Deck 8: Ocular Motility and Visual Fields

Question 1

What type of screening evaluates the range and symmetry of motion of both eyes together and each eye individually?

A)Ocular motility
B)Visual acuity
C)Refraction
D)Goniography

Answer 1

Ocular motility

Question 2

The failure of the eyes to spontaneously direct their gaze at the same object because of muscular imbalance is known as

A)binocular vision.
B)strabismus.
C)myopia.
D)keratoconus.

Answer 2

strabismus.

Question 3

What is the easiest method of determining the amount of strabismus in an infant?

A)Krimsky test
B)Hirschberg test
C)Cover test
D)Hess screen test

Answer 3

Hirschberg test

Question 4

When performing a Hirschberg test, each millimeter of deviation from the normal position of the light reflex represents how many degrees of displacement?

A)10 degrees
B)5 degrees
C)7 degrees
D)2 degrees

Question 5

The ability to maintain visual focus on an object with both eyes, resulting in a single visual image, is known as

A)visual acuity.
B)monocular vision.
C)heterophoria.
D)binocular vision.

Question 6

It is easier to treat strabismus in young children than in adults.

Question 7

A tropia is a

A)latent deviation.
B)manifest deviation.
C)phoria.
D)none of the above.

Question 8

Left untreated, strabismus can develop into

A)amblyopia.
B)cataracts.
C)retinal detachment.
D)glaucoma.

Question 9

Which of the following devices is used to measure strabismus and assess binocular vision?

A)Visuscope
B)Tonometer
C)Phoropter
D)Amblyoscope

Question 10

The condition of faulty sensory adaptation in which the foveae of both eyes do not point in the same direction is known as

A)anonymous retinal correspondence.
B)strabismus.
C)anomalous retinal correspondence.
D)amblyopia.

Question 11

The Worth four-dot test can be used to detect

A)anomalous retinal correspondence.
B)amblyopia.
C)heterophoria.
D)A and C.

Question 12

The eye(s) of a patient with esotropia will turn outward.

Question 13

Amsler grids are only used to test the central __ degrees of a patient's field of vision and not the peripheral.

A)60
B)50
C)30
D)20

Question 14

The confrontation field test is used to screen

A)central vision.
B)peripheral vision.
C)blind spots.
D)the cornea.

Question 15

The most common way providers use to track patients with visual field defects is

A)confrontation fields.
B)automated perimetry.
C)vision analogy.
D)Harrington-Flocks screener.

Question 16

Automated thresholdtesting measures sensitivity at

A)the entire eye.
B)one point, multiple times.
C)each tested point.
D)none of the above.

Question 17

An advantage manual perimetry has over automated perimetry is that it

A)permits testing of the entire visual field.
B)permits testing of preselected points.
C)is more accurate than threshold testing.
D)is more precise than threshold testing.

Question 18

The size of small blind spots can be detected with a(n)

A)confrontation test.
B)Amsler grid.
C)manual perimetry.
D)automated perimetry.

Question 19

The correct speed for moving the tangent screen target is approximately __ degrees per second.

A)20
B)15
C)10
D)5

Question 20

Difficulty in finding the blind spot may be due to all of the following except

A)a stimulus that is moved too slow.
B)fixation loss.
C)a stimulus that is too large.
D)an enlarged blind spot due to glaucoma.

Question 21

When conducting automated perimetry, how bright a stimulus has to be before the patient will see it is known as the

A)false-positive.
B)stimulus brightness.
C)stimulus light.
D)stimulus sensitivity.

Question 22

The smallest size pupil diameter allowable for accurate automated perimetry is

A)3 mm.
B)4 mm.
C)5 mm.
D)1 mm.

Question 23

The extent of vision beyond the fixation point is known as the

A)sidelong vision.
B)central vision.
C)periphery vision.
D)visual field.

Question 24

The peak of the island of vision profile corresponds to the

A)fovea.
B)sclera.
C)cornea.
D)retina.

Question 25

The peripheral vision of a normal person is most narrow temporally and largest superiorly/nasally. True or false?

Question 26

Decreased vision or blindness in half the visual field of one or both eyes is known as

A)myopia.
B)hemianopia.
C)loss of fixation.
D)hyperopia.

Question 27

What is the term for an area inside a visual field isopter that does not respond to any of the targets available on that particular machine?

A)Fixation
B)Chiasm
C)Scotoma
D)Sea of darkness

Question 28

The boundary of an area that responds to the same stimulus intensity is called an

A)occipital cortex.
B)optotype.
C)scotoma.
D)isopter.