Quiz 7 - Surfacing

Question 1

What is the purpose of generating a lens?

a. To improve the clarity of the lens
b. To calculate power lens curves
c. To rapidly cut the surface curvature onto a semi-finished lens blank

Answer 1

c. To rapidly cut the surface curvature onto a semi-finished lens blank

Question 2

What is the purpose of the Cylinder machines?

a. To check the lens for accuracy
b. To edge the lens to fit the frame
c. To wash the lens in between each stage of the surfacing process
d. To fine and polish a surface blank after generation of the power curves

Answer 2

d. To fine and polish a surface blank after generation of the power curves

Question 3

Calculating the power of a lens for generation requires all of the following except:

a. Lens base curve
b. Frame A, B, DBL, and ED
c. Patient’s Rx
d. Material of the lens
e. Brand of frame

Answer 3

e. Brand of frame

Question 4

Choose the correct order of the fining and polishing procedure

a. First fine, Second fine, Polish
b. Polish, First fine, Second fine
c. The order is of no importance
d. Second fine, First fine, Polish

Answer 4

a. First fine, Second fine, Polish

Question 5

A Lap Tool is used during which processes:

a. Inspection
b. Final Adjustments
c. Fining and Polishing
d. Edging

Answer 5

c. Fining and Polishing

Question 6

In most labs, what is the best tool to use to accurately measure the base curve (F1) of a lens?

a. Sag Gauge
b. Lensmeter
c. Geneva Lens Measure
d. Lens Clock

Answer 6

a. Sag Gauge

Question 7

All of the following are needed to be entered into the lab computer except…

a. Frame color
b. Lens material
c. Lens Design
d. Frame Design
e. Lens Base Curve
f. Patient’s Rx

Answer 7

a. Frame color

Question 8

What information is the lab computer supposed to calculate and provide so the generator can do it’s job?

a. Lens type, lens color, frame type
b. Lens F1, Lens F2, Lens Ftotal
c. Total sales, payroll, and commission
d. Lens power curves (F2), lens finished thickness, lens finished diameter (crib size)

Answer 8

d. Lens power curves (F2), lens finished thickness, lens finished diameter (crib size)

Question 9

Surface saver tape is applied just before which step?

a. Sag measurement
b. Fining
c. Blocking
d. Generation

Answer 9

c. Blocking