COA JCAHPO Exam Questions And
Correct Answers|2026 Updated
A patient who wears contact lenses has had red eyes for 2 days, How should this
patient be triaged?
A.Schedule routinely within 1 month
B.Schedule at your office within 1 week.
C.Send immediately to the nearest emergency room
D.Schedule at your clinic as an urgent add-on within 24 hours - ANSWER-D Schedule
at your clinic as an urgent add-on within 24 hours
Patients most commonly cite which systemic drug as producing an allergic or bad
reaction?
A. Acetaminophen
B. Ampicillin
C. Tetracycline
D. Tobramycin - ANSWER-B. Ampicillin
Extended wear contact lenses are made of materials that allow greater permeability of
A. water
B. oxygen
C. carbon dioxide
D. proteins - ANSWER-B. oxygen
Which of the conditions listed below may be characterized by a white pupillary reflex in
a pediatric patient?
A. Choroidal nevus
B. Congenital glaucoma
C. Iris coloboma
D. Retinoblastoma - ANSWER-D. Retinoblastoma
Which eye drop inactivates the sphincter muscle of the iris?
A) Cycloplegic
B) Anesthetic
C) Miotic
D) Mydriatic - ANSWER-A) Cycloplegic
In which of the following ocular conditions is the direction of gaze a factor in intraocular
pressure determination?
A. Chronic angle glaucoma
B. Thyroid ophthalmology
C. Central retinal vein occlusion
D. Iritis with secondary glaucoma - ANSWER-B. Thyroid ophthalmology
,What is the principle reason for the routine preference of the subjective over objective
refraction?
A. Automated retinoscopy systems make refraction efficient
B. The Jackson cross cylinder is easy to use
C. Sphero-cylinder evaluation is easy
D. The patient's preference is considered in the process - ANSWER-D. The patient's
preference is considered in the process
Evaluating the range and symmetry of motion of both eyes together is known as
A. ductions
B. versions
C. phorias
D. tropias - ANSWER-B. versions
Which of the following is a sign?
A. A black speck in the field of vision.
B. Complaints of difficulty reading
C. Double vision
D. A shallow anterior chamber - ANSWER-D. A shallow anterior chamber
If a person is able to clearly see an object at 20 feet that can be seen at 60 feet by a
person with no refractive error, their visual acuity is said to be
A. 20/20
B. 20/40
C. 20/60
D. 20/80 - ANSWER-C. 20/60
Why should laminated acuity projector slides NOT be cleaned under running water?
A. Retained moisture might short out the projector.
B The letters, numerals, and/or characters will be washed off the slide.
C. The specially heated glass of the projector slide will lose its heat-resistant properties.
D. Water beads can pool between the two layers of glass - ANSWER-D. Water beads
can pool between the two layers of glass
What examination distinguishes a constant tropia from an intermittent tropia?
A. The alternating cover test with prism.
B. The cover-uncover test
C. The Krimsky Test
D. The Hirschberg test - ANSWER-B. The cover-uncover test
What is first seen (recorded) in fluorescein angiography?
,A. Arterial phase
B. Capillary phase
C. Choroidal flush
D. Venous phase - ANSWER-C. Choroidal flush
What is the best way to perform the Worth 4-Dot test on a child?
A. tell the child there are 4 lights and ask which colors they see.
B. Tell the child to alternately close one eye and the other.
C. Ask which color the child sees.
D. Give the child the flashlight before they put the glasses on. - ANSWER-C. Ask which
color the child sees.
How soon should aspirin and other blood thinners be discontinued prior to cataract
surgery?
A. 1 week
B. 2 weeks
C. 3 weeks
D. 4 weeks - ANSWER-A. 1 week
The denominator in the visual acuity recording of a low vision patient is:
A. equal to the numerator
B. the same for both eyes
C. larger than for the patient with normal visual acuity
D. smaller than for a patient with normal visual acuity - ANSWER-C. larger than for the
patient with normal visual acuity
How many nerves innervate the six extraocular muscles?
