COA 2 Flashcards
A patient’s history of pain and low vision could be attributed to
A. acute glaucoma
B. strabismus
C. stroke
D. subconjunctival hemorrhage
History and Documentation 5%
A. acute glaucoma
Which of the following is a symptom?
A. flakes on the lashes
B. flashes of light
C. red eye
D. swollen lid
History and Documentation 5%
B. flashes of light
Under what heading should the onset of current symptoms be recorded?
A. current medications
B. past history
C. physical signs
D. present illness
History and Documentation 5%
D. present illness
Which is the main reason for the patient’s visit to the ophthalmologist recorded?
A. chief complaint
B. family history
C. past medical history
D. past ocular history
History and Documentation 5%
A. chief complaint
Symptoms associated with a red, irritated, bloodshot eye are MOST likely due to
A. retinal detachment
B. cataracts
C. conjunctivitis
D. open-angle glaucoma
History and Documentation 5%
C. conjunctivitis
What is the term used to refer to symptoms due to uncorrected refractive error?
A. ametropia
B. asthenopia
C. esotropia
D. anisometropia
History and Documentation 5%
A. ametropia
What is an important question to ask a patient that complains of a “red-eye”?
A. do you have blurred vision?
B. do you see flashing lights?
C. do you wear glasses?
D. do you see floaters?
History and Documentation 5%
A. do you have blurred vision?
Which part of the patient examination is performed by asking specific questions in an orderly sequence?
A. history
B. diagnosis
C. measurement
D. assessment
History and Documentation 5%
A. history
Which of the following conditions is NOT hereditary?
A. migraines
B. diabetes
C. nystagmus
D. conjunctivitis
History and Documentation 5%
D. conjunctivitis
History and Documentation 5%
What is a probable cause of blurred distance vision that is improved by squinting?
A. esotropia
B. glaucoma
C. uncorrected myopia
D. uncorrected presbyopia
Visual Assessment 6%
C. uncorrected myopia
Which of the following equivalences is correct?
A. 5/200 is equivalent to 20/400
B. 6/60 is equivalent to 3/120
C. 10/200 is equivalent to 20/100
D. 20/200 is equivalent to 10/100
Visual Assessment 6%
D. 20/200 is equivalent to 10/100
Which of the following is a measure of distance of visual acuity?
A. 20/20
B. 40 arc seconds
C. D-15
D. Jaeger 2
Visual Assessment 6%
A. 20/20
20/60 visual acuity means the patient sees a test object at
A. 6 meters that someone with 20/20 vision would see at 20 feet
B. 20 feet that someone with 20/20 vision would see at 60 feet
C. 20 feet that someone with 20/20 vision would see at 60 meters
D. 60 feet that someone with 20/20 vision would see at 20 feet
Visual Assessment 6%
B. 20 feet that someone with 20/20 vision would see at 60 feet
An effective means of estimating visual acuity in infants would be to use…
A. an amblyoscope
B. preferential looking
C. prism bars
D. a Snellen chart
Visual Assessment 6%
B. preferential looking
In an industrial injury, in which the patient complains of a foreign body sensation, a 20/60 vision is recorded by the assistant. What is the next step the assistant should take?
A. instill a fluorescein dye
B. patch the eye
C. return the patient to the waiting room
D. try a pinhole test to see if vision will improve
Visual Assessment 6%
D. try a pinhole test to see if vision will improve
Measuring visual acuity with a potential acuity meter useful in patients with
A. glaucoma
B. cataracts
C. optic neuritis
D. age-related macular degeneration
Visual Assessment 6%
B. cataracts
Near vision charts should be held how many inches from the eye?
A. 10-12
B. 14-16
C. 18-20
D. 22-24
Visual Assessment 6%
B. 14-16
If poor vision is simply due to refractive error, the acuity should improve with use of a(n)
A. placido disc
B. pinhole disc
C. occluder over non-dominant eye
D. occluder over dominant eye
Visual Assessment 6%
B. pinhole disc
What is the recommended distance used for assessing distance acuity?
A. 3’
B. 10’
C. 20’
D. 40’
Visual Assessment 6%
C. 20’
If a person is able to clearly see an object at 20 feet that can be seen at 80 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
Visual Assessment 6%
D. 20/80
Which statement correctly refers to the letters on the Snellen chart?
A. because they subtend the same amount of arc, each letter is equally recognizable
B. even though they each subtend the same amount of arc, some letters are easier to recognize than others
C. different letters subtend different amounts of arc, yet each letter is equally recognizable
D. different letters subtend different amounts of arc, thus some letters are easier to recognize than others
Visual Assessment 6%
B. even though they each subtend the same amount of arc, some letters are easier to recognize than others
What is the central field of vision?
A. a 10 degree area of vision around the macula
B. a 25-30 degree area of vision around the blind spot
C. a 25-30 degree area of vision around the fixation point
D. the area where the visual fields of the two eyes overlap
Visual Field Testing 4%
C. a 25-30 degree area of vision around the fixation point
Which of the following is the BEST method for kinetic testing of the central visual field?
A. amsler grid
B. confrontation testing
C. harrington-Flocks screener
D. tangent screen
Visual Field Testing 4%
D. tangent screen
If a lesion is more anterior and is located toward one side, that may affect the junctional area involving the optic nerve of one eye and the inferior nasal fibers of the other eye. The eye on the side of the lesion will have what type of optic defect?
A. Bjerrum scotoma
B. central scotoma
C. centrocecal scotoma
D. pericentral scotoma
Visual Field Testing 4%
B. central scotoma
The autoplot tangent screen measures the
A. supra threshold kinetic field
B. supra threshold static field
C. threshold kinetic field
D. threshold static field of vision
Visual Field Testing 4%
A. supra threshold kinetic field
Visual field loss due to optic nerve cupping is related to which condition?
A. glaucoma
B. tropia
C. phoria
D. nystagmus
Visual Field Testing 4%
A. glaucoma
Which type of perimetry involves a moving target?
A. threshold
B. kinetic
C. static
D. automatic
Visual Field Testing 4%
B. kinetic
What is the term for an area of complete or parital blindness in an otherwise normail visual field?
A. Scotoma
B. Sunechiae
C. Stye
D. Stroma
Visual Field Testing 4%
A. Scotoma
Visual Field Testing 4%
Marcus-Gunn pupil
A. has diminished pupil reaction to light
B. is fixed and dilated
C. responds slowly to light
D. shows asymptomatic anisocoria
Pupil Assessment 3%
A. has diminished pupil reaction to light
When performing the swinging flashlight test on a patient with a relative afferent pupillary defect (Marcus-Gunn pupil) in the left eye, the expected findings would be a(n)…
A. constriction of both pupils with direct light OD and dilation of both pupils when the light “swings” to OS
B. constriction of both pupils with direct light OD and hippus movement when the light “swings” to OS
C. constriction of the left pupil in bright light and dilation of both pupils when the light “swings” to OD
D. initial dilation followed by constriction with direct light OD and total dilation OU when the light “swings” to OS
Pupil Assessment 3%
A. constriction of both pupils with direct light OD and dilation of both pupils when the light “swings” to OS
Shining a bright light into one eye normally causes both pupils to constrict equally. The pupillary reaction in the illuminated eye is called
A. indirect light reflex
B. consensual light reflex
C. direct light reflex
D. near light reflex
Pupil Assessment 3%
C. direct light reflex
Consensual light reflex in the right eye results in
A. right pupil constriction
B. right pupil dialtion
C. left pupil constriction
D. left pupil dilation
Pupil Assessment 3%
A. right pupil constriction
What is the term for pupillary constriction?
A. mydriasis
B. miosis
C. cycloplegia
D. anisocoria
Pupil Assessment 3%
B. miosis
If the amount of light information transmitted from the brain to one eye differs from that of the other eye, the patient has a(n)
A. afferent pupillary defect
B. Adie’s pupil
C. tonic pupil
D. third nerve palsy
Pupil Assessment 3%
A. afferent pupillary defect
What is the MAIN advantage of the applanation tonometer compared with the indentation tonometer?
A. applanation is a more modern technique
B. applanation tonometry causes less patient discomfort
C. it is more accurate
D. the intraocular pressure change is larger as compared to indentation
Tonometry 4%
C. it is more accurate
In applanation tonometry, excessive width of the mires can indicate…
A. improper alignment of the prism
B. need for recalibration of instrument
C. too little fluorescein
D. too much fluorescein
Tonometry 4%
D. too much fluorescein
What drug is used during tonometry to anesthetize the eye?
A. proparacaine
B. paredrine
C. phenylephrine
D. tropicamide
Tonometry 4%
A. proparacaine
Killing of the HIV and other viruses on the applanation prism is BEST accomplished by soaking in…
A. diluted betadine
B. gentamicin solution
C. isopropyl alcohol
D. sodium hypochlorite (Chlorine Bleach)
Tonometry 4%
D. sodium hypochlorite (Chlorine Bleach)
Which of the following statements best describes the process used to check the accuracy of the Goldmann applanation tonometer?
