Domain VI: Dispensing & Domain VII: Follow-up

Question 1

Preparing a Soft Contact Lens for Wearing:
Instruct your patients to always wash their hands with a mild soap, rinse completely and
dry their hands with a lint-free towel

Answer 1

true

Question 2

Preparing a Soft Contact Lens for Wearing:
Instruct patients to avoid soaps containing cold cream, lotion, and oily cosmetics

Answer 2

true

Question 3

Preparing a Soft Contact Lens for Wearing:
Instruct patients to handle their lenses with their fingertips and avoid using their
fingernails

Answer 3

true fingernails should be kept short and smooth

Question 4

Instruct patients that prior to opening an individual lens package, shake the lens package
to see if the contact lens is floating in the solution

Answer 4

Have the patient remove or pour the contact lens in the palm of their hand and rinse prior
to inserting the lens in their eye
Prior to insertion, have the patient check the lens for surface defects, nicks, or tears
If the lens is damaged, instruct the patient to use another lens
Remind patients that sometimes lenses maybe damaged or missing from lens package
Patient should be instructed to verify that the contact lens is not inverted or turned inside
out
Taco Test

Question 5

After Insertion:
a) Have the patient close their eyelids and gently massage the lens into place through the
closed eyelids or
b) Have patient gently manipulate the off-centered lens onto to the cornea, using finger
pressure on the edge of the upper or lower lid
c) Never use fingernails to manipulate the lens in place

Answer 5

yep

Question 6

a) To remove surface deposits
b) To disinfect microorganisms
c) To improve surface wettability

Answer 6

The Role of Contact Lens Products:

Question 7

Ph comfort range

Answer 7

6.6-7.8

Question 8

i) Benzalkonium Chloride (BAK)
ii) Chlorobutanol
iii) Thimerosal
iv) Chlorhexidine

Answer 8

Names of Preservatives:

Question 9

Additives that cushions lens material

Answer 9

Hydroxypropyl methylcellulose

Question 10

Additive prevents evaporation

Answer 10

Hydrolock

Question 11

Demulcents that enhances comfortable contact lens application

Answer 11

Propylene glycol

Question 12

Polyvinyl Alcohol

Answer 12

wetting agent

Question 13

Plysorbate

Answer 13

wetting agent

Question 14

Absorbobase

Answer 14

wetting agent

Question 15

Viscosity Builders: Found in Artificial Tears to add substance to the tear film and prevent increase evaporation

Answer 15

Methylcellulose
Hydroxethyl Cellulose

Question 16

Buffers and Osmolarity Control:
Keep the pH of the solution as close to natural tears

Answer 16

Sodium Borate
Sodium Chloride
Sodium Phosphate
Sodium Bicarbonate

Question 17

Lubricants: Agents that attract moisture and prevent the lens material from drying up when used with
contact lenses in the eye

Answer 17

Hydroxypropyl Methylcellulose
Poloxamine
Artificial Tears -solution to supplement the loss of tear formation

Question 18

a) Phenyleprine HCL
b) Napazoline HCL
c) Epenephrine HCL
d) Tetrahydrozoline HCL

Answer 18

Decongestants

Question 19

Replace storage cases every … months

Answer 19

three and Air dry

Question 20

requires rubbing, rinsing and soaking to achieve disinfection

Answer 20

Multi-purpose solution (MPS)

Question 21

must achieve a higher kill rate of bacteria and fungi during the labeled soak time
without rubbing or rinsing

Answer 21

Multi-purpose-disinfecting solution (MPDS)

Question 22

Most MPS systems also contain ingredients that may help improve comfort by …

Answer 22

decreasing dryness

Question 23

All MPS solutions are approved for NO RUB however, the traditional rub and rinse is
still highly recommended

Answer 23

true

Question 24

advantages and disadvantages to mps

Answer 24

Simplicity and reduced cost, used with any lens

Higher risk of patient hypersensitivity

Question 25

Most peroxide systems require a minimum of 6 hours and some may require 10 minutes depending on manufacturer

Answer 25

true

Question 26

i) better durability
ii) less protein deposition
iii) increased end-of-day comfort.

Answer 26

Silicone hydrogel lenses advantages

82% of practitioners are selecting Silicone Hydrogel materials for new
spherical contact lens patients

Question 27

i) increased lipid deposits
ii) stiffness of the material

Answer 27

silicone hydrogel lenses disadvantages

Question 28

Silicone Hydrogel Lenses Group I

Answer 28

< 50% water, non-ionic

Question 29

Silicone Hydrogel Lenses Group III

Answer 29

< 50% water, ionic

Question 30

a) Thimerosal Sensitivity
b) Clinical Signs- Vessel Engorgement, Itching

Answer 30

Contact Lens Induced Superior Limbal Keratoconjunctivitis (SLK)

Question 31

a) Rare painful and potentially blinding infection to the cornea
b) Found in all environments: soil, fresh water, swimming pools, hot tubs, tap water and
even bottled water
c) Use of tap water during lens care (to rinse lenses or the storage case)
d) Wearing contact lenses without goggles
e) Use of Ineffective lens care solutions

Answer 31

Acanthamoeba:

Question 32

Clearer soaps
are better since they contain less lanolin which can smear the contact lens surface. Avoid
liquid soaps which often contain moisturizers that coat lenses. Dry your hands with a lintfree
cloth to reduce the chance of trapped dust under the lens.

Answer 32

RGP insertion

Question 33

A suction holder is the most recommended method for lens removal. Make sure that it is
applied directly to the lens and not onto the eye. When the ‘sucker’ has suctioned onto the
lens gently twist the lens off your eye.

Answer 33

RGP removal

Question 34

a low concentration antimicrobial agent used as a disinfectant in some multipurpose solutions

Answer 34

Polyquad

Question 35

The FDA tests solutions for the effective microorganism kill ratio for ____ major groups of eye pathogens

Answer 35

4

Question 36

Corneal exposure to 3% hydrogen peroxide causes

Answer 36

punctate epithelial staining