16 Color Deficiency Flashcards Preview

Vision Science I > 16 Color Deficiency > Flashcards

Flashcards in 16 Color Deficiency Deck (26):
1

Slide 2: It is known that L:M cone ratios vary considerably. Will an individual with a lower L:M ratio have less color perception than an individual with a higher L:M ratio?

No.

2

Slide 2: T/F: If a normal-sighted person wears rose-colored glasses for a few weeks, eventually the visual system will normalize the color perception and the individual will see normally.

True

3

Slide 3: T/F: An individual with normal color vision has three peak wavelengths in their cone spectra, while protanopes and deuteranopes also have three peak wavelengths but at different frequencies.

False. Protanopes and deuteranopes are missing specific peak wavelengths

4

Slide 9 : What cones on the x- chromosome?

M and L rhodopsin

5

Slide 10 : True or False L-cone pigment expressed by single X chromosome gene?

True

6

Slide 11: True or False . M-cone pigment expressed by single X chromosome genes?

False , ( several )

7

slide 9 : Color blind is more prevalence in males or Females?

Males

8

slide 12: which is more prevalence Protanomaly or Deuteranomaly in males ?

Deuteranomaly

9

slide 13 : True or False Anomalous trichomats have less severe color deficiency?

True

10

slide 10 : L cone deficiency is more common than M cone

False

11

Slide 5: T/F Dichromats have more difficulty distinguishing objects of similar color when the objects are in motion.

False.

12

Slide 6: The chromophore is located in these two bands in the Rhodopsin sequence.

VI and VII

13

Slide 7: Which chromosomes are rhodopsin pigment expressed in?

3, 7, and X

14

Slide 8: T/F The L and M pigments are found in the X chromosome.

True

15

Slide 7: Which chromosomes are the S pigment expressed in?

Chromosomes 3 and 7

16

Slide 19: With the Lanthony-Farnsworth D-15 mapping, patient has trouble with numbers 3 and 12. Patient most likely has which type of color deficiency?

Protanope

17

Slide 19: T/F: With Lanthony-Farnsworth D-15 mapping colors are laid out to cross all three different confusion lines.

True

18

Slide 20: T/F: Rod monochromasy is a rare defect where patient does not have any cones.

True

19

Slide 21: T/F: Farnsworth 100-hue is a desaturated test.

False, it is saturated.

20

Slide 21: T/F: Farnsworth 100-hue is a more popular test because it takes less time to administer.

False, it is less popular and takes a longer time to administer.

21

Slide 14: T/F Hybrid genes shift the cone peak sensitivity

True

22

Slide 14: What is the peak sensitivity (in nanometers) for a trichromat with a normal L-cone?

560

23

Slide 15: What do the confusion lines in a CIE color space represent?

The hues that an individual with a color deficiency has TROUBLE distinguishing.

24

Slide 15: Adding the spaces between the confusing lines in a CIE color space sums up to?

The number of different hues that the individual is ABLE to distinguish.

25

Slide 16: How many different hues can Tritanopes distinguish?

11

26

Slide 18: In this color deficiency test, the patient is presented with desaturated color disks and must arrange them in a particular order based on color.

Farnsworth D-15 color test