COA Flashcards - Contact Lenses 2% of exam

Question 0

True or false: The application and evaluation of a diagnosis lens on the eye is the best way to find a contact lens.

Answer 0

True

Question 1

The diffusion of oxygen through a contact lens material is referred to as _______ .

Answer 1

DK Value

Question 2

Name the instrument used to determine the posterior surface radius of curvature of a rigid contact lens.

Answer 2

Radiuscope and or Contacto Gauge

Question 3

Name three reasons to dispense a therapeutic bandage contact lens.

Answer 3

1) to protect cornea from eyelids and eyelashes
2) to promote corneal healing
3) to provide comfort
4) to stop wound leaks
5) to improve vision
6) for drug delivery

Question 4

Name two measurements required to fit a contact lens

Answer 4

Refraction and K-reading (keratometry)

Question 5

Overwear of contact lenses may result in insufficient oxygen to the cornea called ____ .

Answer 5

Hypoxis Ophthalmia