Objective 4

Question 1

What must be used in conjunction with Schirmer’s test # 2 to assist in producing accurate results?

Answer 1

a topical anesthetic

Question 2

Fluorescein and the cobalt filter allow the practitioner to assess the fit of an RGP contact lens when used in conjunction with what slit lamp illumination?

Answer 2

diffuse illumination

Question 3

What is the reason a fitter should ensure that fluorescein not come in contact with a patient’s clothing?

Answer 3

fluorescein permanently stains

Question 4

What are two advantages of the Burton Lamp over a slit lamp?

Answer 4

portability and larger viewing area

Question 5

What food color dye produces the same results as Rose Bengal without stinging?

Answer 5

listhamine green

Question 6

What is Schirmer’s test used to measure?

Answer 6

quantity of tears

Question 7

What filter is placed in front of the observation system and not the illumination system to assist in fluorescein pattern evaluation?

Answer 7

Wratten (yellow) filter

Question 8

What is the most commonly used dye in contact lens fitting?

Answer 8

sodium fluorescein

Question 9

What is the bacterium that can contaminate opened bottles of liquid fluorescein and cause a devastating infection if the epithelium is compromised?

Answer 9

pseudomonas aeruginosa

Question 10

What red dye stains mucus and dead cells?

Answer 10

Rose Bengal

Question 11

What filters are used in the evaluation of tear film and to prevent the passing of light from a specific angle?

Answer 11

polarizing filters

Question 12

What filter is used to view neovascularization?

Answer 12

Red free (green)

Question 13

What does a break-up-time test measure?

Answer 13

tear quality

Question 14

A break-up-time of less than how many seconds indicates an abnormal tear film and is an indication of potential problems with contact lens wear, particularly soft lenses?

Answer 14

10 seconds

Question 15

What is the most commonly used filter?

Answer 15

Cobalt blue or Ultraviolet

Question 16

With a lower B.U.T. (tear break up time), what kind of material should be used?

Answer 16

a more rigid material should be considered.

Question 17

A BUT of less than 10 seconds generally indicates an _____ tear film layer and is an indication of potential problems with contact lens wear. This becomes more evident with the use of ____ contact lenses

Answer 17

abnormal

Soft