lecture 17 color vision 3 Flashcards
Protanopic is missing function in ____ cones
A) S
B) M
C) L
D) all of the above
C) L
Deuteranopic is missing function in ____ cones
A) S
B) M
C) L
D) all of the above
B) M
Tritanopic is missing function in ____ cones
A) S
B) M
C) L
D) all of the above
A) S
Protanomalous means…
A) L cones are shifted toward M cones
B) M cones are shifted toward L cones
C) M cones are shifted toward S cones
D) S cones are shifted toward M cones
B) M cones are shifted toward L cones
Deuteranomalous means…
A) L cones are shifted toward M cones
B) M cones are shifted toward L cones
C) M cones are shifted toward S cones
D) S cones are shifted toward M cones
B) M cones are shifted toward L cones
What is it called when you have no color vision?
Achromotopsia
What is it called when you only have S cones?
blue cone monochromacy
What are the 2 types of achomatopsia?
rod monochromat and blue cone monochromacy
(T or F) blue cone monochromacy means that you can only see blue
false, this patient would only have functioning S cones, however, with no other cones to compare, this patient would see no color.
Which patient would have better visual acuity between a rod monochromat and a blue cone monochromat
blue cone monochromat since cones provide acuity processing. this patient would probably have 20/20 vision, whereas a rod monochromat would have 20/200 or worse best corrected.
(T or F) most color anomaly disorders are X-linked which means it is more likely for females to be affected.
false, while they are x-linked, these disorders tend to be more frequent in males since women have 2 X’s and would most likely be carriers.
Protoanopic, tritanopic, and deuteranopic are examples of what?
A) monochromacy
B) dichromacy
C) anomalous trichromacy
D achromacy
B) dichromacy
photophobia, nystagmus, poor visual acuity, and achromatopsia is common in which condition?
rod monochromat
A confusion line in a CIE diagram represents:
A) a line in which a dichromat can only see white
B) a line in which a trichromat sees the same hue
C) a line in which a trichromat sees no color
D) a line in which a dichromat sees the same color
D) a line in which a dichromat sees the same color
The first bold plate on the ishihara plates is considered a control plate, however, if your patient cannot distinguish the number on it, what might be the problem?
that person would have no color vision (achromatopsia)
