1. Which country has the highest use of AR lens coatings?

United States.
Japan.
France.
Germany.

2. What are the two chief Patient benefits of Anti-Reflective coatings?

Better light transmission & less scratching.
People look better and see better.
Less ghost images and better vision.
Can be surfaced ultra thin with increased impact resistance.

3. The relatively low acceptance of AR coating in the United States has been due largely to:

a) the popularity of plastic lens materials and plastic lenses require more advanced
technology to minimize reflections.
b) the reluctance of many optical professionals to present it convincingly.
c) AR coating is sometimes perceived as fragile and difficult to maintain.
d) all of the above.

4. The first introduction of AR coating for ophthalmic purposes occurred in _______ and was for glass lenses only.

1892
1939
1957
1974

5. AR coating is so thin that it is measured in ________.

millimeters
micrometers
nanometers
angstrom units

6. AR coatings are deposited on transparent media by a process known as:

a) vacuum deposition.
b) thin film evaporation.
c) degassing.
d) ultrasound.

7. An observer of lenses which have not been AR coated can see reflections:

a) from the front side of the lenses only.
b) from the back side of the lenses only.
c) from the edges of the lenses only.
d) from both the front and the back side of the lenses.

8. Concentric circles which create a “coke bottle” effect can be caused by:

a) AR coatings.
b) internal reflections off the edge of a thick lens.
c) ghost images.
d) internal reflections of a thick plus lens.

9. Why do high index lenses benefit more from AR coatings than conventional index lenses?

High index materials naturally reflect more light.
High index lenses are more expensive.
High index lenses inherently filter UV radiation.
High index lenses can be ground thinner.

10. When two light waves are added together, the size of the new wave doubles. This is an example of:

a) constructive interference.
b) destructive interference.
c) non-interference.
d) transillumination.

11. When a light wave is added to the reverse of itself, the two waves cancel each other out. This is an example of:

a) constructive interference.
b) destructive interference.
c) non-interference.
d) transillumination.

12. The first step in the AR coating process is:

a) UV coating.
b) careful inspection for scratches or surfacing imperfections.
c) ultrasonic cleaning.
d) degassing.

13. A recent significant enhancement to the AR coating process is:

a) UV coating.
b) SR coating.
c) outer hydrophobic coating.
d) edge coating.

14. Which Patient benefit of AR coating is the easiest to demonstrate?

People look better with AR coating.
There are less ghost images during night driving.
People see better with AR coating.
The benefits of back surface coating on sunwear.

15. The principal cause of the concentric rings seen in higher minus lenses is ____________.

back side reflections
edge reflections
ghost images
edge polishing

16. What is the major reason that people see better with AR coated lenses?

Fewer front side reflections.
Fewer back side reflections.
The glare reduction properties.
Light transmission is increased to 99.6%.

17. Which of the following statements is true?

Ghost images in minus lenses are displaced toward the Optical Center.
Ghost images in minus lenses are displaced away from the OC.
Ghost images are not a concern with minus lenses.
AR coating has no effect on ghost images.

18. Why do aspheric lenses work better with AR coatings?

They have a lower light transmission.
They are more apt to have stronger corrections.
Their flatter back surfaces create more back side reflections.
Their flatter front surfaces create more front side reflections.

19. What is the best way to demonstrate improved contrast enhancement?

Hold a lens that is partially AR coated over printed material.
Let the Patient view themselves wearing an AR coated sample.
Let the Patient view another person wearing an AR coated sample.
Wear an AR coated lens in the bright sunlight.

20. What special equipment is required to edge AR coated stock lenses?

Patternless edgers.
Router type edgers.
Dry vacuum edgers.
Conventional edgers work fine.

21. What is the best way to keep lenses from fading during the AR coating process?

Tint the lens after the AR coating is applied.
Tint the lens darker than required then bleach slightly to remove surface dye.
Lighten the tint after the AR coating is applied.
Always UV treat the lenses before tinting.

22. Should sun lenses be AR coated?

Never.
Always.
Back side only.
Polarized lenses only.

23. What is the function of the degassing oven in AR coating?

Pre-heat the lenses.
Remove all moisture from the lens.
Thoroughly clean the lens.
Apply the thin film coating to the lens.

24. AR coated lenses _______________________.

naturally filter UV light
do not contain any UV protection
should never be specially treated to filter UV
should always be specially treated to filter UV

25. AR coating _____________________.

should never be applied to Transitions lenses
can prolong the life of Transitions lenses
can shorten the life of Transitions lenses
should always be applied to Transitions lenses

26. Which of the following lens types can be AR coated?

Laminates.
Photochromics.
Polarized.
All of the above.

27. When pricing AR coating, the recommended procedure is to:

a) charge as little as possible.
b) charge as much as possible.
c) itemize each lens add-on separately.
d) “bundle” the cost of AR into the overall lens price.

28. Care and maintenance of AR coated lenses should be explained to Patients:

a) verbally only.
b) in writing only.
c) verbally and in writing.
d) the new outer hydrophobic coating makes it unnecessary to take any special steps in maintaining the lenses.

29. How much does AR coating equipment cost?

Less than $100,000.00.
Between $100,000.00 and $ 250,000.00.
Between $250,000.00 and $500,000.00.
Between $500,000.00 and $1,000,000.00.

30. Which of the following is the best cleaner for an AR coated lens?

Alcohol.
Hand soap.
Liquid detergent.
Acetone.

The following survey questions are optional.
Please answer each question as briefly as possible.

31. Do you think today's Dispensers are adequately trained in hands-on, in-place, on-the-face assessment and fitting of corrective eyewear?

32. If no, what can be done about it?

33. What can you do about it?