CERTIFIED OPHTHALMIC
TECHNICIAN EXAM REVIEW - COT
OPHTHALMOLOGY CHAPTER 4 VISUAL
FIELDS EXAM QUESTIONS AND
ANSWERS. VERIFIED 2025/2026.
Each mm on the retina is equal to how many degrees on the visual field?
a) 2 degrees
b) 3 degrees
c) 4 degrees
d) 5 degrees - ANS D
The light receptor cells of the retina are the:
a) Retinal pigment epithelium
b) Rods and cones
c) Bipolar cells
d) Ganglion cells - ANS B
An object on the patient's right will be perceived by the patient's:
a) Temporal retina OU
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,b) Nasal retina OU
c) temporal retina OS and nasal retina OD
d) Foveae OU - ANS C
The nerve fibers are axon extensions of the:
a) Rods and cones
b) Ganglion cells
c) Bipolar layer
d) Mueller cells - ANS B
The autonomic pattern of the nerve fibers produces visual field defects:
a) That are total blind spots
b) That correspond to the location of the rods and cones
c) That correspond to the location of the nerve fibers
d) That respond well to treatment - ANS C
The "blind spot" as plotted on a visual field test corresponds to:
a) The macula
b) The fovea
c) The optic disk
d) The lamina cribosa - ANS C
The size of the average blind spot is:
a) 5.5 degrees wide and 7.5 degrees high
b) 7.5 degrees wide and 5.5 degrees high
c) 3.5 degrees wide and 5.5 degrees high
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, d) 7.5 degrees wide and 10.5 degrees high - ANS A
On the visual field, the average blind spot is located:
a) 25 degrees temporal to fixation
b) 5 degrees nasal to fixation
c) 15 degrees nasal to fixation
d) 15 degrees temporal to fixation - ANS D
If you increase the visual field testing distance, the blind spot will:
a) Stay the same in both cm and degrees
b) Get larger in both cm and degrees
c) Get larger in cm but remain the same in degrees
d) Stay the same in cm but get larger in degrees - ANS C
At the chiasm:
a) Nerve impulses are magnified before traveling on to the brain
b) Nerve impulses are sorted before traveling on to the brain
c) Nasal nerve fibers from each eye cross over to the opposite side
d) Temporal nerve fibers from each eye cross over to the opposite side - ANS C
The gland that lies in the chiasmal region and can have a direct impact on the visual field is the:
a) Thyroid
b) Pituitary
c) Adrenal cortex
d) Hypothalamus - ANS B
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
TECHNICIAN EXAM REVIEW - COT
OPHTHALMOLOGY CHAPTER 4 VISUAL
FIELDS EXAM QUESTIONS AND
ANSWERS. VERIFIED 2025/2026.
Each mm on the retina is equal to how many degrees on the visual field?
a) 2 degrees
b) 3 degrees
c) 4 degrees
d) 5 degrees - ANS D
The light receptor cells of the retina are the:
a) Retinal pigment epithelium
b) Rods and cones
c) Bipolar cells
d) Ganglion cells - ANS B
An object on the patient's right will be perceived by the patient's:
a) Temporal retina OU
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,b) Nasal retina OU
c) temporal retina OS and nasal retina OD
d) Foveae OU - ANS C
The nerve fibers are axon extensions of the:
a) Rods and cones
b) Ganglion cells
c) Bipolar layer
d) Mueller cells - ANS B
The autonomic pattern of the nerve fibers produces visual field defects:
a) That are total blind spots
b) That correspond to the location of the rods and cones
c) That correspond to the location of the nerve fibers
d) That respond well to treatment - ANS C
The "blind spot" as plotted on a visual field test corresponds to:
a) The macula
b) The fovea
c) The optic disk
d) The lamina cribosa - ANS C
The size of the average blind spot is:
a) 5.5 degrees wide and 7.5 degrees high
b) 7.5 degrees wide and 5.5 degrees high
c) 3.5 degrees wide and 5.5 degrees high
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, d) 7.5 degrees wide and 10.5 degrees high - ANS A
On the visual field, the average blind spot is located:
a) 25 degrees temporal to fixation
b) 5 degrees nasal to fixation
c) 15 degrees nasal to fixation
d) 15 degrees temporal to fixation - ANS D
If you increase the visual field testing distance, the blind spot will:
a) Stay the same in both cm and degrees
b) Get larger in both cm and degrees
c) Get larger in cm but remain the same in degrees
d) Stay the same in cm but get larger in degrees - ANS C
At the chiasm:
a) Nerve impulses are magnified before traveling on to the brain
b) Nerve impulses are sorted before traveling on to the brain
c) Nasal nerve fibers from each eye cross over to the opposite side
d) Temporal nerve fibers from each eye cross over to the opposite side - ANS C
The gland that lies in the chiasmal region and can have a direct impact on the visual field is the:
a) Thyroid
b) Pituitary
c) Adrenal cortex
d) Hypothalamus - ANS B
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
