Scan Me If You Can
A statement that describes the BEST use of A-scan ultrasonography would be to
A. detect a choroidal detachment.
B. detect a retinal detachment.
C. define the size and location of intraocular masses.
D. depict a two-dimensional image of the orbit and globe.
C. define the size and location of intraocular masses.
The three principle types of ophthalmic imaging are:
A. specular, pachymetry, and contrast sensitivity.
B. external, slit lamp, and fundus.
C. slit lamp, pachymetry, and ultrasonography.
D. contrast sensitivity, viewing blockages, and viewing vessels.
B. external, slit lamp, and fundus.
Measuring visual acuity with a potential acuity meter is useful in patients with:
A. glaucoma
B. cataracts
C. optic neuritis
D. Age-Related Macular Degeneration.
B. cataracts
Stereoacuity testing is indicated if a patient has:
A. Retinitis
B. a phoria
C. a chalazion
D. hyperplasia
B. a phoria
A. The eyes cross in
B. The eyes turn out
C. 1 eye goes down
D. 1 eye goes up
A. The eyes cross in
What is the MOST commonly used technique to perform a B-scan?
A. Slit lamp
B. Handheld probe
C. Compound topography (CT)
D. Magnetic Resonance Imaging (MRI)
B. Handheld probe
To photograph the posterior pole, the center of focus is:
A. the macula.
B. the optic disc.
C. between the macula and the optic disc.
D. between the optic disc and the nasal arcades.
C. between the macula and the optic disc.
A. Objective
B. Subjective
C. Immediate
D. Latent
A. Objective
A. The alternating cover test with prism
B. The cover-uncover test
C. The Krimsky test
D. The Hirschberg test
B. The cover-uncover test
Of the following, which are part of the 4 rectus muscles. Choose all the apply:
A. inferior
B. inferior oblique
C. superior
D. lateral
A. inferior
C. superior
D. lateral
Which type of imaging provides a cross-sectional view of the retina that is useful in evaluating glaucoma?
A. Optical Coherence Tomograpy
B. Indocyanine Green Photography
C. Wavefront analysis
D. Scanning laser interferometry
A. Optical Coherence Tomograpy
The purpose of glare testing (BAT), is to determine if visual acuity varies with different
A. refractive errors.
B. pinhole sizes.
C. dark adaptations.
D. lighting conditions.
D. lighting conditions.
What is the principle reason for the routine preference of 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.
D. The patient's preference is considered in the process.
What is the term for "eye up"?
A. Hypotropia
B. Esotropia
C. Hypertropia
D. Exotropia
C. Hypertropia
True or false:
Horizontal movement is lateral and medial (abduction and adduction)
True
What A-scan measurement is MOST important in determining intraocular lens (IOL) power?
A. Corneal culture
B. Anterior chamber depth
C. Lens thickness
D. Axial length
D. Axial length
Axial length is provided by which measurement?
A. Precorneal tear film to the posterior face
B. Anterior corneal surface to the macula
C. Anterior corneal surface to the optic disc
D. Anterior pole to the posterior pole
B. Anterior corneal surface to the macula
A fluorescein angiogram is used for which of the following?
A. Counting epithelial cells
B. Measuring the eye's contrast sensitivity
C. Viewing detail, such as blockages in fundus blood vessels
D. Estimating the cornea's ability to withstand stress of an operation
C. Viewing detail, such as blockages in fundus blood vessels
A latent deviation that can only be observed when binocular fusion is disrupted is called a(n):
A. tropia
B. hemianopia
C. phoria
D. ametropia
C. phoria
Which of the following is an example of a corneal light reflex test used for strabismus detection?
A. Worth 4-dot
B. Hirschberg test
C. Krimsky test
D. Cover-Uncover test
B. Hirschberg test
In A-scan biometry, which ocular measurement provides the axial length of the globe?
A. Anterior corneal surface to anterior vitreous face
B. The distance between corneal surface and the retinal surface
C. Pre-corneal tear film to the posterior pole
D. Pre-corneal tear film to the posterior face
B. The distance between corneal surface and the retinal surface
What imaging technique does NOT provide a color-coded map?
A. Indocyanine Green Chorioangiography (ICG)
B. Optical Coherence Tomography (OCT)
C. Scanning Laser Polarimeter (Gdx)
D. Heidelberg Retinal Tomography (HRT)
A. Indocyanine Green Chorioangiography (ICG
Advances in digital imaging technology facilitated the practical use of what type of dye?
A. Trypan blue
B. Rose bengal
C. Indocyanine green
D. Gentian violet
C. Indocyanine green
Evaluating the range and symmetry of motion of both eyes together is known as:
A. ductions
B. versions
C. phorias
D. tropias
B. versions
How many positions of gaze are there where 1 muscle is the dominant mover of the eye?
A. 4
B. 7
C. 3
D. 6
D. 6
Which ocular tissue produces A-scan spikes?
A. Lens
B. Choroid
C. Optic disc
D. Vitreous
A. Lens
How are ultrasound biometric measurements obtained?
A. The anterior lens spike should be lower than the 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.
C. The probe should be aligned along the visual axis of the eye.
Which of the following has been designed to measure visual acuity by bypassing optical medical defects?
A. ETDRS acuity charts
B. Snellen charts
C. HOTV
D. Laser interferometry
D. Laser interferometry
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 then the other.
C. Ask which color the child sees.
D. Give the child the flashlight before they put the glasses on.
C. Ask which color the child sees.
When prism is detected, what 2 items are used to find the amount of deviation?
A. cover-uncover test and prisms
B. Hirschberg test
C. prisms and alternate cover test
D. Worth 4-dot
C. prisms and alternate cover test