COA Preview

Question 1

What is the definition of a chief complaint?
A. the condition causing the visual problem
B. the condition explaining the patient’s complaint
C. the reason causing the patient to seek care
D. a serious medical problem from the patient’s past medical history

History and Documentation 5%

Answer 1

C. the reason causing the patient to seek care

Question 2

What does a pinhole acuity test confirm?
A. the patient has a vitreous hemorrhage
B. the patient is legally blind
C. the patient is presbyopic
D. the patient has a refractive error

Visual Assessment 6%

Answer 2

D. the patient has a refractive error

Question 3

Amsler grids are used to test the central this many degrees of vision.
A. 60°
B. 50°
C. 30°
D. 20°

Visual Field Testing 4%

Answer 3

D. 20°

It measures 10° from the center to each side and up and down

Question 4

What is the term meaning unequal pupil size?
A. anisocoria
B. anisometropia
C. anisochromia
D. aniseikonia

Pupil Assessment 3%

Answer 4

A. anisocoria

Question 5

What is the end point of applanation tonometry?
A. when the outer ends of the mires meet
B. when the mires are on top of each other
C. when the inner ends of the mires meet
D. when the mires make a circle

Tonometry 4%

Answer 5

C. when the inner ends of the mires meet

Question 6

The manual keratometer measures how much of the cornea?
A. the whole corneal curvature
B. approximately the central 3 mm
C. approximately the central 8 mm
D. only the peripheral cornea

Keratometry 2%

Answer 6

B. approximately the central 3 mm

AKA the central Cap of the cornea, topography measures the whole cornea

Question 7

What combination of extraocular muscle actions occur when a patient looks left?
A. left LR contracts; right LR relaxes
B. left LR contracts; right LR contracts
C. left MR contracts; right LR relaxes
D. left MR relaxes; right MR relaxes

Ocular Motility Testing 4%

Answer 7

A. left LR contracts; right LR relaxes

Left LR and Right MR contract, while the Right LR and Left MR must relax

Sherrington’s Law

Question 8

A lens can be read in plus or minus by
A. changing the axis 180°
B. changing the axis 90°
C. changing the axis 360°
D. changing the axis 45°

Lensometry 3%

Answer 8

B. changing the axis 90°

Question 9

Which of the following is false regarding convex lenses?
A. they cause magnification
B. the movement of the images are against movement of the lens
C. they are used in the treatment of hyperopia
D. they are used in the treatment of myopia

Refraction, Retinoscopy, and Refinement 5%

Answer 9

D. they are used in the treatment of myopia

False!

Question 10

A measurement error of 1 mm in the axial length of the eye can result in how much of an unwanted postoperative refractive error?
A. 3 D
B. 2 D
C. 1 D
D. no difference

Biometry 3%

Answer 10

A. 3 D

The measurements should always be redone to confirm the difference

Question 11

Anterior chamber depth measures the distance between which two ocular structures?
A. outer surface of the cornea and lens
B. outer surface of the iris and lens
C. inner surface of the cornea and iris
D. inner surface of the cornea and lens

Supplemental Testing 3%

Answer 11

C. inner surface of the cornea and iris

Question 12

Which of the following microorganisms are responsible for epidemic keratoconjunctivitis (EKC)?
A. Staphylococcus aureus
B. Adenovirus
C. Treponema
D. Streptococcus pneumoniae

Microbiology 3%

Answer 12

B. Adenovirus

AKA “Pink Eye”
Same as the common cold and is highly contageous

Question 13

Compared to other mydriatic agents, how to cycloplegic drops effect the eye?
A. dilates the pupil
B. constricts the pupil
C. paralyzes accommodation
D. numb the eye

Pharmacology 3%

Answer 13

C. paralyzes accommodation

“plegic” means to paralyze

Question 14

The main principle of ____________ is that only sterile surfaces may touch each other
A. universal precaution
B. the aseptic technique
C. personal protection
D. cleanliness

Surgical Assisting 4%

Answer 14

B. the aseptic technique

Question 15

Due to its shatter-resistant and light weight quality, what material is used in safety glasses?
A. chemically hardened lenses
B. CR39 plastic
C. polycarbonate plastic
D. polyurethane plastic

Patient Services and Education 14%

Answer 15

C. polycarbonate plastic

Question 16

What is the location called where the nasal optic nerve fibers cross in the visual pathway?
A. lateral geniculate body
B. visual cortex
C. optic chiasm
D. optic tract

General Medical Knowledge 14%

Answer 16

C. optic chiasm

Question 17

What is the focal length of a 4 D lens?
A. 33 cm or 0.33 m
B. 50 cm or 0.50 m
C. 100 cm or 1 m
D. 25 cm or 0.25 m

Optics and Spectacles 2%

Answer 17

D. 25 cm or 0.25 m

F=1/4

F=1/D (F is focal length in meters; D is dioptor power of lens)

The stronger the lens, the shorter the focal length

Question 18

There are generally three variables printed on a contact lens box; “Dia”, “BC”, and “D”. What does the “D” stand for?
A. distance of pupils
B. diopter power
C. Dk value (permeability)
D. differential

Contact Lenses 2%

Answer 18

B. diopter power

“Dia” is diameter and “BC” is base curve

Question 19

The purpose of using scanning laser devices, i.e. OCT or HRT, to image and evaluate the retina is to
A. generate normative data
B. detect subtle changes in the retinal structure
C. detect subtle visual field defects
D. perform a cell count of the retina

Ophthalmic Imaging 5%

Answer 19

B. detect subtle changes in the retinal structure

Question 20

Indocyanine green (ICG) angiography highlights details of what vascular system?
A. iris vasculature
B. optic nerve vasculature
C. choroidal vasculature
D. retinal vasculature

Photography and Videography 5%

Answer 20

C. choroidal vasculature

Question 21

How often should an applanation tonometer be calibrated?
A. every week
B. every month
C. every 6 months
D. every year

Equipment Maintenance and Repair 2%

Answer 21

B. every month

A calibration bar is used to see how much the tip moves at 0, 20, and 60

Question 22

Typically reading material given to a patient should be at what comprehension level?
A. grade 3-5
B. grade 4-6
C. grade 6-8
D. grade 10-12

Medical Ethics, Legal, and Regulatory Issues 4%

Answer 22

C. grade 6-8

Most people have completed school through these grade levels.