COA Preview Flashcards
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%
C. the reason causing the patient to seek care
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%
D. the patient has a refractive error
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%
D. 20°
It measures 10° from the center to each side and up and down
What is the term meaning unequal pupil size?
A. anisocoria
B. anisometropia
C. anisochromia
D. aniseikonia
Pupil Assessment 3%
A. anisocoria
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%
C. when the inner ends of the mires meet
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%
B. approximately the central 3 mm
AKA the central Cap of the cornea, topography measures the whole cornea
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%
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
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%
B. changing the axis 90°
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%
D. they are used in the treatment of myopia
False!
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%
A. 3 D
The measurements should always be redone to confirm the difference
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%
C. inner surface of the cornea and iris
Which of the following microorganisms are responsible for epidemic keratoconjunctivitis (EKC)?
A. Staphylococcus aureus
B. Adenovirus
C. Treponema
D. Streptococcus pneumoniae
Microbiology 3%
B. Adenovirus
AKA “Pink Eye”
Same as the common cold and is highly contageous
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%
C. paralyzes accommodation
“plegic” means to paralyze
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%
B. the aseptic technique
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%
C. polycarbonate plastic
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%
C. optic chiasm
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%
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
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%
B. diopter power
“Dia” is diameter and “BC” is base curve
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%
B. detect subtle changes in the retinal structure
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%
C. choroidal vasculature
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%
B. every month
A calibration bar is used to see how much the tip moves at 0, 20, and 60
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%
C. grade 6-8
Most people have completed school through these grade levels.
