Frame Adjustment Techniques by Material 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 Frame Adjustment Techniques by Material flashcards as text
A patient's monel frame develops a green discoloration where it contacts the skin after adjustment. This is most likely caused by:
Answer: The frame's nickel content reacting with skin perspiration
Monel contains nickel which reacts with skin acids and perspiration, producing a greenish oxidation; some patients also experience nickel allergy symptoms.
When adjusting a rimless (drill mount) frame, extra caution is required because:
Answer: The lenses are more susceptible to cracking at the drill holes when stressed
Drill-mounted rimless lenses bear stress directly at the drill holes, so aggressive or improper adjustments can crack the lens at those points.
An optician is adjusting the pantoscopic tilt of a zyl frame. Which tool is most commonly used to make this adjustment?
Answer: Angling pliers after softening the frame in a frame warmer
Pantoscopic tilt on a plastic frame is set by warming the frame in a frame warmer and then using angling pliers to rotate the lens/eye wire relative to the temple.
Which frame material is most at risk for becoming brittle and cracking if adjusted repeatedly without adequate heat?
Answer: Zyl (cellulose acetate)
Zyl (cellulose acetate) loses plasticizers over time and can become brittle; repeated cold bending accelerates stress fractures, making proper heating essential for each adjustment.
A patient complains that their plastic frame feels tight across the temples after a proper adjustment session. The BEST next step is to:
Answer: Re-warm the temples and use temple-spreading pliers to open them slightly
Re-warming acetate or plastic temples allows them to be spread slightly with temple-spreading pliers to reduce lateral pressure on the patient's head.
The term 'skull temple' refers to a temple style that:
Answer: Wraps tightly behind the ear with a sharp bend close to the skull
A skull temple has a sharply angled bend that curves closely behind the ear and along the skull, providing secure retention without extending down onto the ear.
When adjusting a stainless steel frame that has been coated with a colored epoxy finish, the optician must be careful to:
Answer: Avoid using abrasive tools or excessive bending that could crack or peel the coating
Epoxy or painted coatings on metal frames are vulnerable to cracking if bent too sharply or abraded by tools, leaving unsightly bare metal exposed.