Week 2

Question 1

To resolve two point sources, what distribution of cones must occur where the image strikes the retina?

Answer 1

There must be a cone producing less than the full response between two cones that produce the full response

Question 2

Where does the actual ‘weld’ take place on the retina, based upon the physiology of the eye?

Answer 2

Pigmented Epithelium

Question 3

Which statement is correct?

Answer 3

A desk lamo is an isotrophic source. A laser is a collimated source.

Question 4

How does the flux of light from an collimated source depend on the distance r from the source.

Answer 4

It is a constant independent of distance

Question 5

Why is damage to neighboring tissue minimized?

Answer 5

because the laser beam is intense and has very low divergence its energy can be focused onto a small spot

Question 6

What factors do not affect visual acuity?
-Region of retina image falls upon
-Density of receptors
-levels of illumination
-All factors above

Answer 6

All factors above affect visual acuity

Question 7

How does the flux of light from an isotropic source depend on the distance r from the source?

Answer 7

r^-2