Quiz 1

Question 1

The ___ along with the posterior optical zone size, determine lens vault.

a. Center Thickness
b. Secondary Curve
c. Peripheral Curve
d. Base Curve

Answer 1

d. Base Curve

Question 2

___ is used to thin the edge of a high minus contact lens.

a. Prism Ballast
b. Hyperflange
c. Truncation
d. Myoflange

Answer 2

b. Hyperflange

Question 3

Soft lenses became readily available in the US in:

a. 1938
b. 1950
c. 1887
d. 1971

Answer 3

d. 1971

Question 4

Which of the following materials would be representative of a soft lens?

a. Silicone
b. PMMA. Polymethymethacrylate
c. HEMA. Hydroxyethylmethacrylate
d. Glass

Answer 4

c. HEMA. Hydroxyethylmethacrylate

Question 5

Which individual is most responsible for the introduction of a plastic corneal contact lens?

a. Butterfield
b. Tuohy
c. Wichterle
d. Fick

Answer 5

b. Tuohy

Question 6

Which individual is most responsible for the introduction of a soft contact lens?

a. Fick
b. Butterfield
c. Tuohy
d. Wichterle

Answer 6

d. Wichterle

Question 7

Which type of rigid lens would be used to solve fitting problems created by excessive corneal astigmatism?

a. Bitoric
b. Front Surface Toric
c. Bifocal
d. Spherical

Answer 7

a. Bitoric

Question 8

Truncation is used to stabilize ___ lenses.

a. Bifocal
b. X-chrom
c. Lenticular
d. Aspheric

Answer 8

a. Bifocal

Question 9

A flat curve will have a ____ radius of curvature than a steep curve.

a. Longer
b. Shorter

Answer 9

a. Longer

Question 10

____ developed the first contact lens for use in Keratoconus patients.

a. Tuohy
b. Ross
c. Kalt
d. Davinci

Answer 10

c. Kalt