A. It should be calibrated daily for reliable results
B. It can be performed in the office with a calibrating rod
C. It can only be handled at the factory or instrument repair shop
D. It is accomplished with a test sphere with a standard tension of 20 mm Hg
Tonometry 4%
B. It can be performed in the office with a calibrating rod
Checking the calibration monthly is sufficient
Which type of tonometer is mounted on a slit lamp?
A. applanation
B. indentation
C. Perkins
D. air puff
Tonometry 4%
A. applanation
The calibration of the Goldmann applanation tonometer should be checked at which settings?
A. 0, 1, 2
B. 0, 2, 4
C. 0, 2, 6
D. 0, 4, 8
Tonometry 4%
C. 0, 2, 6
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
Tonometry 4%
B. 3.0 mm
What is the number of a target illuminator replacement bulb?
A. 12419
B. 19241
C. 11249
D. 14129
Tonometry 4%
A. 12419
What type of corneal astigmatism does a keratometry reading of 42.25/44.75 x 090 indicate?
A. None
B. Oblique
C. With-the-rule
D. Against-the-rule
Keratometry 2%
C. With-the-rule
ATR = Steeper @180 (bowtie)
WTR = Steeper @ 90 (tie)
The purpose of keratometry is to measure the
A. thickness of the corneal stroma
B. curvature of the anterior corneal surface
C. diameter of the horizontal cornea
D. diameter of the vertical cornea
Keratometry 2%
B. curvature of the anterior corneal surface
Which process is useful for measiring corneal astigmatism?
A. Lensometry
B. Keratometry
C. Tonometry
D. Biometry
Keratometry 2%
B. Keratometry
The results of keratometry can be expressed in
A. cubic mm
B. mmHg
C. centimeters
D. diopters
Keratometry 2%
D. diopters
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
Ocular Motility 4%
B. The cover-uncover test
What is the best way to perform the Worth 4-Dot test on a child?
A. Tell the child there are four 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
Ocular Motility 4%
C. Ask which color the child sees
Evaluating the range and symmetry of motion of both eyes together is known as…
A. Ductions
B. Versions
C. Phorias
D. Tropias
Ocular Motility 4%
B. Versions
Stereoacuity testing is indicated if a patient has…
A. Retinitis
B. A phoria
C. A chalazion
D. Hyperplasia
Ocular Motility 4%
B. A phoria
Which tool is a series of red cylinders to assess phoria?
A. Worth 4-dot
B. Ishihara plates
C. Maddox rod
D. Marcus Gunn
Ocular Motility 4%
C. Maddox rod
Which test uses prisms to center the corneal reflex?
A. Hess
B. Worth 4-dat
C. Hirschberg
D. Krimsky
Ocular Motility 4%
D. Krimsky
How many nerves innervate the six extraocular muscles?
A. 1
B. 2
C. 3
D. 4
Ocular Motility 4%
C. 3
A patient’s prescription from a referring doctor is written in minus cylinder notation, while your ophthalmologist works in plus cylinder. Transpose the following prescription: +2.25-0.75x165, +3.75-1.25x003
A. +1.50+0.75x075, +2.50+1.25x093
B. +1.50+0.75x165, +2.50+1.25x003
C. +1.50-0.75x165, +2.50-1.25x003
D. -1.50+0.75x075, -3.75+1.25x093
Lensometry 3%
A. +1.50+0.75x075, +2.50+1.25x093
On the back of a frame are a few figures such as 46 X 22. What do these numbers represent?
A. Bridge and lens size
B. Pupillary distance and segment height
C. Lens and bridge size
D. Segment height and pupillary distance
Lensometry 3%
C. Lens and bridge size
The lens size is larger than bridge size
What is the ONLY accurate method for measuring pupillary distance?
A. Pupil gauge
B. Light reflex method
C. Ruler
D. Dark reflex method
Lensometry 3%
B. Light reflex method
A lens with the focal length of 2 meters has a power of
A. 0.50 D
B. 1.00 D
C. 2.00 D
D. 5.00 D
Lensometry 3%
A. 0.50 D
The stronger the lens, the shorter the focal length
D = 1/F (in meters)
D = 1/2
Ex: Focal length is 20 cm (1/5th of a meter or 0.20 meters)
D = 1/.20 = 5 D
What part of the spectacle frame connects the two lenses?
