Color Vision Testing

Question 1

Cones

Answer 1

Photoreceptor responsible for seeing color vision. Ex: red, green, blue

Question 2

Long wavelength (red) sensitive cones contain the pigment

Answer 2

Erythrolabe

Question 3

Medium wavelength (green) sensitive cones contain the pigment

Answer 3

Chlorolabe

Question 4

Short wavelength (blue) sensitive cones contain the pigment

Answer 4

Cyanolabe

Question 5

percentage of males with color vision deficiencies

percentage of females

Answer 5

8%

0.5%

Question 6

Which color vision defects are the most common inherited type of color deficiency and usually affect both eyes.

Answer 6

Red-green

Question 7

Optimal lighting for color vision screening

Answer 7

Standard illumination C is optimal. Overhead fluorescents are best option.

Question 8

Acquired color defects are usually the rest of

Answer 8

A disease process, and usually tend to be blue yellow defects and can be monocular.
Causes of acquired blue-yellow defects include cataract formation, macular degeneration and diabetic retinopathy.

Question 9

Example of why you might acquire a rare red-green defect

Answer 9

optic nerve pathway lesion and toxic amblyopia

Question 10

Why would you use the red cap test?

Answer 10

A less bright red could indicate some form of optic nerve disease.
Good eye- “okay this red is worth $1.
With bad eye, how much would you pay for this red?”