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VSP - FOUNDATION LATEST EXAM QUESTION AND VERIFIED ANSWERS | 100% SOLUTIONS /GRADE A+ $16.99   Add to cart

Exam (elaborations)

VSP - FOUNDATION LATEST EXAM QUESTION AND VERIFIED ANSWERS | 100% SOLUTIONS /GRADE A+

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  • Course
  • VSP - Foundation 2022
  • Institution
  • VSP - Foundation 2022

VSP - FOUNDATION LATEST EXAM QUESTION AND VERIFIED ANSWERS | 100% SOLUTIONS /GRADE A+

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  • October 1, 2024
  • 34
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • VSP - Foundation 2022
  • VSP - Foundation 2022
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MEGAMINDS
VSP

1. Pigment of macula Lutein
lutea Zeaxanthin
Meso-zeaxanthin

2. Rod count 120 million

3. Cone count 6 million

4. Rod peak density 20 deg (~6 mm) from fovea

5. Cone peak density 0 deg.
Highest at the fovea

6. Rod time response Slow

7. Cone time re- Fast
sponse

8. Rod directionality No
Sensitive to scattered light

9. Cone directionality Yes
Sensitive to direct light

10. Rod Photopigment Rhodopsin

11. Cone photopig- Chlorolabe
ment Cyanolabe
Erythrolabe

12. Rod light sensitivi- High
ty

13. Cone light sensitiv- Low
ity

14. Cone temporal res- High
olution ~60Hz

15. Low


, VSP

Rod spatial sensi-
tivity

16. Cone spatial sensi- High
tivity

17. Rod adaptation 30-40 mins

18. Cone adaptation 5-8 mins

19. Rhodopsin max ab- 507 nm
sorption

20. Cyanolabe max ab- 426 nm
sorption

21. Chlorolabe max ab- 530 nm
sorption

22. Erythrolabe max 560 nm
adaptation

23. Rhodopsin mole- 10^7
cules in one rod

24. Rhodopsin mole- 10^15
cules in whole reti-
na

25. Time for Rods to 40 mins
absorb photon

26. CHAPTER 5 CHAPTER 5

27. equation of energy E= hc/»
in a photon

28. What did the Hecht, minimum light energy (minimum number of photons)
Shlaer & Pirenne required to result in the perception of light




, VSP

experiment try to
determing?

29. Conditions for scotopic conditions (dark adapted subject, 40 mins)
Hecht, Shlaer &
Pirenne experi- 20 deg. retinal eccentricity
ment
stimulus size of 10 min of arc (<50 min of arc)

1 ms stimulus duration (<100 ms)

stimulus 510 nm wavelength

fixation point of ~650nm to be invisible to rods and not
to disturb dark adaptation

30. what happens to increases due to an increase in the receptive field of
the critical diam- ganglion cells
eter of a stimu-
lus under scotopic
conditions as reti-
nal eccentricity in-
creases?

31. what happens complete spatial summation
when the stimulus
size is smaller than
that of the critical
diameter?
(scotopic vs pho-
topic?)

32. critical duration ~100 ms
of stimulus un-
der scotopic condi-
tions

33. what happens complete temporal summation
when a stimulus
duration is shorter


, VSP

than the critical du-
ration?
(scotopic v pho-
topic?)

34. peak scotopic 505 nm
spectral sensitivity

35. dispersion seperating the wavelengths of a light source by using a
refractive index

36. T/F true
the refractive in-
dex of a material this is the source of chromatic aberrations
is wavelength-de-
pendent

37. neutral density fil- equally reduces the intensity of all the wavelengths in
ter function the spectrum

38. optical density of OD = -log10 (transmitted light intensity/incident light
neutral density fil- intensity)
ter equation

39. transmitted light I = (10^(-OD)) * (Io)
intensity equation

*neutral density fil-
ter

40. What percent of formula:
incident light is (10^-OD)*100
transmitted by a
neutral density fil- Ans: 1%
ter with OD = 2

41. T/F True

according to HSP
experiment, the

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