A. 1
B. 2
C. 3
D. 4 - ANSWER-C. 3
A person with a fold of skin overlying the nasal area of the eye lids has :
A. blepharochalasis
B. entropion
C. epicanthus
D. Lagophthalmos - ANSWER-C. epicanthus
Which of the following properly represents the steps used to convert spherocylindrical
lens into its sphere equivalent?
, A. Divide the spherical power in half; then add the cylinder power
B. Add the spherical and cylinder power; then divide by 2
C. Divide the cylinder power in half; then add the spherical power
D. Divide the cylinder power in half; then subtract the spherical power - ANSWER-C.
Divide the cylinder power in half; then add the spherical power
On the back of a frame are a few figures such as 46x22. What do these numbers
represent?
A. Bridge and lens size
B. Pupillary distance and segment height
C. Lens and bridge
D. Segment height and pupillary - ANSWER-C. Lens and bridge
Which of the following is the MOST common complication of patching an eye?
A. Corneal abrasion
B. Elevated intraocular pressure
C. Dilation of the pupil
D. Tear flow reduction - ANSWER-A. Corneal abrasion
What is the diameter of the plastic prism comprised of a flat surface within the
applanation tonometer?
A. 1.5 mm
B. 3.0 mm
C. 6.0 mm
D. 7.0 mm - ANSWER-B. 3.0 mm
Changing the base curve of a contact lens changes the fitting characteristics of that lens
due to a change in sagittal depth. Increasing the base curve radius of a contact lens
while maintaining the same diameter will cause the lens to fit:
A. steeper and tighter
B. flatter and looser
C. higher and tighter
D. lower and looser - ANSWER-B. flatter and looser
The three-color receptors found in cones are
A. blue, green and yellow
B. red, green and blue
C. red, green and yellow
D. red, yellow and blue - ANSWER-B. red, green and blue
Correct Answers|2026 Updated
A patient who wears contact lenses has had red eyes for 2 days, How should this
patient be triaged?
A.Schedule routinely within 1 month
B.Schedule at your office within 1 week.
C.Send immediately to the nearest emergency room
D.Schedule at your clinic as an urgent add-on within 24 hours - ANSWER-D Schedule
at your clinic as an urgent add-on within 24 hours
Patients most commonly cite which systemic drug as producing an allergic or bad
reaction?
A. Acetaminophen
B. Ampicillin
C. Tetracycline
D. Tobramycin - ANSWER-B. Ampicillin
Extended wear contact lenses are made of materials that allow greater permeability of
A. water
B. oxygen
C. carbon dioxide
D. proteins - ANSWER-B. oxygen
Which of the conditions listed below may be characterized by a white pupillary reflex in
a pediatric patient?
A. Choroidal nevus
B. Congenital glaucoma
C. Iris coloboma
D. Retinoblastoma - ANSWER-D. Retinoblastoma
Which eye drop inactivates the sphincter muscle of the iris?
A) Cycloplegic
B) Anesthetic
C) Miotic
D) Mydriatic - ANSWER-A) Cycloplegic
In which of the following ocular conditions is the direction of gaze a factor in intraocular
pressure determination?
A. Chronic angle glaucoma
B. Thyroid ophthalmology
C. Central retinal vein occlusion
D. Iritis with secondary glaucoma - ANSWER-B. Thyroid ophthalmology
,What is the principle reason for the routine preference of the subjective over objective
refraction?
A. Automated retinoscopy systems make refraction efficient
B. The Jackson cross cylinder is easy to use
C. Sphero-cylinder evaluation is easy
D. The patient's preference is considered in the process - ANSWER-D. The patient's
preference is considered in the process
Evaluating the range and symmetry of motion of both eyes together is known as
A. ductions
B. versions
C. phorias
D. tropias - ANSWER-B. versions
Which of the following is a sign?
