Unit 5

Question 0

What lid position is preferred when fitting RGP lenses?

Answer 0

U=+2 L=0

Question 1

When fitting contact lenses, it is important to consider vertex distance when the prescription is greater than _____ diopters.

Answer 1

4.00D

Question 2

Sagittal value describes…

Answer 2

The vaulting effect of a lens

Question 3

A hyper flange lens design is most frequently indicated for which type of lens.

Answer 3

A high minus

Question 4

When observing a fluorescien pattern, and oval touch in the vertical meridian would indicate….

Answer 4

A flat for and against the rule astigmatism.

Question 5

With a rigid contact lens in place, a fluorescien pattern shows a narrow band horizontally with a concentration of fluorscien inferiorly and superiorly under the lens. Which of the following types of astigmatism is represented by this pattern?

Answer 5

With the rule.

Question 6

______ is used to thin the edges of a high minus contact lens.

Answer 6

Hyperflange