COT Review- Visual Fields (A review for the Certified
Ophthalmic Technician (COT) exam focusing on the visual
fields portion) Questions With Complete Solutions
"At threshold" means the patient responds to a given stimulus in
the same area: Correct Answers 50% of the time.
(In automated perimetry) The decibel scale is dependent on:
a.) the maximum intensity of that machine's stimulus
b.) Room lighting during visual field testing
c.) The patient's contrast sensitivity
d.) The stimulus color Correct Answers A. The maximum
intensity of the machine's stimulus
(In automated perimetry) The decibel unit is considered arbitrary
because: Correct Answers It can differ from one machine to
another.
(In automated perimetry) The higher the decibel rating: Correct
Answers The dimmer the light intensity. The decibel unit
corresponds to how much the stimulus was dimmed to reach
threshold.
A patient might not respond to a suprathreshold stimuli:
a.) By chance
b.) Because it is too dim
c.) Because it is too small
d.) Because it is too large Correct Answers A. By chance
A tangent screen and Autoplot are used to map the
______________ degrees. Correct Answers The central 30°
, Accurately determining threshold requires single/multiple
testing of a point. Correct Answers Multiple testing of a point.
Advantages of the Autoplot include all of the following except:
a.) Fixation is assisted by use of the chin rest
b.) It is portable
c.) Size and intensity of the test are easily changed
d.) Testing distance can be varied Correct Answers d.) Testing
distance can be varied
Advantages of the Goldmann perimeter include the following
except:
a.) Fixation can be monitored easily
b.) It's portability
c.) It's versatility in kinetic testing
d.) The target can be projected and the chart marked
simultaneously. Correct Answers b.) It's portability. That thing
is a beast.
After leaving the optic tract, the nerve fibers bundle together at a
"relay station" known as the: Correct Answers Lateral
geniculate body
After the nerve fibers cross at the chiasm, they pass through:
Correct Answers The optic tract
An advantage to manual perimetry over automated perimetry is
that manual perimetry:
a.) Permits testing of preselected points
b.) Permits testing of the entire VF
Ophthalmic Technician (COT) exam focusing on the visual
fields portion) Questions With Complete Solutions
"At threshold" means the patient responds to a given stimulus in
the same area: Correct Answers 50% of the time.
(In automated perimetry) The decibel scale is dependent on:
a.) the maximum intensity of that machine's stimulus
b.) Room lighting during visual field testing
c.) The patient's contrast sensitivity
d.) The stimulus color Correct Answers A. The maximum
intensity of the machine's stimulus
(In automated perimetry) The decibel unit is considered arbitrary
because: Correct Answers It can differ from one machine to
another.
(In automated perimetry) The higher the decibel rating: Correct
Answers The dimmer the light intensity. The decibel unit
corresponds to how much the stimulus was dimmed to reach
threshold.
A patient might not respond to a suprathreshold stimuli:
a.) By chance
b.) Because it is too dim
c.) Because it is too small
d.) Because it is too large Correct Answers A. By chance
A tangent screen and Autoplot are used to map the
______________ degrees. Correct Answers The central 30°
, Accurately determining threshold requires single/multiple
testing of a point. Correct Answers Multiple testing of a point.
Advantages of the Autoplot include all of the following except:
a.) Fixation is assisted by use of the chin rest
b.) It is portable
c.) Size and intensity of the test are easily changed
d.) Testing distance can be varied Correct Answers d.) Testing
distance can be varied
Advantages of the Goldmann perimeter include the following
except:
a.) Fixation can be monitored easily
b.) It's portability
c.) It's versatility in kinetic testing
d.) The target can be projected and the chart marked
simultaneously. Correct Answers b.) It's portability. That thing
is a beast.
After leaving the optic tract, the nerve fibers bundle together at a
"relay station" known as the: Correct Answers Lateral
geniculate body
After the nerve fibers cross at the chiasm, they pass through:
Correct Answers The optic tract
An advantage to manual perimetry over automated perimetry is
that manual perimetry:
a.) Permits testing of preselected points
b.) Permits testing of the entire VF
