Prism

Question 0

Light bends torward what part of the prism?

Answer 0

Base.

Question 1

If you move a minus lens in torward the nose (away from temple) you are inducing which kind of prism?

Answer 1

Base Out

Question 2

If you move a minus lens down, you are looking through what type of prism?

Answer 2

Base up

Question 3

If you move a minus lens up you are looking through what type of prism?

Answer 3

Base Down.

Question 4

Formula for Prentice’s Rule

Answer 4

H= P/D x 10

(D is the total power of the lens)

(Prism = length from oc in mm x diopter of lens divided by 10)

Question 5

If you move a plus lens away from the nose (to temple) it induces what type of prism?

Answer 5

Base Out.

Question 6

If you move a plus lens in towards the nose (away from temple) it induces what type of prism?

Answer 6

Base In.

Question 7

If you move a plus lens down you induce what type of prism?

Answer 7

Base Down

Question 8

If you move a plus lens up you are inducing what type of prism?

Answer 8

Base Up

Question 9

The purpose of Prentice’s Rule is to Calculate:

Answer 9

Induced prism

Question 10

If you move a minus lens torward the temple you’ve induced what type of prism?

Answer 10

Base In