Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
7 Cards in this Set
- Front
- Back
|
A patient's pupil doubles in size, by what factor does the retinal illumination change?
|
It increases by a factor of 4
|
|
|
Illuminance or luminance refers to the light eminating from a light source?
|
Luminance
|
|
|
Which system (scotopic/Photopic) has greater sensitivity?
|
Scotopic
|
|
|
Purkinje Shift says that as ilumination (increases/decreases) light of (shorter/longer) wavelengths appears brighter?
|
Increases, longer. Rods peak sensitivity is at 507nm, cones is 555nm.
|
|
|
The photochromatic interval indicates the difference in sensitivity between rods & cones. Why is it zero at 650nm?
|
Both rods and cones are equally sensitive at this wavelength
|
|
|
The slope of the light adaptation curve during Weber's law is?
|
1/1
|
|
|
Convert 20/60 into spacial frequency
|
20/60=.33 *30=10
10 CPD |
