OPT-2501 Cntct Lns Theory I Unit 4

Question 1

THE BEST LENS FOR A MODERATE DRY EYE PATIENT IS

Answer 1

LOW WETTING ANGLE RGP

Question 2

THE FIRST SOFT CONTACT LENSES WERE MADE USING THE

_________ METHOD.

Answer 2

SPIN CAST

Question 3

A PATIENT HAS PREVIOUSLY BEEN UNABLE TO WEAR CONTACT
LENSES DUE TO CORNEAL HYPOXIA AND EXCESSIVE LENS
DEPOSITS. WHICH OF THE FOLLOWING LENS MATERIALS WOULD
BE USED TO ALLEVIATE THESE PROBLEMS?

Answer 3

FSA

Question 4

THE ABILITY OF A FLUID TO SPREAD ACROSS THE

SURFACE OF A RIGID LENS IS INDICATED BY THE_____.

Answer 4

WETTING ANGLE

Question 5

WHICH OF THE FOLLOWING MATERIALS WOULD BE

REPRESENTATIVE OF A SOFT LENS?

Answer 5

HYDROXYETHYLMETHACRYLATE

Question 6

THE DK VALUE OF A LENS REPRESENTS IT’S _________.

Answer 6

TRANSMISSIBILITY

Question 7

WHAT MATERIAL WOULD BE USED FOR SOMEONE INTERESTED IN

INTERMITTENT WEAR?

Answer 7

HEMA

Question 8

IN CASES OF HIGH DEGREES OF CORNEAL ASTIGMATISM, WHICH TYPE OF RIGID LENS PROBABLY WOULD RESULT IN THE BEST FIT?

Answer 8

BITORIC

Question 9

GIVEN THE FOLLOWING CONDITIONS WHAT TYPE OF LENS WILL BEST FILL THE PATIENT’S NEEDS?
RX: -1.50 SPHERE O.U. LENS USE : PATIENT WANTS LENSES FOR
TENNIS,BASKETBALL AND EVENING WEAR ONLY.

Answer 9

HEMA

Question 10

THE “DK” VALUE OF A CONTACT LENS MATERIAL INDICATES IT’S:

Answer 10

PERMEABILITY