COT Exam Review-Ocular Motility
Questions With All Correct Answers|
2026 Update| Latest Update
Adduction means the eye turns: - Ans--Inward
If the eye is depressed, it is: - Ans--Turning down.
Which muscles only have a primary action? - Ans--The medial rectus and
lateral rectus
Which muscles are elevators? - Ans--The inferior oblique (adduction) and
the superior rectus (abduction)
As a tertiary action, both oblique muscles: - Ans--Abduct
Which muscles are primarily torsional muscles? - Ans--The superior
obliques (intort) and inferior obliques (extort).
Which muscles act to depress the eye? - Ans--The inferior rectus and
superior obliques.
Which muscles adduct the eye as a tertiary action? - Ans--Superior rectus
and inferior rectus.
Which is an example of a yoked muscle?
a.) RLR and LMR
b.) RLR and RMR
c.) RLR and LLR
d.) RIR and LIR - Ans--a.) RLR and LMR
Yoked muscles are muscles in each eye that accomplish the same vertical
movement. RLR and LMR both accomplush right gaze.
,Which muscles are synergistic for horizontal movement with the medial
rectus? - Ans--Superior rectus and inferior rectus. A synergist is a muscle
that assists another muscle in accomplishing a particular direction.
Which muscles are antagonists for depression with the IR? - Ans--The
superior rectus and inferior obliques. An antagonist is the muscle that works
against a particular motion. The SR and IO work against the depression
caused by the IR.
If one eye has an obvious deviation when you perform a simple external
evaluation of the patient, this deviation is a(n): - Ans--Tropia.
A phoria is exhibited when: - Ans--Fusion is disrupted.
The difference between a phoria and an intermittent tropia is: - Ans--
Phorias are usually controlled unless fusion is disrupted and intermittent
tropics are sometimes controlled (sometimes with fusion, sometimes not.)
An adult patient with a tropia has either: - Ans--Diplopia or suppression
Insert illustration 3-1 - Ans--a.) Orthophoria
b.) Esotropia
c.) Hypertropia
d.) Exotropia
e.) Hypotropia
An intermittent horizontal tropia might be aggravated by all the following
except:
a.) Inattention
b.) Reading
c.) Illness
d.) Fatigue - Ans--b.) Reading. Reading would encourage fusion, rather
than disrupt it.
Your patient has an exodeviation that diverges more at near than at a
distance. This is evidence of: - Ans--Convergence insufficiency. If the
patient cannot pull their eyes in for near viewing, then the deviation is
greater at near than at distance.
, Your patient has an esodeviation that is worse at near than it is at distance.
This is classified as: - Ans--Convergence excess.
A and V patterns are types of horizontal deviations that: - Ans--Vary in up
and down gaze
The most common cause of a V pattern is: - Ans--An overactive IO.
Which pattern is the most common?
a.) V pattern XT
b.) V pattern ET
c.) A pattern XT
d.) A pattern ET - Ans--Most common, V pattern ET. Least common, A
pattern XT.
Anisometropia at birth is more likely to result in: - Ans--Exotropia.
Amblyopic eyes have a tendency to drift out.
Which is not commonly associated with horizontal deviations?
a.) Adult-onset blindness in one eye
b.) Down's syndrome
c.) Amblyopia
d.) Blow out orbital fracture - Ans--d.) Blow-out fracture of the orbit.
Vertical deviations are conventionally described by indicating: - Ans--The
higher eye
Decreased elevation of one eye may be due to all of the following except:
a.) Duane's syndrome
b.) Brown's syndrome
c.) Blow-out fracture
d.) Grave's disease - Ans--a.) Duane's syndrome causes horizontal
deviations
Questions With All Correct Answers|
2026 Update| Latest Update
Adduction means the eye turns: - Ans--Inward
If the eye is depressed, it is: - Ans--Turning down.
Which muscles only have a primary action? - Ans--The medial rectus and
lateral rectus
Which muscles are elevators? - Ans--The inferior oblique (adduction) and
the superior rectus (abduction)
As a tertiary action, both oblique muscles: - Ans--Abduct
Which muscles are primarily torsional muscles? - Ans--The superior
obliques (intort) and inferior obliques (extort).
Which muscles act to depress the eye? - Ans--The inferior rectus and
superior obliques.
Which muscles adduct the eye as a tertiary action? - Ans--Superior rectus
and inferior rectus.
Which is an example of a yoked muscle?
a.) RLR and LMR
b.) RLR and RMR
c.) RLR and LLR
d.) RIR and LIR - Ans--a.) RLR and LMR
Yoked muscles are muscles in each eye that accomplish the same vertical
movement. RLR and LMR both accomplush right gaze.
,Which muscles are synergistic for horizontal movement with the medial
rectus? - Ans--Superior rectus and inferior rectus. A synergist is a muscle
that assists another muscle in accomplishing a particular direction.
Which muscles are antagonists for depression with the IR? - Ans--The
superior rectus and inferior obliques. An antagonist is the muscle that works
against a particular motion. The SR and IO work against the depression
caused by the IR.
If one eye has an obvious deviation when you perform a simple external
evaluation of the patient, this deviation is a(n): - Ans--Tropia.
A phoria is exhibited when: - Ans--Fusion is disrupted.
The difference between a phoria and an intermittent tropia is: - Ans--
Phorias are usually controlled unless fusion is disrupted and intermittent
tropics are sometimes controlled (sometimes with fusion, sometimes not.)
An adult patient with a tropia has either: - Ans--Diplopia or suppression
Insert illustration 3-1 - Ans--a.) Orthophoria
b.) Esotropia
c.) Hypertropia
d.) Exotropia
e.) Hypotropia
An intermittent horizontal tropia might be aggravated by all the following
except:
a.) Inattention
b.) Reading
c.) Illness
d.) Fatigue - Ans--b.) Reading. Reading would encourage fusion, rather
than disrupt it.
Your patient has an exodeviation that diverges more at near than at a
distance. This is evidence of: - Ans--Convergence insufficiency. If the
patient cannot pull their eyes in for near viewing, then the deviation is
greater at near than at distance.
, Your patient has an esodeviation that is worse at near than it is at distance.
This is classified as: - Ans--Convergence excess.
A and V patterns are types of horizontal deviations that: - Ans--Vary in up
and down gaze
The most common cause of a V pattern is: - Ans--An overactive IO.
Which pattern is the most common?
a.) V pattern XT
b.) V pattern ET
c.) A pattern XT
d.) A pattern ET - Ans--Most common, V pattern ET. Least common, A
pattern XT.
Anisometropia at birth is more likely to result in: - Ans--Exotropia.
Amblyopic eyes have a tendency to drift out.
Which is not commonly associated with horizontal deviations?
a.) Adult-onset blindness in one eye
b.) Down's syndrome
c.) Amblyopia
d.) Blow out orbital fracture - Ans--d.) Blow-out fracture of the orbit.
Vertical deviations are conventionally described by indicating: - Ans--The
higher eye
Decreased elevation of one eye may be due to all of the following except:
a.) Duane's syndrome
b.) Brown's syndrome
c.) Blow-out fracture
d.) Grave's disease - Ans--a.) Duane's syndrome causes horizontal
deviations
