OPT 1430L Ophthalmic Lab II UNIT 4

Question 1

he sequence for hand beveling is:

Answer 1

Apply the rear bevel, apply the front bevel, pin bevels, apex bevel

Question 2

A lens bevel angle is commonly recognized as:

Answer 2

113 to 130 Degrees

Question 3

Choose the best material for drill-mount lenses.

Answer 3

Trivex

Polycarbonate

Question 4

For a lens that will be grooved for nylor mounting, a ___ bevel is created.

Answer 4

Flat

Question 5

Three reasons for pin beveling are identified as:

Answer 5

Breakage protection, cosmetics, wearer safety

Question 6

When drilling lenses for 3-piece mounts, ____ affects the angle of the holes drilled.

Answer 6

Lens base curve

Question 7

Two factors which decrease cutting speed are:

Answer 7

Thicker lens, decreased pressure

Question 8

Two factors which increase cutting speed are:

Answer 8

Increased pressure, slower rotation

Question 9

Two types of hand bevel wheels are:

Answer 9

Ceramic and Diamond

Question 10

The frame eyewire groove angle is commonly recognized

Answer 10

Less than or equal to 110 Degrees