A. Temple
B. Cover
C. Rim
D. Bridge
Lensometry 3%
D. Bridge
The measurement used to determine the distance between the optical centers of spectacle lenses is the
A. pupillary distance
B. axial length
C. vertex distance
D. refractive error
Lensometry 3%
A. pupillary distance
Visual acuity of 6/12 is equivalent to
A. 20/20
B. 20/30
C. 20/40
D. 20/50
Refraction, Retinoscopy, and Refinement 5%
C. 20/40
What is the principle reason for the routine preference of subjective over objective refraction?
A. Automated retinoscopy systems make refraction efficient
B. Jackson’s cross cylinder is easy to use
C. Sphero-cylinder evaluation is easy
D. The patient’s preference is considered the process
Refraction, Retinoscopy, and Refinement 5%
D. The patient’s preference is considered the process
The fact that most glasses have a downward tilt to minimize oblique astigmatism is called…
A. Interpupillary distance
B. Pantoscopic tilt
C. Oblique astigmatism
D. Image displacement
Refraction, Retinoscopy, and Refinement 5%
B. Pantoscopic tilt (or angle)
What is the result of a loss of accommodation?
A. Myopia
B. Hyperopia
C. Presbyopia
D. Amblyopia
Refraction, Retinoscopy, and Refinement 5%
C. Presbyopia
What is the ocular structure with the greatest refractive power?
A. Cornea
B. Lens
C. Pupil
D. Retina
Refraction, Retinoscopy, and Refinement 5%
A. Cornea
What test illuminates the screen with a filter that is red on one side and green on the other?
A. Worth 4-dot
B. Ishihara
C. Duochrome
D. Maddox
Refraction, Retinoscopy, and Refinement 5%
C. Duochrome
The distance from the anterior surface of the eye to the back surface of the spectacle lens in the
A. base curve
B. pipillary distance
C. lens distance
D. vertex distance
Refraction, Retinoscopy, and Refinement 5%
D. vertex distance
Retinoscopy is an example of what type of refractometry?
A. Objective
D. Subjective
C. Immediate
D. Latent
Refraction, Retinoscopy, and Refinement 5%
A. Objective
What is the term for the “bending of light”?
A. Dispersion
B. Refraction
C. Emergence
D. Incidence
Refraction, Retinoscopy, and Refinement 5%
B. Refraction
The area between the two focal points of a spheroculindracial lens is call the Conoid of
A. Schlemm
B. Streit
C. Schiotz
D. Sturm
Refraction, Retinoscopy, and Refinement 5%
D. Sturm
Axial length is provided by which measurement?
A. Precorneal tear film to the posterior vitreous face
B. Anterior corneal surface to the macula
C. Anterior corneal surface to the optic disc
D. Anterior pole to the posterior pole
Biometry 3%
B. Anterior corneal surface to the macula
How are ultrasound biometric measurements obtained?
A. The anterior lens spike should be lower than posterior lens spike
B. The patient must have good vision
C. The probe should be aligned along the visual axis of the eye
D. The biometrist must press firmly on the globe
Biometry 3%
C. The probe should be aligned along the visual axis of the eye
What A-scan measurements is most important in determining intraocular lens (IOL) power?
A. Corneal curvature
B. Anterior chamber depth
C. Lens thickness
D. Axial length
Biometry 3%
D. Axial length
What is the most commonly used technique to perform a B-scan?
A. Slit lamp
B. Handheld probe
C. Computed Topography (CT)
D. Magnetic Resonance Imaging (MRI)
Biometry 3%
B. Handheld probe
Axial length measurements should be rechecked if there is a difference between the two eyes of more than
A. 0.1mm
B. 0.3mm
C. 1mm
D. 3mm
Biometry 3%
B. 0.3mm
0.3 mm is about ~1D worth of power, which is unusual between the eyes.
Schirmer testing is frequently used for a patient who is considering
A. new spectacles
B. cataract surgery
C. contact lenses
D. muscle recession
Supplemental Skills 3%
C. Contact lenses
Titmus testing evaluates stereopsis by assessing if certain portions of the images are
A. elevated
B. darker
C. clear
D. not visible
Supplemental Skills 3%
A. Elevated
What is the correct abbreviation used for the unit “gram”?
A. g
B. gt
C. gr
D. gm
Supplemental Skills 3%
A. g