A. A black speck in the field of vision.
B. Complaints of difficulty reading
C. Double vision
D. A shallow anterior chamber - ANSWER-D. A shallow anterior chamber
If a person is able to clearly see an object at 20 feet that can be seen at 60 feet by a
person with no refractive error, their visual acuity is said to be
A. 20/20
B. 20/40
C. 20/60
D. 20/80 - ANSWER-C. 20/60
Why should laminated acuity projector slides NOT be cleaned under running water?
A. Retained moisture might short out the projector.
B The letters, numerals, and/or characters will be washed off the slide.
C. The specially heated glass of the projector slide will lose its heat-resistant properties.
D. Water beads can pool between the two layers of glass - ANSWER-D. Water beads
can pool between the two layers of glass
What examination distinguishes a constant tropia from an intermittent tropia?
A. The alternating cover test with prism.
B. The cover-uncover test
C. The Krimsky Test
D. The Hirschberg test - ANSWER-B. The cover-uncover test
What is first seen (recorded) in fluorescein angiography?
,A. Arterial phase
B. Capillary phase
C. Choroidal flush
D. Venous phase - ANSWER-C. Choroidal flush
What is the best way to perform the Worth 4-Dot test on a child?
A. tell the child there are 4 lights and ask which colors they see.
B. Tell the child to alternately close one eye and the other.
C. Ask which color the child sees.
D. Give the child the flashlight before they put the glasses on. - ANSWER-C. Ask which
color the child sees.
How soon should aspirin and other blood thinners be discontinued prior to cataract
surgery?
A. 1 week
B. 2 weeks
C. 3 weeks
D. 4 weeks - ANSWER-A. 1 week
The denominator in the visual acuity recording of a low vision patient is:
A. equal to the numerator
B. the same for both eyes
C. larger than for the patient with normal visual acuity
D. smaller than for a patient with normal visual acuity - ANSWER-C. larger than for the
patient with normal visual acuity
How many nerves innervate the six extraocular muscles?
A. 1
B. 2
C. 3
D. 4 - ANSWER-C. 3
A person with a fold of skin overlying the nasal area of the eye lids has :
A. blepharochalasis
B. entropion
C. epicanthus
D. Lagophthalmos - ANSWER-C. epicanthus
Which of the following properly represents the steps used to convert spherocylindrical
lens into its sphere equivalent?
, A. Divide the spherical power in half; then add the cylinder power
B. Add the spherical and cylinder power; then divide by 2
C. Divide the cylinder power in half; then add the spherical power
D. Divide the cylinder power in half; then subtract the spherical power - ANSWER-C.
Divide the cylinder power in half; then add the spherical power
On the back of a frame are a few figures such as 46x22. What do these numbers
represent?
A. Bridge and lens size
B. Pupillary distance and segment height
C. Lens and bridge
D. Segment height and pupillary - ANSWER-C. Lens and bridge
Which of the following is the MOST common complication of patching an eye?
A. Corneal abrasion
B. Elevated intraocular pressure
C. Dilation of the pupil
D. Tear flow reduction - ANSWER-A. Corneal abrasion
What is the diameter of the plastic prism comprised of a flat surface within the
applanation tonometer?
A. 1.5 mm
B. 3.0 mm
C. 6.0 mm
D. 7.0 mm - ANSWER-B. 3.0 mm
Changing the base curve of a contact lens changes the fitting characteristics of that lens
due to a change in sagittal depth. Increasing the base curve radius of a contact lens
while maintaining the same diameter will cause the lens to fit:
A. steeper and tighter
B. flatter and looser
C. higher and tighter
D. lower and looser - ANSWER-B. flatter and looser
The three-color receptors found in cones are
A. blue, green and yellow
B. red, green and blue
C. red, green and yellow
D. red, yellow and blue - ANSWER-B. red, green and blue
