Visual System Cont'd

Question 0

This type of COLOR BLINDNESS is characterized by SHORTENED LUMINOSITY function in BLUE REGION.

Answer 0

Tritanopia

Question 1

True or False: YELLOW-BLUE color blindness is much MORE RARE than RED-GREEN color blindness.

Answer 1

TRUE

Question 2

In regards to TRITANOPIA, a person is regarded as missing ____1____ receptors or a ____1____ receptor process involving _____2____ in ____1___ region.

Answer 2

Blue

Iodopsin

Question 3

This type of COLOR BLINDNESS is characterized by a person ONLY being able to see BLACK, WHITE and SHADES OF GRAY.

Answer 3

Monochromatism

Question 4

True or False: DARK ADAPTATIONS occur slowly with rods.

Answer 4

FALSE, DARK ADAPTATION occurs RAPIDLY with CONES.

Question 5

True or False: RODS adapt to dark slower than cones.

Answer 5

TRUE, RODS adapt to dark SLOWER than do cones

Question 6

In regards to DARK ADAPTIONS, ____________ REGENERATES much more RAPIDLY than _____________.

Answer 6

IODOPSIN regenerates FASTER THAN RHODOPSIN

Question 7

True or False: DARK ADAPTATION CURVES following relatively WEAK pre adapting lights BEGIN at a LOWER POINT and reach their plateau more __________.

Answer 7

Rapidly

Question 8

DARK ADAPTATION CURVES following relatively WEAK pre adapting lights show less of a _____________.

Answer 8

Cone-Rod Break

Question 9

CRITICAL FLICKER FREQUENCY (CFF) is measured by a(n) _______________.

Answer 9

Episcotister

Question 10

The CFF for RODS is ___ to ___cps. (Low intensity light)

Answer 10

2-3

Question 11

CFF for CONES is ___cps. (High intensity light)

Answer 11

60

Question 12

This is a CHANGE IN RELATIVE BRIGHTNESS of various wavelengths of light in passing from PHOTOPIC to SCOTOPIC vision and vice versa.

Answer 12

Perkinje Shift

Question 13

This TYPE OF VISION refers to the PERCEPTION of PATTERNS and details in the VISUAL WORLD.

Answer 13

Spatial Vision

Question 14

This TEST of SPATIAL VISION has the individual READ VARIOUS LINES OF LETTERS of various sizes.

Answer 14

Snellen Test

Question 15

This TEST of SPATIAL VISION has the individual DIFFERENTIATE C’s and O’s from one another.

Answer 15

C-Test

Question 16

Name the TWO (2) MEASURES of SPATIAL VISION.

Answer 16

Minimum Separable

Minimum Visible

Question 17

Name the TWO (2) types of MINIMUM SEPARABLE tests.

Answer 17

Snellen

C-Test

Question 18

This is the method of MAPPING OBJECT VISION.

Answer 18

Perimetry

Question 19

What TWO (2) DEFICITS can be DETECTED by means of PERIMETRY?

Answer 19

Scotoma

Tunnel Vision

Question 20

This type of VISUAL DEFICIT is characterized by an AREA OF VISUAL LOSS.

Answer 20

Scotoma

Question 21

This type of VISUAL DEFICIT is characterized by LOSS of all PERIPHERAL VISION.

Answer 21

Tunnel Vision

Question 22

What are the TWO (2) types of movement in regards to vision?

Answer 22

True Movement

Apparent Movement

Question 23

TRUE MOVEMENT can be SIGNALED to the brain in 1 of what 2 ways?

Answer 23

1.) SEQUENTIAL STIMULATION of retinal receptors (may get AFTER IMAGES)

OR

2.) EYES FOLLOWING a moving OBJECT (NO after images)

Question 24

This type of AFTER IMAGE following SEQUENTIAL STIMULATION of retinal receptors result in movement in the SAME DIRECTION as the original stimulus.

Answer 24

Positive

Question 25

This type of AFTER IMAGE following SEQUENTIAL STIMULATION of retinal receptors result in movement in the OPPOSITE DIRECTION as the original stimulus.

Answer 25

Negative