Chapter 10

Question 1

The best way to begin a training session is by explaining:
a) insertion and removal
b) proper use of solutions
c) adaptive symptoms
d) abnormal symptoms

Answer 1

b) proper use of solutions

Question 2

When watching patients demonstrate proper use of their care system, you should be sure that:
a) they don’t touch the tips of the solution bottles
b) they clean the lenses using a back & forth motion
c) they understand the function of each solution
d) all of the above

Answer 2

d) all of the above

Question 3

If a rigid lens decenters off of the cornea:
a) gently massage the lens back to center through the lids
b) gently place a fingernail under the lens & pop it off
c) place a finger directly on the lens & slide it back on
d) all of the above

Answer 3

A

Question 4

Polyquad is:
a) a substitute for papain
b) a low concentration antimicrobial agent
c) used as a disinfectant in some multipurpose solutions
d) B and C

Answer 4

d) B and C

Question 5

The F.D.A. tests solutions for the effective microorganism kill ratio for __ major groups of eye pathogens.

Answer 5

4

Question 6

Which is NOT a catalyst used in hydrogen peroxide systems?
a) sodium pyruvate b) sodium sulfate
c) sodium carbonate d) sodium thiosulfate

Answer 6

c) sodium carbonate

Question 7

Corneal exposure to 3% hydrogen peroxide causes:
a) epithelial basement membrane defects
b) punctate epithelial staining
c) mild stinging due to low pH
d) A and C

Answer 7

a) epithelial basement membrane defects
b) punctate epithelial staining

Question 8

An advantage to heat disinfection is that:

Answer 8

It is inexpensive and it can be used for patients with solution sensitivities

Question 9

Saline solutions should be buffered to a pH of approximately:

Answer 9

7.4

Question 10

Patients who mix solutions may:

Answer 10

experience irritation
discolor their lenses

Question 11

Subtilisin is:
a) a multi-purpose disinfectant
b) a gram-negative rod
c) an enzyme
d) none of the above

Answer 11

c) an enzyme

Question 12

The most common method of removal of rigid lenses is the “-____ “ method.

Answer 12

Blink

Question 13

Agents that destroy, neutralize, or inhibit growth of pathogenic organisms on contact lenses are called:

Answer 13

disinfectants

Question 14

The oxidation method of disinfecting soft lenses uses:
a) heat b) hydrogen peroxide
c) chlorhexidine d) subtilisin

Answer 14

b) hydrogen peroxide