Low Vision Lecture 1

Question 1

The outer layer of the eyeball is made up of the ____ and the _____

Answer 1

Cornea, sclera

Question 2

The middle layer of the eyeball is the _____ layer

Answer 2

Supportive (muscles and blood supply)

Question 3

The choroid is the blood supply source in the ____ layer of the eye

Answer 3

Middle

Question 4

The middle layer of the eye is made up of the

Answer 4

Vitreous humor, choroid, angle, lens, iris, canal of schlemm

Question 5

The inner layer of the eye is the ____ layer

Answer 5

sensory

Question 6

The most sensitive area of vision is located within the ____

Answer 6

Fovea

Question 7

Cornea’s main job is to

Answer 7

Bend light into the eye

Question 8

True of false: the cornea contains no blood vessels

Answer 8

True

Question 9

Which part of the eye is most often implicated in correctable vision impairments?

Answer 9

Cornea

Question 10

What part of the eye is the outermost lens?

Answer 10

Cornea

Question 11

Which part of the eye shields from germs?

Answer 11

Cornea

Question 12

Iris is the _________ part

Answer 12

Colored

Question 13

The ____ is a diaphragmatic structure

Answer 13

Iris

Question 14

The pupil becomes at near, at rest, in bright light

Answer 14

smaller

Question 15

The sole function of the lens is to

Answer 15

Focus light onto the retina

Question 16

The lens is held by bungee like structures called the _________

Answer 16

Zonnules of Zinn

Question 17

The lens becomes more ___________ as an object gets closer

Answer 17

Rounded

Question 18

The retina initiates the ___________ of vision

Answer 18

Sensation

Question 19

There are a lot more ______ than ______-

Answer 19

Rods

Cones

Question 20

The rods are responsible for ____ light, while the cones are responsible for _____ light

Answer 20

Bright

Dim

Question 21

The ______ cover peripheral vision and motion

Answer 21

Rods

Question 22

The macula is small, but has a _________ in the brain

Answer 22

Large respresentation

Question 23

The _________ is the area of clearest vision

It is where light can be directly on the retina

Answer 23

Fovea

Question 24

Optic nerve (sensory component) is cranial nerve number __

Answer 24

2

Question 25

Oculomotor nerve is CN ___

Answer 25

3

Question 26

Eye movement:

Ductions are

Answer 26

One eye at a time

Question 27

Eye movement:

Versions

Answer 27

Both eyes in same directions

Question 28

Eye movement:

Vergences

Answer 28

Both eyes in opposite directions

Question 29

A gaze stabilizing movement is caused by the __________ reflex

Answer 29

Vestibulo-ocular

Question 30

The optokinetic reflex is the attempt of the eyes to follow a ______

Answer 30

Moving object

Question 31

Scanning is the ability to

Answer 31

Shift the area of clearest vision back and forth in order to find or identify an object (saccades)

Question 32

Tracking is the ability to

Answer 32

Follow a moving visual target while keeping the target in the area of clearest vision (pursuits) this is done with slower moving objects

Question 33

The three foundations of vision are

Answer 33

Oculomotor function, visual fields, visual acuity

Question 34

80% of people receiving vision rehabilitation have ________ or “blind spots”

Answer 34

Central scotomas

Question 35

Binocularity is the ability to

Answer 35

Use both eyes together

Question 36

Stereopsis

Answer 36

The ability to put the images from each eye together into one jointed picture