Prelim Evaluation

Question 1

When using therapeutic CLs make sure they

Answer 1

Have high Dk for oxygen trsnimission to help out the healing

Question 2

Topography is used for

Answer 2

Hard lenses, when detail is needed

Question 3

Refractive astigmatism

Answer 3

For a soft CL, the refractive astigmatism is the same as resdiual astigmatism. For RGP the calculation is needed.

Question 4

What eye position will have near symptoms while wearing CLS

Answer 4

Exophoric Myopes

Esophoric hyperopes

Question 5

What do do if a pt is past grade 1 papillary reaction?

Answer 5

Daily lens
Antihistamine
Corticosteroids

Question 6

Edema

Answer 6

MUST be treated before fitting CLs.

Acute: strome strae or folds
Chronic: microcysts and vacoules

Question 7

Opacities

Active vs inactive

Answer 7

Active: conreal infiltrates or microbial keratitis -> NO CLs

Scars: and old inflammation

Question 8

How to get Contact diameter

Answer 8

HVID + Pupil diameter

Question 9

Lid problems with CLs

Answer 9

• Loose will always push the lens down, use steeper lens

- Tight will push lens up or squeeze down, use a different diameter so it stays

Question 10

How to determine optic zone for rigid lens

Answer 10

Pupil diameter in dim illumination

If too small, it cause glare in dim light
Should be 1-2mm larger than pupil