Spectacle Dispensing Procedures Flashcards
7 cards from real ABO NOCE Basic Opticianry practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Spectacle Dispensing Procedures flashcards as text
When adjusting temple length for a patient, which measurement indicates the correct fit?
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.
A patient complains the bridge pinches the nose after one hour of wear. The most appropriate first adjustment is:
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.
Which pupillary distance (PD) measurement is required when dispensing single-vision lenses?
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.
A frame with a 52-18-140 designation has a bridge size of:
Answer: 18 mm
In the standard frame size notation, the middle number represents the bridge (DBL) size in millimeters.
To correct a frame that sits too low on the patient's face, the optician should:
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.
When dispensing progressive addition lenses, the fitting cross should be positioned:
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.
Which tool is used to measure the segment height for a bifocal lens?
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.