Question 1

You can use the lensometer to help find the pupillary distance of the lenses.

Accepted Answer

A) True 
 B)False  True

Question 2

A distometer measures the distance between the eyes.

Accepted Answer

A) True 
 B)False  False

Question 3

What does a millimeter lens sizer tool do?

Accepted Answer

A)  It measures the circumference of the lens
B)  It determines the blank size to use for the lab
C)  It determines the A and B measurements of the lens A

Question 4

What does a PD ruler not measure?

Accepted Answer

A)  Vertex distance
B)  The B measurement of a frame
C)  The pupillary distance of a patient
D)  The ED measurement of a frame

Question 5

Which is not something on a lensometer that requires maintenance?

Accepted Answer

A)  The ink well
B)  Calibration
C)  The nose rest
D)  The marker needle

Question 6

Which answer below can be measured by a lensometer?

Accepted Answer

A)  Prism in the lens
B)  The center of the lens
C)  Add power of the lens
D)  Prescription in the lens
E)  All of the above

Question 7

Angling pliers are used to:

Accepted Answer

A)  Adjust the nose pads
B)  Adjust for panoscopic angle adjustments
C)  Adjust for temple curvature

Question 8

Frames with delicate finishes are best adjusted at the end pieces by using:

Accepted Answer

A)  Nose pad pliers
B)  Snipe nosed pliers
C)  Angling pliers
D)  Double nylon jaw pliers
E)  None of the above

Question 9

An ultrasonic cleaner is used to?

Accepted Answer

A)  Spray on lenses to clean them
B)  Clean patients' frames and lenses
C)  Clean instruments

Question 10

Do you read the cylinder power first or the sphere power first in a lensometer?

Accepted Answer

A)  Cylinder power
B)  Sphere power

Question 11

You would need to set a pupilometer to which setting to get the patient's PD for 16 inches?

Accepted Answer

A)  35 cm
B)  45 cm
C)  40 cm

Question 12

Which is a handheld instrument that measures the surface power of a spectacle lens in diopters?

Accepted Answer

A)  Keratometer
B)  Lensometer
C)  Geneva Lens Clock
D)  Tonometer

Question 13

What does a remote tracer do?

Accepted Answer

A)  Decrease the turnaround time from the lab
B)  Allow storage of the exact measurements of the lens in a computer
C)  Increase the accuracy of the measurements over using the box method
D)  All of the above

Question 14

What does a pupilometer measure?

Accepted Answer

A)  The size of the pupils
B)  The distance between the pupils
C)  The height of the pupils
D)  None of the above

Question 15

Which instrument measures the curvature of the surface of a lens? Choose all that apply.

Accepted Answer

A)  Lens clock
B)  Lensometer
C)  Spherometer
D)  None of the above

Question 16

Is it necessary to verify the intermediary section of a trifocal in the lensometer?

Accepted Answer

A) True 
 B)False

Question 17

Hot air warmers should not be used for which frame types?

Accepted Answer

A)  Metal
B)  Plastic
C)  SPX
D)  Both A and C

Question 18

If you have the following prescription, how would you use the lensometer to read it in minus cylinder?
Prescription: -2.00 +3.00 X 65

Accepted Answer

A)  First transpose the power. Put the axis adjustment wheel on 180, turn the power drum far into the plus powers and begin to turn back toward you to find the sphere power at -1.00, then on to find cylinder power at +3.00
B)  First transpose the power. Put the axis adjustment wheel on 155, turn the power drum far into the plus powers and begin to slowly turn the wheel back toward you to find the sphere power at +1.00, then on to find cylinder power at -2.00. The difference between the +1.00 and the -2.00 is -3.00

Question 19

During a lensometer examination, if the examiner is severely astigmatic, they should:

Accepted Answer

A)  Wear their glasses
B)  Adjust the instrument's reticle
C)  Center the mires
D)  Stay away from the lensometer

Question 20

What is a lens box used for?

Accepted Answer

A)  It is used with the trial sets of lenses the doctors use to determine a prescription
B)  It is used as a donation box for charity
C)  It is used as a measuring device for a lens' height and width

Exam 2: Instrumentation