FREE NOCE Spectacle Dispensing Procedures Questions and Answers

Question 1

A patient wearing new progressive addition lenses complains that they must lift their chin excessively to read clearly. What is the most likely cause of this issue?

Accepted Answer

The segment height was measured too low.

Answer

The pantoscopic tilt is insufficient.

Answer

The vertex distance is too short.

Answer

The frame has excessive face form wrap.

Question 2

What is the primary optical purpose of applying an appropriate amount of pantoscopic tilt to a pair of spectacle frames?

Accepted Answer

To better align the lens's optical axis with the eye's visual axis as it rotates downward for near vision.

Answer

To increase the effective vertex distance for high-plus prescriptions.

Answer

To reduce the overall weight of the frame on the patient's nose.

Answer

To prevent the eyelashes from touching the back surface of the lenses.

Question 3

According to ANSI Z80.1 standards for prescription ophthalmic lenses, which of the following represents the acceptable tolerance for the cylinder axis of a lens with a power of +3.00 -1.25 x 090?

Accepted Answer

± 3 degrees

Answer

± 7 degrees

Answer

± 5 degrees

Answer

± 14 degrees

Question 4

A patient is fitted with their first pair of flat-top 28 (FT-28) bifocals and complains that the floor seems blurry and 'jumps' when they walk, particularly on stairs. This common adaptation issue is most likely caused by:

Accepted Answer

The segment height being measured too high.

Answer

The inherent image jump properties of the flat-top segment design.

Answer

The base curve of the lens being too steep for the patient.

Answer

An incorrect monocular pupillary distance measurement.

Question 5

When selecting a frame for a patient with a high myopic prescription (e.g., -10.00 D), which frame characteristic is MOST critical for minimizing lens thickness and weight?

Accepted Answer

A small, round eye size that centers the patient's pupils well within the lens aperture.

Answer

A large, aviator-style lens shape to maximize the field of view.

Answer

A frame constructed from a lightweight material like titanium.

Answer

A zyl frame with a thick rim to hide the edge thickness.

Question 6

An optician is fitting a patient with an Executive (Franklin-style) bifocal. What is the standard anatomical landmark used to determine the correct segment height for this type of lens?

Accepted Answer

The upper margin of the patient's lower eyelid.

Answer

The center of the patient's pupil.

Answer

The lower limbus (the edge of the iris).

Answer

2mm below the lower pupil margin.