NOCE Spectacle Dispensing Procedures 2

Question 1

When adjusting temples for a patient with asymmetrical ears, which measurement is most critical?

Accepted Answer

Temple length to bend

Answer

The temple length to bend must be individually set for each ear to ensure the frame sits level on an asymmetrical face.

Question 2

A patient complains that new progressive lenses feel like they are 'swimming.' The most likely cause is:

Accepted Answer

Incorrect corridor length for the frame

Answer

A corridor that is too long or short for the patient's frame causes the swim effect because the optical zones are misaligned with the visual axis.

Question 3

Which tool is used to measure the distance between the back surface of a lens and the patient's cornea?

Accepted Answer

Distometer

Answer

A distometer (also called a vertex distance gauge) measures the back vertex distance from the lens to the corneal apex.

Question 4

When a plastic frame is too tight at the temples, the correct adjustment involves:

Accepted Answer

Heating the frame and spreading the temples

Answer

Plastic frames must be heated to their softening point before widening the temples to avoid cracking the material.

Question 5

A patient's bifocal segment consistently drops below the lower lid margin after dispensing. The dispenser should:

Accepted Answer

Raise the segment height by adjusting the nose pads

Answer

Raising the nose pads lifts the frame and moves the segment upward to the proper position at or just below the lower lid.

NOCE - National Opticianry Competency Examination Practice Test