Quiz For Draft Free Form Lenses

1 point(s)

Free-form lenses are also known as:

direct to surface
direct lens technology
digital lens processing
biconvex

1 only

Correct Incorrect Correct answer

1 & 2

Correct Incorrect Correct answer

1, 2, & 3

Correct Incorrect Correct answer

1, 2, 3, & 4

Correct Incorrect Correct answer

1 point(s)

___________________________ guides the production of each lens.

A skilled optical journeyman

Correct Incorrect Correct answer

A state-of-the art fining process

Correct Incorrect Correct answer

A sophisticated software program specifically calculated to each Rx

Correct Incorrect Correct answer

Accurate frame measurements

Correct Incorrect Correct answer

1 point(s)

________________ refers to a lens design which can be used to overcome optical aberrations and mechanical limitations characteristic of traditional surfacing.

optimized

Correct Incorrect Correct answer

framitized

Correct Incorrect Correct answer

personalized

Correct Incorrect Correct answer

homogenized

Correct Incorrect Correct answer

1 point(s)

_______________________ refers to PAL designs which are modified to a specific fitting, frame or adjustment characteristics.

optimized

Correct Incorrect Correct answer

framitized

Correct Incorrect Correct answer

personalized

Correct Incorrect Correct answer

homogenized

Correct Incorrect Correct answer

1 point(s)

_______________________ refers to PAL designs which are created specifically to the prescription and individual viewing habits of the user.

optimized

Correct Incorrect Correct answer

framitized

Correct Incorrect Correct answer

personalized

Correct Incorrect Correct answer

homogenized

Correct Incorrect Correct answer

1 point(s)

Which of the following is not part of traditional surfacing process?

generating

Correct Incorrect Correct answer

fining

Correct Incorrect Correct answer

polishing

Correct Incorrect Correct answer

position of wear

Correct Incorrect Correct answer

1 point(s)

Which of the following in not an advantage of free-form lenses.

They are not limited by pre-determined base curves

Correct Incorrect Correct answer

They eliminate the need for stock lenses

Correct Incorrect Correct answer

They minimizes PAL non-adapts

Correct Incorrect Correct answer

They all automatically come with AR coating

Correct Incorrect Correct answer

1 point(s)

A free-form generator can not be used to:

produce virtually any shape regardless of how complex

Correct Incorrect Correct answer

make molds used in surfacing semi-fi nished lenses

Correct Incorrect Correct answer

manufacturer complete lenses on demand

Correct Incorrect Correct answer

surface contact lenses

Correct Incorrect Correct answer

1 point(s)

A customized lens incorporates all of those listed below except

the patent’s complete Rx

Correct Incorrect Correct answer

the frame dimensions

Correct Incorrect Correct answer

the wearing position of the completed eyewear

Correct Incorrect Correct answer

injection molded frame

Correct Incorrect Correct answer

1 point(s)

Which of the following is not correct?

a free-form generator can be used to create a standard non-customized lens

Correct Incorrect Correct answer

free-form manufacturing makes customization possible

Correct Incorrect Correct answer

free-form manufacturing will always produce a better lens

Correct Incorrect Correct answer

the term free-form refers to a manufacturing process, not a lens

Correct Incorrect Correct answer

1 point(s)

The sophisticated computer software used in free-form lens manufacturing allows for the input of:

a prescription

Correct Incorrect Correct answer

frame fitting details such as face form, pantoscopic tilt, and vertex distance

Correct Incorrect Correct answer

frame dimensions such as “A” measurement, “B” measurement and effective diameter

Correct Incorrect Correct answer

frame material

Correct Incorrect Correct answer

1 point(s)

Ideally, each prescription requires a unique:

cylinder axis

Correct Incorrect Correct answer

edge thickness

Correct Incorrect Correct answer

base curve

Correct Incorrect Correct answer

AR coating

Correct Incorrect Correct answer

1 point(s)

After a lens is manufactured on a free-form generator the next step is:

fining

Correct Incorrect Correct answer

polishing using conformable tools

Correct Incorrect Correct answer

cutting and edging

Correct Incorrect Correct answer

AR coating

Correct Incorrect Correct answer

1 point(s)

Free-form generators can produce: all of those listed except:

progressive surfaces

Correct Incorrect Correct answer

aspheric surfaces

Correct Incorrect Correct answer

atoric surfaces

Correct Incorrect Correct answer

hi-index glass

Correct Incorrect Correct answer

1 point(s)

Free-form lenses can be designed with:

the progressive curve on the back side of the lens

Correct Incorrect Correct answer

the progressive portion on both the front and the back

Correct Incorrect Correct answer

base curves fabricated specifically for each individual lens

Correct Incorrect Correct answer

curves that accommodate

Correct Incorrect Correct answer

1 point(s)

