Quiz For Draft Working with Premium Lenses

Polarized lenses offer protection from:

High-index lens materials often come with

1. anti-reflective coatings
2. scratch-resistant coatings
3. oleophobic coatings
4. hydrophobic coatings

“High-index” means that a lens material

Ophthalmic lens materials can be classified in ____________ generally accepted index of refraction categories.

High-index materials can be _____ than traditional materials.

When compared to CR39, polycarbonate lenses________________

1. have superior tensile strength
2. are easier to tint
3. have a lower ABBE value
4. are lighter in weight

___________________refers to the speed of light in any given material compared to the speed of light in air.

_________________refers to the relative measure of dispersion or color distortion present in a lens material.

_____________________refers to the weight in grams of one cubic centimeter of any given lens material.

As the U.S. population ages__________________, becomes more prevalent.

Progressive lens heights should be measured

When fitting a progressive lens into a frame with a small B measurement, it’s best to use_____________________.

“Personal” progressives that are created using advanced technology should be fitted_____________________.

The seg heights for D-style lined bifocals should normally be measured

The seg heights for D-style lined trifocals should be measured

The first US patent for progressive addition lenses was issued to ____ in ____.

The canthus-to-canthus method of calculating a pupillary distance should be used

Modern, hi-tech anti-reflective coatings

Anti-static properties of anti-reflective coatings

An oleophobic coating

A hydrophobic coating

Anti-reflective coatings typically consist of

All of the following properties make a lens material particularly suited for use in drill mounts except:

Polycarbonate lens material

1. is highly impact resistant
2. tints easily
3. is quick and easy to drill
4. has a relatively high index of refraction

Alternative lens materials that are suitable for drill mounts are

1. flint glass
2. MR-10
3. Trivex
4. photochromic glass

An ABBE value with a higher number

High-index materials are typically _________________ CR-39.

1. harder than
2. softer than
3. thinner than
4. thicker than

Tinting high-index lenses

When acetone is used to remove marking inks from polycarbonate lenses, it can ____________________.

Colored edge pens can be used

What is the index of a plastic lens material that is well suited to fabricate a lens for a prescription greater than +/‐ 5.00 diopters?

Which of these progressive lenses has the smallest fitting height?

Both free‐form and wave‐front lenses are considered part of this lens category.

Which of these is not part of the high definition lens category?

What properties and features will a computer use lens have?

Color change lenses are being created to darken even behind the windshield of a car, including these brands:

When should an eye care professional recommend color change lenses?

What is the abbe value for H.I 174?

Which lens design is created using the same measurements and methods as a type of LASIK surgery?

Where will you find the Kodak IDS and the Shamir Spark?