Non-Big 8

Question 1

What is the Ferry-Porter Law?

Answer 1

High frequency CFF increases linearly with the log of retinal illuminance

Question 2

What is the Granit-Harper Law?

Answer 2

High frequency CFF increases as stimulus size increases (secondary to peripheral retina detecting flicker)

Question 3

What is the Broca-Sulzer Effect?

Answer 3

Light flashes appear brightest when they last for 50 - 100 msec

Question 4

What is the Brucke-Bartley Effect?

Answer 4

Flickering light will appear brighter than a constant light of the same luminance

Question 5

What is the Talbot-Plateau Effect?

Answer 5

After the CFF threshold is breached, a flickering light and constant light of the same luminance will appear as equal brightness

Question 6

What are Grassman’s Laws?

Answer 6

1. If equal amounts of wavelength are added to two metamers, they will remain metamers
2. If luminance is changed at equal amounts for two metamers, they will remain metamers
3. If A and B are metamers, and B and C are metamers, A and C are metamers

Question 7

What is the Bezold-Brucke Phenomenon?

Answer 7

Perception of hue changes with intensity of light

Question 8

What is Kollner’s rule?

Answer 8

Outer retinal disease = B/Y defect

Inner retinal or ONH disease = R/G defect