Block 12 - Self Assessment Question chapter 6

Question 1

A yellow background is used when performing short wavelength automated perimetry because this background

Answer 1

Suppresses M nd L cones

Question 2

According to kollner’s rule, AMD is most likely to result in which type of color vision defect

Answer 2

Tritan

Question 3

A pt with deuteranomalous trichromacy adjust the nagel anomaloscope so that the mixture and test fields match. He then stares at a large green light and then view his original match. He will report that

Answer 3

The 2 fields remain perfectly matched

Question 4

Screening for red/green anomalies in kids is important because it could

Answer 4

Affect performance on color coded school lessons

Question 5

Which color pair is least likely to be confused by a pt with a duetan color vision anomaly

• purple green
• purple blue
• red yellow
• red blue

Answer 5

Red blue

Question 6

Pt with protanomalous trichromacy makes a match on the nagel anomaloscope. When viewed by a normal trichromacy, the mixture field may appear

Answer 6

Red

Question 7

A pt with which defect is most likely to have a recent history of color naming errors

Answer 7

Tritan

Question 8

Which wavelength pair appears most similar to pt with protanopia

• 495 and 500
• 500 and 505
• 520 and 525
• 540 and 545

Answer 8

540 and 545

Question 9

As the mixture field of the nagel anomaloscope is adjusted, what happens to luminance

Answer 9

Remains constant

Question 10

Location of peak for abnormal M cone absorption spectra in pt with deuteranomalous trichromacy

Answer 10

540

Question 11

Women’s mother has a deutan anomaly and her father and husband have normal color vision. What percentage of her sons are expected to have aq color vision anomaly

Answer 11

50%

Question 12

The fovea of a person with red green dichromacy contains how many types of photopigments

Answer 12

1

Question 13

Person with monochromacy compares his vision when looking through a red filter to his vision without. Using the red filter, the individual will function as if he has

Answer 13

2 photopigments

Question 14

A person with protanopia is presented 2 patches of light. 1 is 560, the other is 600. By proper adjustment of intensities, this individual can matc h these 2 so they appear to hav the same

Answer 14

Brightness, hue and saturation

Question 15

Pt with protanopia matches 670 to 590 in anomaloscope. When viewed by Person with normal vision, the 590 will appear

Answer 15

Dimmer than 670

Question 16

Expected va for adult with inherited deuteranopia

Answer 16

20/20

Question 17

Do the Pseudoisochromatic plate tests differentiate between protan and deutan

Answer 17

Yes

Question 18

Do the Pseudoisochromatic plate tests differentiate between deuteranopia and deuteranomaly

Answer 18

No

Question 19

CV test best suited to assess a pt suspected of having outer retinal disease

Answer 19

D15

Question 20

Child with normal VA fails a pseudoisochromatic plate test. Most like diagnosis is

Answer 20

Anomalous trichromacy

Question 21

Type of anomaly is least likely to the the same in each eye

Answer 21

Tritan

Question 22

Cone photopigment evolved most recently

Answer 22

Chlorolabe