Question 1

How can you check a lens clock to make sure it is still calibrated correctly?

Accepted Answer

A) Send it to the lab and have them check it 
B) Place all three points of the clock on a flat surface, depress until all points touch. The dial should read zero. 
C) Test against the base curve of a lens you already know to be accurate to see if it is the same 
A) Send it to the lab and have them check it 
B) Place all three points of the clock on a flat surface, depress until all points touch. The dial should read zero. 
C) Test against the base curve of a lens you already know to be accurate to see if it is the same

Question 2

Vertex distance is measured by using which tool?

Accepted Answer

A) Pupilometer 
B) PD ruler 
C) Distometer 
A) Pupilometer 
B) PD ruler 
C) Distometer

Question 3

Screwdriver tips can be replaced when they are damaged or worn.

Accepted Answer

A) True 
 B)False

Question 4

The first step in using a lensometer to check glasses is to?

Accepted Answer

A) Mount the glasses on the lens stage 
B) Power calibrate the eye piece for you 
C) Turn the power drum to the highest plus power 
A) Mount the glasses on the lens stage 
B) Power calibrate the eye piece for you 
C) Turn the power drum to the highest plus power

Question 5

A lensometer can read up to how many diopters of prism without using additional prism rings?

Accepted Answer

A) Three 
B) Six 
C) Five 
A) Three 
B) Six 
C) Five

Question 6

What measures the thickness of a lens up to 19 mm?

Accepted Answer

A) A lens clock instrument 
B) A lens thickness caliper instrument 
C) A PD ruler 
A) A lens clock instrument 
B) A lens thickness caliper instrument 
C) A PD ruler

Question 7

Axis pliers are used to:

Accepted Answer

A) Adjust the temple curve 
B) Turn the axis of a lens in a frame 
C) Give the frame more panoscopic tilt 
A) Adjust the temple curve 
B) Turn the axis of a lens in a frame 
C) Give the frame more panoscopic tilt

Question 8

Vertex distance can be measured with a:

Accepted Answer

A) Cross cylinder 
B) PAM 
C) Distometer 
D) Pinhole disc 
A) Cross cylinder 
B) PAM 
C) Distometer 
D) Pinhole disc

Question 9

What does it mean when the mires cannot be centered in the lensometer?

Accepted Answer

A) The stage must be move up 
B) The stage must be moved down 
C) The lens prism has been ground into the lens 
D) The power dial needs to be rotated 
A) The stage must be move up 
B) The stage must be moved down 
C) The lens prism has been ground into the lens 
D) The power dial needs to be rotated

Question 10

What is another word for a lens clock?

Accepted Answer

A) A base curve checker 
B) A caliper 
C) A spherometer 
A) A base curve checker 
B) A caliper 
C) A spherometer

Question 11

Which feature(s) is(are) best to have in a pair of pliers to make sure you won't damage a frame's finish when adjusting? Choose all that apply.

Accepted Answer

A) They should be made of titanium 
B) They should have a protective plastic jaw 
C) They should be lightweight 
D) They should have rubberized handles 
A) They should be made of titanium 
B) They should have a protective plastic jaw 
C) They should be lightweight 
D) They should have rubberized handles

Question 12

Vertical and horizontal prism is measured in a lensometer by:

Accepted Answer

A) The intersection of the mires in the lensometer is offset both vertically and horizontally from the center of the grid 
B) Making sure that both lenses have the same prism 
C) None of the above 
A) The intersection of the mires in the lensometer is offset both vertically and horizontally from the center of the grid 
B) Making sure that both lenses have the same prism 
C) None of the above

How can you check a lens clock to make sure it is still calibrated correctly?

Vertex distance is measured by using which tool?

Screwdriver tips can be replaced when they are damaged or worn.

The first step in using a lensometer to check glasses is to?

A lensometer can read up to how many diopters of prism without using additional prism rings?

What measures the thickness of a lens up to 19 mm?

Axis pliers are used to:

Vertex distance can be measured with a:

What does it mean when the mires cannot be centered in the lensometer?

What is another word for a lens clock?

Which feature(s) is(are) best to have in a pair of pliers to make sure you won't damage a frame's finish when adjusting? Choose all that apply.

Vertical and horizontal prism is measured in a lensometer by:

Dispensing Procedures

Laws Regulations and Standards

Ocular Anatomy Physiology and Pathology

Ophthalmic Optics

Ophthalmic Products

Filters

Exam 2: Instrumentation

How can you check a lens clock to make sure it is still calibrated correctly?

Vertex distance is measured by using which tool?

Screwdriver tips can be replaced when they are damaged or worn.

The first step in using a lensometer to check glasses is to?

A lensometer can read up to how many diopters of prism without using additional prism rings?

What measures the thickness of a lens up to 19 mm?

Axis pliers are used to:

Vertex distance can be measured with a:

What does it mean when the mires cannot be centered in the lensometer?

What is another word for a lens clock?

Which feature(s) is(are) best to have in a pair of pliers to make sure you won't damage a frame's finish when adjusting? Choose all that apply.

Vertical and horizontal prism is measured in a lensometer by:

Dispensing Procedures

Laws Regulations and Standards

Ocular Anatomy Physiology and Pathology

Ophthalmic Optics

Ophthalmic Products

Filters