Progressive lenses can be made with:

traditional front molded designs that have been made using molds that have been digitally manufactured

Correct Incorrect Correct answer

traditional front molded designs with digital back side surfacing

Correct Incorrect Correct answer

front side spherical curves with the progressive design on the back of the lens. Also known as “internal” technology

Correct Incorrect Correct answer

curves that automatically accommodate for the correction of presbyopia

Correct Incorrect Correct answer

1 point(s)

Taking accurate measurements _________________________.

remains a critical ingredient for success when fitting any PAL

Correct Incorrect Correct answer

is no longer necessary when fitting free-form lenses

Correct Incorrect Correct answer

is only necessary with higher cylinder powers

Correct Incorrect Correct answer

Is only necessary when incorporating personalized wearing parameters

Correct Incorrect Correct answer

1 point(s)

Which of the following are necessary when fitting any progressive lens?

monocular PDs, preferably with the use of a pupilometer
monocular fitting height using a PD ruler to measure from the lowest point of each eyewire to the center of the patient’s pupil
verify the lens cut-out utilizing the manufacturer’s cut-out chart
pre-adjust the frame for positive frame form and pantoscopic tilt

1 only

Correct Incorrect Correct answer

1 & 2

Correct Incorrect Correct answer

1, 2, & 3

Correct Incorrect Correct answer

1, 2, 3 & 4

Correct Incorrect Correct answer

1 point(s)

A key point in presenting free-form lenses to the patient is to emphasize that:

the lenses are custom made especially for their prescription
the lenses are easy to adapt to
levels of unwanted astigmatism are lowered
they can accommodate relatively unusual powers such as lenses containing high cylinder power

1 only

Correct Incorrect Correct answer

1 & 2

Correct Incorrect Correct answer

1, 2, & 3

Correct Incorrect Correct answer

1, 2, 3 & 4

Correct Incorrect Correct answer

1 point(s)

Free form lenses are available in the following parameters:

+4.00D to -6.00D sphere on a 2.00D cylinder

Correct Incorrect Correct answer

+10.00D to -17.00D sphere on a 5.00 D cylinder

Correct Incorrect Correct answer

+2.00D to -2.00D sphere on 2.00 D cylinder

Correct Incorrect Correct answer

+10.00D to -12.00D sphere on a 4.00D cylinder

Correct Incorrect Correct answer

1 point(s)

Patients benefit from 15.00 D from free-form lenses except

they require little to virtually no adaptation process

Correct Incorrect Correct answer

no “swim & sway” complaints

Correct Incorrect Correct answer

each lens can be custom made to precise measurements

Correct Incorrect Correct answer

they come out of the machine grooved

Correct Incorrect Correct answer

1 point(s)

Most lenses made with free-form technology

have the same fundamentals

Correct Incorrect Correct answer

use aspheric or atoric curves

Correct Incorrect Correct answer

can reduce aberrations by levels by levels greater than those achieved with conventional techniques

Correct Incorrect Correct answer

do not necessarily result in a better lens design

Correct Incorrect Correct answer

1 point(s)

Monocular PDs, monocular fitting height, vertex distance, face form, pantnoscopic tilt, are generally required when ordering _________________

atoric single vision lenses

Correct Incorrect Correct answer

position-of-wear lenses

Correct Incorrect Correct answer

frametization

Correct Incorrect Correct answer

PALs processed using traditional surfacing techniques

Correct Incorrect Correct answer

1 point(s)

The manufacturing technique based on free-form PAL designs that are customized based on the shape and dimensions of the frame is known as:

atoric single vision

Correct Incorrect Correct answer

position-of-wear

Correct Incorrect Correct answer

frametization

Correct Incorrect Correct answer

head & eye movement techniques

Correct Incorrect Correct answer

1 point(s)

“Position of Wear,” “Retina Forward Design” and “Zeiss Measurement Value System” are terms that refer to:

compensated prescriptions

Correct Incorrect Correct answer

prescribed power

Correct Incorrect Correct answer

aspheric designs

Correct Incorrect Correct answer

atoric designs

Correct Incorrect Correct answer

1 point(s)

A distinction is made between the measured and prescribed power because:

the trial lens and the spectacle lens have a different shape
the trial lens and the spectacle lens have a different power
different paths taken by the rays of light during measurement in the phoropter and the paths taken when actually being worn by the patient
no such distinction is necessary

1 only

Correct Incorrect Correct answer

1, 2, & 3

Correct Incorrect Correct answer

1 & 3

Correct Incorrect Correct answer

4

Correct Incorrect Correct answer

1 point(s)

