Vision 2

Question 1

Factors that affect light and dark adaption

Answer 1

Photosensitive cells
Pupillary size
Neural adaptation

Question 2

It has a higher sensitivity to light

Answer 2

Cones

Question 3

This is the most common form of color blindness

Answer 3

Red-Green blindness

Question 4

What do you call when the a person lost his red cones

Answer 4

Protanope

Question 5

When a person lost his green cones

Answer 5

Dueteranope

Question 6

Blue weakness is called

Answer 6

Tritanope

Question 7

What NTA is utilized by stimulant cells in the neural retina

Answer 7

Glutamate

Question 8

NTA utilized by the inhibitory cells in the neural retina

Answer 8

GABA

Question 9

This allows graded conduction of signal strength

Answer 9

Electronic conduction

Question 10

what principle is to have a high visual accuracy in transmitting contrast borders in the visual image

Answer 10

Principle of lateral inhibition

Question 11

The main function of the cell is on and off signaling of the stimulus which is light

Answer 11

Amacrine cells

Question 12

This type of ganglion is small, slow, directionally sensitive and for black and white vision

Answer 12

W cells

Question 13

It is the most numerous ganglion cells, for fine visual image and for cone vision

Answer 13

X cells

Question 14

Largest and fastest and it responds to rapid changes in the visual image

Answer 14

Y cells

Question 15

Magnocellular pathway characteristics

Answer 15

Black and white vision
Poor accuracy
Y cells
Layers 1 and 2

Question 16

Parvocellular pathway characteristics

Answer 16

Layer 3 to 6
X cells
Color vision
High accuracy

Question 17

This is also known as striate cortex

Answer 17

Brodmann area 17

Question 18

Where will the magnocellular and parvocelluar pathway terminate

Answer 18

Layer 4 of the visual cortex

Question 19

Physiologic blind spot is

Answer 19

15 degrees lateral of the visual field

Question 20

Scotoma could be due to what

Answer 20

Glaucoma
Allergy
Toxins
Tobacco

Question 21

What BA is used for frontal eye field and finding your crush ;)

Answer 21

BA 8

Question 22

Involuntary eye fixation area is located where

Answer 22

Occipital lobe at the calcarine fissure

Question 23

The eyes normally have 3 types of continuous but almost imperceptible movements

Answer 23

Continuous tremors
Slow drift (nystagmus)
Flicking movements

Question 24

This is also called as squint or crossed eye

Answer 24

Strabismus

Question 25

Classic triad of horner’s syndrome

Answer 25

Miosis
Partial Ptosis
Anhidrosis

Question 26

Pin point pupil is called

Answer 26

Argyll Robertson pupil