure of the eye is primarily responsible for focusing light onto the retina?
,A. Cornea and lens
B. Retina and optic nerve
C. Iris and pupil
D. Choroid and sclera
Answer: A. Cornea and lens
Solution:
The cornea provides most of the eye's refractive power, while the lens fine-tunes focus through
accommodation. Together they focus incoming light onto the retina.
Question 4
What is the normal range of intraocular pressure?
A. 5–10 mmHg
B. 10–15 mmHg
C. 10–21 mmHg
D. 25–35 mmHg
Answer: C. 10–21 mmHg
Solution:
Normal intraocular pressure generally ranges from 10 to 21 mmHg. Values outside this range
may indicate ocular hypertension or glaucoma risk.
Question 5
Which cranial nerve is responsible for transmitting visual information from the retina to the
brain?
A. Cranial Nerve II
B. Cranial Nerve III
C. Cranial Nerve IV
D. Cranial Nerve VI
Answer: A. Cranial Nerve II
Solution:
The optic nerve (Cranial Nerve II) carries visual impulses from the retina to the visual cortex.
Damage can result in partial or complete vision loss.
,Question 6
What is the purpose of fluorescein dye during an eye examination?
A. To dilate the pupil
B. To measure eye pressure
C. To identify corneal defects
D. To improve retinal imaging
Answer: C. To identify corneal defects
Solution:
Fluorescein dye stains damaged corneal epithelium and is viewed under cobalt blue light, helping
detect abrasions, ulcers, and foreign-body injuries.
Question 7
Which condition is characterized by increased intraocular pressure that can damage the optic
nerve?
A. Cataract
B. Glaucoma
C. Keratitis
D. Strabismus
Answer: B. Glaucoma
Solution:
Glaucoma is a group of diseases associated with optic nerve damage, often caused by elevated
intraocular pressure. It can lead to irreversible vision loss if untreated.
Question 8
During a visual field test, a patient consistently misses objects in the peripheral field. This
finding is called:
A. Diplopia
B. Presbyopia
C. Peripheral vision loss
D. Astigmatism
Answer: C. Peripheral vision loss
, Solution:
Peripheral vision loss affects the outer visual field and is commonly associated with glaucoma,
retinal disorders, or neurological conditions.
Question 9
Which medication is commonly used to dilate the pupil for retinal examination?
A. Timolol
B. Pilocarpine
C. Tropicamide
D. Acetazolamide
Answer: C. Tropicamide
Solution:
Tropicamide is a mydriatic agent that temporarily dilates the pupil, allowing better visualization
of the retina and optic nerve during examination.
Question 10
A patient reports seeing floating spots and flashes of light. Which condition should the
ophthalmic assistant suspect and report immediately?
A. Dry eye syndrome
B. Retinal detachment
C. Conjunctivitis
D. Blepharitis
Answer: B. Retinal detachment
Solution:
Sudden onset of flashes and floaters may indicate retinal detachment, an ophthalmic emergency
requiring immediate evaluation and treatment to preserve vision.
Question 11
Which part of the eye controls the amount of light entering the eye?
A. Cornea
B. Retina
C. Iris
D. Optic nerve
Questions| WITH COMPLETE SOLUTIONS
Course
COA
Question 1
Which tonometry method is generally considered the gold standard for measuring intraocular
pressure (IOP)?
A. Schiotz tonometry
B. Goldmann applanation tonometry
C. Rebound tonometry
D. Noncontact tonometry
Answer: B. Goldmann applanation tonometry
Solution:
Goldmann applanation tonometry is considered the gold standard because it provides highly
accurate measurements of intraocular pressure by flattening a known area of the cornea. It is
commonly used in glaucoma diagnosis and management.
Question 2
A patient has visual acuity recorded as 20/40. What does this mean?
A. The patient sees at 40 feet what a normal person sees at 20 feet.
B. The patient sees at 20 feet what a normal person sees at 40 feet.
C. The patient has perfect vision.
D. The patient is legally blind.
Answer: B. The patient sees at 20 feet what a normal person sees at 40 feet.
Solution:
Visual acuity of 20/40 indicates reduced vision. The patient must be at 20 feet to see what a
person with normal vision can see from 40 feet away.
Question 3
Which structure of the eye is primarily responsible for focusing light onto the retina?
,A. Cornea and lens
B. Retina and optic nerve
C. Iris and pupil
D. Choroid and sclera
Answer: A. Cornea and lens
Solution:
The cornea provides most of the eye's refractive power, while the lens fine-tunes focus through
accommodation. Together they focus incoming light onto the retina.
Question 4
What is the normal range of intraocular pressure?
A. 5–10 mmHg
B. 10–15 mmHg
C. 10–21 mmHg
D. 25–35 mmHg
Answer: C. 10–21 mmHg
Solution:
Normal intraocular pressure generally ranges from 10 to 21 mmHg. Values outside this range
may indicate ocular hypertension or glaucoma risk.
Question 5
Which cranial nerve is responsible for transmitting visual information from the retina to the
brain?
A. Cranial Nerve II
B. Cranial Nerve III
C. Cranial Nerve IV
D. Cranial Nerve VI
Answer: A. Cranial Nerve II
Solution:
The optic nerve (Cranial Nerve II) carries visual impulses from the retina to the visual cortex.
Damage can result in partial or complete vision loss.
,Question 6
What is the purpose of fluorescein dye during an eye examination?
A. To dilate the pupil
B. To measure eye pressure
C. To identify corneal defects
D. To improve retinal imaging
Answer: C. To identify corneal defects
Solution:
Fluorescein dye stains damaged corneal epithelium and is viewed under cobalt blue light, helping
detect abrasions, ulcers, and foreign-body injuries.
Question 7
Which condition is characterized by increased intraocular pressure that can damage the optic
nerve?
A. Cataract
B. Glaucoma
C. Keratitis
D. Strabismus
Answer: B. Glaucoma
Solution:
Glaucoma is a group of diseases associated with optic nerve damage, often caused by elevated
intraocular pressure. It can lead to irreversible vision loss if untreated.
Question 8
During a visual field test, a patient consistently misses objects in the peripheral field. This
finding is called:
A. Diplopia
B. Presbyopia
C. Peripheral vision loss
D. Astigmatism
Answer: C. Peripheral vision loss
, Solution:
Peripheral vision loss affects the outer visual field and is commonly associated with glaucoma,
retinal disorders, or neurological conditions.
Question 9
Which medication is commonly used to dilate the pupil for retinal examination?
A. Timolol
B. Pilocarpine
C. Tropicamide
D. Acetazolamide
Answer: C. Tropicamide
Solution:
Tropicamide is a mydriatic agent that temporarily dilates the pupil, allowing better visualization
of the retina and optic nerve during examination.
Question 10
A patient reports seeing floating spots and flashes of light. Which condition should the
ophthalmic assistant suspect and report immediately?
A. Dry eye syndrome
B. Retinal detachment
C. Conjunctivitis
D. Blepharitis
Answer: B. Retinal detachment
Solution:
Sudden onset of flashes and floaters may indicate retinal detachment, an ophthalmic emergency
requiring immediate evaluation and treatment to preserve vision.
Question 11
Which part of the eye controls the amount of light entering the eye?
A. Cornea
B. Retina
C. Iris
D. Optic nerve
