Question 1

In what cases are ridged gas permeable contact lenses preferred over soft lenses?

Accepted Answer

A)  In severe cases of dry eyes
B)  In some cases of astigmatism
C)  In cases of irregularly shaped corneas
D)  All of the above D

Question 2

Contact lenses rest on the moist surface of the

Accepted Answer

A)  iris.
B)  cornea.
C)  pupil.
D)  retina. B

Question 3

There are generally three variables printed on a contact lens box. What does the marking "(P)" stand for?

Accepted Answer

A)  Pupil
B)  Power
C)  Part-time
D)  Permeable B

Question 4

Which of the following conditions preclude a patient from being able to wear contact lenses?

Accepted Answer

A)  Having been dissatisfied with previous contact lenses
B)  Being over the age of 65
C)  Being under the age of 15
D)  Acute seventh nerve palsy (Bell's palsy)

Question 5

In order to properly fit a patient for contact lenses, the radius of the cornea's curvature must be measured with what instrument?

Accepted Answer

A)  Keratometer
B)  Lensometer
C)  Optokinetic drum
D)  Ultrasound pachymeter

Question 6

A poorly fitted contact lens will most commonly result in

Accepted Answer

A)  a satisfied patient.
B)  macular degeneration.
C)  a corneal abrasion.
D)  iritis.

Question 7

What is the imperative first step in inserting contact lenses?

Accepted Answer

A)  Blinking both eyes 10 times
B)  Removing contact lens solution cap
C)  Hand washing for at least 15 seconds
D)  None of the above

Question 8

Bifocal contact lenses should be considered for patients

Accepted Answer

A)  over the age of 40 who have problems focusing up close.
B)  suffering from astigmatism.
C)  suffering from myopia.
D)  suffering from hyperopia.

Exam 2: Contact Lenses