TEST ANSWERS "All the answers are here, and they're free!"
POINTS
TO PONDER
More
and more eyewear is being purchased online. The number one complaint of brick-and-mortar
patrons ...
"Nobody adjusted my glasses. They just handed
them to me."
So, for these consumers there's little difference between the service
they receive in many of today's dispensaries and buying glasses online.
Opticianry
is ultimately defined by how well the eyewear
makes
contact with the Patient, not by the number of Customers served.
Therefore, a conscious, precise, and personalized process of frame selection, lens design,
and in-place, hands-on fitting
is required. In too
many cases unrealistically excessive sales goals override the Optician's
mission of providing professional health care, whereby the personalized,
custom fitting of eyewear is given only the most minor consideration,
if any.
Just
as a Dentist cannot practice dentistry without direct Patient contact,
the
Optician cannot effectively dispense without tactile contact with
the Patient.
An unskilled eyewear merchant routinely hands over prescription glasses
with no hands-on assessment,
nor the appropriate ‘touch-and-feel’
required
to custom fit the eyewear.
Hands-on-the-Patient Opticians however, determine
for themselves by sense of touch
how the frame feels in lieu of asking the Patient. OpticalWorkshops.com
Answers
1.
Which country has the highest use of AR 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.
Survey
questions are optional. Please answer each question as briefly as possible.
31.
Do you think today's Eye Care Professionals are adequately trained
in hands-on, in-place,
on-the-face assessment and fitting
of corrective eyewear?
Books,
lectures and tests can take an Optician's skills
only so far.
It is time for touch-and-feel, Hands on the Patient training.
Only one on one craftsmanship training provides this. Craftsmanship cannot be learned virtually.
"Handcrafted frame fitting, i.e., touch and feel, hands-on dispensing,
cannot be outsourced to lectures or virtual sources. It is an art form,
which requires actual and multi-dimensional contact with the patient."
HANDS ON THE PATIENT
WORKSHOP TRAINING AVAILABLE
HERE "It is incumbent on those who know, to teach those who do not know.
It is incumbent on those who do not know to surrender their ego."