In “Position of Wear” lenses:

the wearer experiences exactly the same power through the near vision which was found to be best during the refraction

Correct Incorrect Correct answer

the measured and prescribed power through the distance vision varies significantly

Correct Incorrect Correct answer

the center of rotation induces unwanted prism

Correct Incorrect Correct answer

internal lens design is not available

Correct Incorrect Correct answer

1 point(s)

In “Position of Wear” lenses the purpose for including the specifi ed power for near vision on the lens packaging:

helps to identify the lens material and index of refraction

Correct Incorrect Correct answer

allows the base curve to be verified

Correct Incorrect Correct answer

allows the distance vision Rx to be checked in the lensometer

Correct Incorrect Correct answer

allows the near vision Rx to be checked in the lensometer

Correct Incorrect Correct answer

1 point(s)

The important benefits of all aspheric progressive designs are:

a more attractive appearance

Correct Incorrect Correct answer

they aren’t sold in discount optical stores

Correct Incorrect Correct answer

they provide enhanced vision

Correct Incorrect Correct answer

a & c

Correct Incorrect Correct answer

1 point(s)

When progressive curves are on the backside which of the following is not true:

visual fields are expanded

Correct Incorrect Correct answer

magnification differences in various parts of the lens are minimized

Correct Incorrect Correct answer

ease of wearing is improved

Correct Incorrect Correct answer

visual acuity is comprised

Correct Incorrect Correct answer

1 point(s)

Free form has been attempted using many different formats. An early and generally unsuccessful method was ______________________________.

Free form using an algorithm

Correct Incorrect Correct answer

Free form using aspherical back curves

Correct Incorrect Correct answer

Free form using light ray dispersion

Correct Incorrect Correct answer

Free form using binocular PD measurements

Correct Incorrect Correct answer

1 point(s)

Which manufacturer invented Design by Prescription?

Seiko

Correct Incorrect Correct answer

Shamir

Correct Incorrect Correct answer

Zeiss

Correct Incorrect Correct answer

Hoya

Correct Incorrect Correct answer

1 point(s)

Why are modern manufacturers providing lenses considered High Definition?

To improve clarity by using tint as an additional option

Correct Incorrect Correct answer

To capitalize on the term as used in reference to hand held devices and televisions

Correct Incorrect Correct answer

To limit the use of front aspheric designs

Correct Incorrect Correct answer

To limit the use of atoric designs

Correct Incorrect Correct answer

1 point(s)

Some high definition lenses are designed specifically to aid patients who use hand held devices and computers. Which of these is not a high definition design?

Aveo

Correct Incorrect Correct answer

Zeiss Digital

Correct Incorrect Correct answer

Essilor 360 DS

Correct Incorrect Correct answer

Zeiss Gradal

Correct Incorrect Correct answer

1 point(s)

What is another term for Position of Wear design?

Bitoric free form

Correct Incorrect Correct answer

As worn free form

Correct Incorrect Correct answer

Aspheric progressive design

Correct Incorrect Correct answer

Multigressive design

Correct Incorrect Correct answer

1 point(s)

Physiologically Mapped Optics is the special technology that is proprietary to ___________________.

Rodenstock

Correct Incorrect Correct answer

Shamir

Correct Incorrect Correct answer

Zeiss/SOLA

Correct Incorrect Correct answer

Gunnar

Correct Incorrect Correct answer

1 point(s)

What is special about the Rodenstock Perfection technology?

uses a special algorithm to determine atoric curves

Correct Incorrect Correct answer

It takes pupillary response to light into consideration when fitting a patient

Correct Incorrect Correct answer

It makes use of 1.67 materials only

Correct Incorrect Correct answer

It is based upon mathematical configurations

Correct Incorrect Correct answer

1 point(s)

These lenses use the “Internal Free Form” based design method:

Seiko Surmount and Superior lenses

Correct Incorrect Correct answer

Gunnar Excessive lenses

Correct Incorrect Correct answer

Shamir Reversi lenses

Correct Incorrect Correct answer

SOLA Elan lenses

Correct Incorrect Correct answer

1 point(s)

Shamir has invented a free form technology that works from the end point of considering what a patient wants their vision to be, which is called _________________________________.

Free Bird

Correct Incorrect Correct answer

Reverse design or Eyepoint

Correct Incorrect Correct answer

Shamir So Accurate

Correct Incorrect Correct answer

Inventive blank

Correct Incorrect Correct answer

1 point(s)

Which lens can be ordered in a blank size as large as 85 mm?

Gunnar

Correct Incorrect Correct answer

Aveo

Correct Incorrect Correct answer

Elan

Correct Incorrect Correct answer

Surmount

Correct Incorrect Correct answer

Quiz For Draft Free Form Lenses

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