Finals - (4) Visual Sense

Question 1

what are 7 visual capabilities?

Answer 1

mobility, accommodation, adaptation, color discrimination and perception, visual acuity, contrast sensitivity, perception

Question 2

what are the most rotational movements in mobility?

Answer 2

1.) left, right (yaw)
2.) up, down (pitch)
3.) roll
4.) forward, backward

Question 3

it is the succession of fast movements in jumps to catch up to the visual target

Answer 3

saccades

Question 4

what is the reverse movements?

Answer 4

regressions

Question 5

in fixations, what is the area, measured in degrees within which the form and color of the objects can be seen by both fixated eyes?

Answer 5

visual field

Question 6

it is the eye pitch angle with regard to the head

Answer 6

line-of-sight angle (LOSA)

Question 7

what is the ability of the lens of the eyes to focus on targets at various distances?

Answer 7

accommodation

Question 8

what are the distances that the ability of the lens of the eyes focus on?

Answer 8

normal focus, nearsighted focus, and farsighted focus

Question 9

what is the ability of the eyes to change in the sensitivity to light?

Answer 9

adaptation

Question 10

what are the 2 types of adaptation?

Answer 10

dark and light adaptation

Question 11

in color discrimination, how do we determine the colors ?

Answer 11

chromaticity diagram

Question 12

TRUE OR FALSE

Not all areas of the retina are equally sensitive to color

Answer 12

true

Question 13

TRUE OR FALSE

we see colors while looking straight ahead and at the periphery of our visual field

Answer 13

false

we can’t see colors at the periphery of the visual field

Question 14

what test is used to figure the degree of your visual impairment other than your eye shape, myopia, hyperopia, and astigmatism and is used as the basis to measure your correct vision?

Answer 14

refraction test

Question 15

in color perception, what colors do we perceived with 50° to the side from straight ahead?

Answer 15

green, red, and yellow

Question 16

in color perception, what color do we perceived with 60° to the side from straight ahead?

Answer 16

blue

Question 17

in color perception, what color do we perceived with 90° to the side from straight ahead?

Answer 17

white

Question 18

what are the 3 possible configurations of the human visual system?

Answer 18

monochromats, dichromats, trichromats

Question 19

what is the ability to discriminate the fine detail and differentiate small objects?

Answer 19

visual acuity

Question 20

what is the smallest space between the parts of a target that the eye can detect?

Answer 20

minimum separable acuity

Question 21

what is the ability to differentiate the lateral displacement of one line from another?

Answer 21

vernier acuity

Question 22

what is the ability to detect a spot (such as a round dot) from its background?

Answer 22

minimum perceptible acuity

Question 23

what is captured by the human eye and processed into an image by the brain?

Answer 23

light

Question 24

where do light rays passes through and through?

Answer 24

pupil, an opening in the eye, and through the cornea and lens

Question 25

it is composed of photosensitive receptors

Answer 25

retina

Question 26

this is sensitive to black and white, especially at night, but have poor visual acuity

Answer 26

rods

Question 27

this are sensitive to colors in daylight but have a good visual acuity

Answer 27

cones

Question 28

what part of the eye are concentrated in the fovea?

Answer 28

cones

Question 29

what part of the eye are spread out over the retina?

Answer 29

rods

Question 30

where do collected electrical signals from the photoreceptors passes by to go to the brain where the light from external illumination is processed and interpreted?

Answer 30

optic nerve

Question 31

the basic theory of illumination applies to a point source of light (e.g. candle) of a ?

Answer 31

luminous intensity, measured in candela (cd)

Question 32

what do you call the amount of light striking a surface or a section of a sphere?

Answer 32

illumination or illuminance, measured in footcandles (fc)

Question 33

the illuminance decreases as the light source increases

Answer 33

angle of incidence

Question 34

what is the amount of light reflected from the surface?

Answer 34

luminance

Question 35

this depends on the amount of light towards the surface, color, and texture of the surface

Answer 35

luminance

Question 36

luminance is measured in?

Answer 36

foot-lamberts (fl)

Question 37

luminance is determined by the reflective properties of the surface known as?

Answer 37

reflectance

Question 38

it is a unitless proportion that ranges from 0 to 100

Answer 38

reflectance