Vision

Question 1

Dextoversion

Answer 1

looking to the right

Question 2

Laserversion

Answer 2

looking to the left

Question 3

Convergent

Answer 3

is crossed eyes

Question 4

Divergent

Answer 4

is back to baseline

Question 5

Saccades

Answer 5

Fast eye movements to switch gaze from one object to another

Question 6

Smooth pursuits

Answer 6

Eye movements that follow a moving object

Question 7

Vergence movements

Answer 7

Movement of the eyes toward or away from midline to adjust for different distances between the eyes and the visual target

Question 8

Saccades might be

Answer 8

voluntary or reflexive and is processed in the pons

Question 9

Smooth pursuit eye movements are used to

Answer 9

follow a moving object.

Question 10

Optokinetic reflex

Answer 10

Adjusts eye position during slow head movements.
Example: When a person is walking, the head moves relative to objects in the environment.

Question 11

Accommodation Reflex

Answer 11

Pupils constrict to
increase depth of field

Question 12

Distance vision what happens to ciliary muscles?

Answer 12

Ciliary muscle is relaxed and the zonula fibers are taut

Question 13

Near vision what happens to ciliary muscles?

Answer 13

Ciliary muscle is contracted and the zonula fibers are relaxed

Question 14

Visual acuity

Answer 14

Snellen chart or pocket vision screener, newsprint, test with and without corrective lenses, test one eye at a time

Question 15

Visual field test

Answer 15

one eye covered, pt. instructed to keep looking at examiner’s nose, bring item into field

Question 16

Blind spot

Answer 16

the optic nerve passes through the surface of the retina, there are no photoreceptors

Question 17

Primary visual cortex

Answer 17

Discriminate the shape, size, or texture of objects

Question 18

Visual association cortex

Answer 18

Determines the colors and motion

Question 19

Rubella syndrome

Answer 19

Rash on abdomen during first trimester
3 defects:
Cataracts
Sensory deafness – virus attacks spiral organ and cochlear duct
Patent ductus arteriosus

Question 20

Vestibulo-ocular reflex (VOR)

Answer 20

Action of vestibular information on the eye position during fast movements of the head

Question 21

Eye movement & Head Position. What contributes to these in our vision?

Answer 21

Head movements (vestibular information)
Visual objects (vision information)
Eye movement and position (proprioceptive information)
Selection of a visual target (brainstem and cortical areas)