Certified Ophthalmic Technician Exam Review - COT
Ophthalmology Chapter 4 Visual Fields
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Terms in this set (248)
Each mm on the retina is equal to how many 5 degrees
degrees on the visual field?
The light receptor cells of the retina are the: Rods and cones
An object on the patient's right will be temporal retina OS and nasal retina OD
perceived by the patient's:
The nerve fibers are axon extensions of the: Ganglion cells
The autonomic pattern of the nerve fibers That correspond to the location of the nerve fibers
produces visual field defects:
The "blind spot" as plotted on a visual field test The optic disc
corresponds to:
The size of the average blind spot is: 5.5 degrees wide and 7.5 degrees high
On the visual field, the average blind spot is 15 degrees temporal to fixation
located:
If you increase the visual field testing distance, Get larger in cm but remain the same in degrees
the blind spot will:
what happens at the optic chasm? nasal nerve fibers from each eye cross over to the opposite side
The gland that lies in the chiasm region and can pituitary gland
have a direct impact on the visual field is the:
, The characteristic visual field defect due to a bi temporal hemianopsia (partial blindness in half the visual field)
lesion at the chiasm is:
After nerve fibers cross at the chiasm, they pass Optic tract
next through the:
As the nerve fibers pass through the optic tract, Rotate, thus changing position
they:
After leaving the optic tract, the nerve fibers Lateral geniculate body
bundle together at a "relay station" known as
the:
The layers of the lateral geniculate body Six
nucleus are divided so that half of the layers are
made up of crossed fibers, and half are made
up of uncrossed fibers. How many layers are
there?
Which is not true regarding the nerve fibers the tract continues to rotate
once they exit the lateral geniculate body?
Visual nerve fibers terminate at the: occipital cortex
Visual field defects become more congruous: The closer the lesion is to the occipital cortex
Sensory input (light impulses) on the patient's Right side of the brain
left is transmitted to the:
The boundary of an area that responds to the Isopter
same stimulus intensity is called an(n):
An area inside a visual field isopter that does Scotoma
not respond to any of the targets available on
that particular machine is termed a:
"At threshold" means that the patient responds 50% of the time
to a given stimulus in the same area:
An apostilb (obsolete measure of illumination) is Light intensity
a measurement of:
Ophthalmology Chapter 4 Visual Fields
Save
Terms in this set (248)
Each mm on the retina is equal to how many 5 degrees
degrees on the visual field?
The light receptor cells of the retina are the: Rods and cones
An object on the patient's right will be temporal retina OS and nasal retina OD
perceived by the patient's:
The nerve fibers are axon extensions of the: Ganglion cells
The autonomic pattern of the nerve fibers That correspond to the location of the nerve fibers
produces visual field defects:
The "blind spot" as plotted on a visual field test The optic disc
corresponds to:
The size of the average blind spot is: 5.5 degrees wide and 7.5 degrees high
On the visual field, the average blind spot is 15 degrees temporal to fixation
located:
If you increase the visual field testing distance, Get larger in cm but remain the same in degrees
the blind spot will:
what happens at the optic chasm? nasal nerve fibers from each eye cross over to the opposite side
The gland that lies in the chiasm region and can pituitary gland
have a direct impact on the visual field is the:
, The characteristic visual field defect due to a bi temporal hemianopsia (partial blindness in half the visual field)
lesion at the chiasm is:
After nerve fibers cross at the chiasm, they pass Optic tract
next through the:
As the nerve fibers pass through the optic tract, Rotate, thus changing position
they:
After leaving the optic tract, the nerve fibers Lateral geniculate body
bundle together at a "relay station" known as
the:
The layers of the lateral geniculate body Six
nucleus are divided so that half of the layers are
made up of crossed fibers, and half are made
up of uncrossed fibers. How many layers are
there?
Which is not true regarding the nerve fibers the tract continues to rotate
once they exit the lateral geniculate body?
Visual nerve fibers terminate at the: occipital cortex
Visual field defects become more congruous: The closer the lesion is to the occipital cortex
Sensory input (light impulses) on the patient's Right side of the brain
left is transmitted to the:
The boundary of an area that responds to the Isopter
same stimulus intensity is called an(n):
An area inside a visual field isopter that does Scotoma
not respond to any of the targets available on
that particular machine is termed a:
"At threshold" means that the patient responds 50% of the time
to a given stimulus in the same area:
An apostilb (obsolete measure of illumination) is Light intensity
a measurement of:
