ABO NOCE Basic Opticianry Spectacle Dispensing Procedures 2 — Questions and Answers
Question 1: When adjusting temple length for a patient, which measurement indicates the correct fit?
- Temple extends 5 mm past the ear
- Temple tip rests gently on or just behind the ear with even pressure (Correct answer)
- Temple bends sharply at the top of the ear
- Temple end piece touches the cheekbone
Correct answer: Temple tip rests gently on or just behind the ear with even pressure
The temple should curve smoothly behind the ear with light, even contact along its length for secure yet comfortable fit.
Question 2: A patient complains the bridge pinches the nose after one hour of wear. The most appropriate first adjustment is:
- Replace the nose pads with a larger size
- Widen the nose pad spread by angling the pad arms outward (Correct answer)
- Tighten the screws on the pad arms
- Adjust the pantoscopic tilt
Correct answer: Widen the nose pad spread by angling the pad arms outward
Widening the nose pad spread distributes weight over a larger area, reducing pressure and pinching sensation.
Question 3: Which pupillary distance (PD) measurement is required when dispensing single-vision lenses?
- Near PD only
- Distance PD only
- Both monocular distance and near PD
- Monocular distance PD for each eye (Correct answer)
Correct answer: Monocular distance PD for each eye
Monocular PDs (right and left separately) are required to correctly center each single-vision lens over its respective pupil.
Question 4: A frame with a 52-18-140 designation has a bridge size of:
- 52 mm
- 18 mm (Correct answer)
- 140 mm
- 34 mm
Correct answer: 18 mm
In the standard frame size notation, the middle number represents the bridge (DBL) size in millimeters.
Question 5: To correct a frame that sits too low on the patient's face, the optician should:
- Increase the pantoscopic tilt
- Raise the nose pads by angling the pad arms downward (Correct answer)
- Flatten the frame front
- Extend the temple length
Correct answer: Raise the nose pads by angling the pad arms downward
Angling the pad arms downward moves the nose pads lower on the nose, raising the frame's overall position on the face.
Question 6: When dispensing progressive addition lenses, the fitting cross should be positioned:
- At the lower lid margin
- 4 mm below the pupil center in primary gaze
- Directly over the pupil center in primary gaze (Correct answer)
- 2 mm above the pupil center in primary gaze
Correct answer: Directly over the pupil center in primary gaze
The fitting cross (MRP for the distance zone) is placed directly over the pupil in primary gaze to ensure proper corridor alignment.
Question 7: Which tool is used to measure the segment height for a bifocal lens?
- Distometer
- Pupillometer
- Millimeter ruler or segometer held while the patient wears the frame (Correct answer)
- Lensmeter
Correct answer: Millimeter ruler or segometer held while the patient wears the frame
Segment height is measured with a millimeter ruler or segometer while the patient wears the correctly adjusted frame and looks straight ahead.
ABO NOCE Basic Opticianry Spectacle Dispensing Procedures 2
When adjusting temple length for a patient, which measurement indicates the correct fit?