OPHTHALMIC TECHNICIAN UPDATED EVALUATION
EXAM QUESTIONS AND ANSWERS SURE A+
✔✔(Chapter 10) When undergoing A-scan ultrasonography prior to cataract surgery,
the patient looks to the side and the axial length measured is 0.30 mm shorter than the
patient's apical cornea-to-retina distance. How does this affect the intraocular lens (IOL)
calculation? - ✔✔The IOL calculation will be 1.00 D more than the patient needs
✔✔(Chapter 10) What does pachymetry measure? - ✔✔Thickness of the cornea
✔✔(Chapter 10) The ocular media includes what transparent structures? - ✔✔Cornea,
lens, vitreous
✔✔(Chapter 10) Fluorescein angiography is most valuable for evaluating what
condition? - ✔✔Abnormalities in ocular blood vessels
✔✔(Chapter 10) What does corneal topography measure? - ✔✔Curvature of the cornea
✔✔(Chapter 10) What test is used to count endothelial cells of the cornea? -
✔✔Specular microscopy/photography
✔✔(Chapter 10) What device measures the effect of media opacity on visual acuity and
does not require a clearer zone within the media for assessment? - ✔✔Interferometer
, ✔✔(Chapter 10) Compression of the cornea during A-scan ultrasonography may result
in what kind of measurement error and intraocular lens outcome? - ✔✔Shorter than
actual axial length measurement, with a resulting myopic postoperative refractive error
✔✔(Chapter 10) What does optical coherence tomography measure? - ✔✔Ocular
anatomy
✔✔(Chapter 10) What can A-scan ultrasonography be used for? - ✔✔Measuring the
axial length of the globe
✔✔(Chapter 10) What is an acuity chart printed in faint gray rather than in sharp black
on white useful for measuring? - ✔✔Contrast Sensitivity
✔✔(Chapter 10) Why should a fluorescein or indocyanine angiogram only be performed
when a physician and emergency equipment are available? - ✔✔Risk of anaphylaxis
✔✔(Chapter 10) What statement applies to commonly used applanation tonometers? -
✔✔An abnormally thick cornea produces an artificially high intraocular pressure reading
✔✔(Chapter 10) B-scan ultrasonography is useful for evaluating what condition? -
✔✔Media opacities
✔✔(Chapter 10) What is the most common complication of fluorescein angiography? -
✔✔Nausea
✔✔(Chapter 10) How does an interferometer measure visual acuity potential? -
✔✔Projects lines onto the macula
✔✔(Chapter 11) What is an advantage of Goldmann kinetic perimetry? - ✔✔It covers
the entire visual field
✔✔(Chapter 11) What field of vision is affected by a defect in the inferior temporal
retina? - ✔✔Superior Nasal
✔✔(Chapter 11) Where does the physiologic blind spot appear on visual field charts? -
✔✔In the temporal visual field
✔✔(Chapter 11) Why should the size of a patient's pupil be recorded at the time of
perimetry? - ✔✔A pupil measuring 2 mm or less results in contraction of the visual field.
✔✔(Chapter 11) In this visual field report of both eyes, the result depicted is most often
due to what condition? - ✔✔Lesion or tumor near the optic chiasm
EXAM QUESTIONS AND ANSWERS SURE A+
✔✔(Chapter 10) When undergoing A-scan ultrasonography prior to cataract surgery,
the patient looks to the side and the axial length measured is 0.30 mm shorter than the
patient's apical cornea-to-retina distance. How does this affect the intraocular lens (IOL)
calculation? - ✔✔The IOL calculation will be 1.00 D more than the patient needs
✔✔(Chapter 10) What does pachymetry measure? - ✔✔Thickness of the cornea
✔✔(Chapter 10) The ocular media includes what transparent structures? - ✔✔Cornea,
lens, vitreous
✔✔(Chapter 10) Fluorescein angiography is most valuable for evaluating what
condition? - ✔✔Abnormalities in ocular blood vessels
✔✔(Chapter 10) What does corneal topography measure? - ✔✔Curvature of the cornea
✔✔(Chapter 10) What test is used to count endothelial cells of the cornea? -
✔✔Specular microscopy/photography
✔✔(Chapter 10) What device measures the effect of media opacity on visual acuity and
does not require a clearer zone within the media for assessment? - ✔✔Interferometer
, ✔✔(Chapter 10) Compression of the cornea during A-scan ultrasonography may result
in what kind of measurement error and intraocular lens outcome? - ✔✔Shorter than
actual axial length measurement, with a resulting myopic postoperative refractive error
✔✔(Chapter 10) What does optical coherence tomography measure? - ✔✔Ocular
anatomy
✔✔(Chapter 10) What can A-scan ultrasonography be used for? - ✔✔Measuring the
axial length of the globe
✔✔(Chapter 10) What is an acuity chart printed in faint gray rather than in sharp black
on white useful for measuring? - ✔✔Contrast Sensitivity
✔✔(Chapter 10) Why should a fluorescein or indocyanine angiogram only be performed
when a physician and emergency equipment are available? - ✔✔Risk of anaphylaxis
✔✔(Chapter 10) What statement applies to commonly used applanation tonometers? -
✔✔An abnormally thick cornea produces an artificially high intraocular pressure reading
✔✔(Chapter 10) B-scan ultrasonography is useful for evaluating what condition? -
✔✔Media opacities
✔✔(Chapter 10) What is the most common complication of fluorescein angiography? -
✔✔Nausea
✔✔(Chapter 10) How does an interferometer measure visual acuity potential? -
✔✔Projects lines onto the macula
✔✔(Chapter 11) What is an advantage of Goldmann kinetic perimetry? - ✔✔It covers
the entire visual field
✔✔(Chapter 11) What field of vision is affected by a defect in the inferior temporal
retina? - ✔✔Superior Nasal
✔✔(Chapter 11) Where does the physiologic blind spot appear on visual field charts? -
✔✔In the temporal visual field
✔✔(Chapter 11) Why should the size of a patient's pupil be recorded at the time of
perimetry? - ✔✔A pupil measuring 2 mm or less results in contraction of the visual field.
✔✔(Chapter 11) In this visual field report of both eyes, the result depicted is most often
due to what condition? - ✔✔Lesion or tumor near the optic chiasm
