Ocular Prosthetics Flashcards
7 cards from real CCA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Ocular Prosthetics flashcards as text
What is the recommended cleaning frequency for an ocular prosthesis?
Answer: Cleaning every 3–6 months by the anaplastologist, with daily socket hygiene by the patient
The standard recommendation is professional cleaning and polishing every 3–6 months, while patients maintain daily socket hygiene without necessarily removing the prosthesis each day.
A patient's ocular prosthesis has developed a rough posterior surface. What is the most likely clinical consequence?
Answer: Increased discharge and conjunctival irritation
A rough posterior surface creates friction against the conjunctiva, causing irritation, increased mucous discharge, and potential socket inflammation.
In ocular prosthetics, what does the term 'enophthalmos' describe in the context of an anophthalmic socket?
Answer: A sunken appearance of the prosthesis due to insufficient orbital volume
Enophthalmos in an anophthalmic patient refers to the sunken, recessed appearance caused by inadequate posterior orbital volume support.
Which material is most commonly used for fabricating custom ocular prostheses today?
Answer: Polymethyl methacrylate (PMMA) acrylic
Polymethyl methacrylate (PMMA) acrylic is the standard material for custom ocular prostheses due to its biocompatibility, durability, and excellent optical properties.
What is the primary purpose of a peg or post in a motility-coupled ocular prosthesis?
Answer: To mechanically couple the prosthesis to the orbital implant, transmitting implant movement to the prosthesis
A peg or post drilled into a motility implant creates a mechanical link that transfers implant movement to the overlying prosthesis, improving motility.
When determining iris position for a custom ocular prosthesis, the primary reference point is:
Answer: The pupil position of the contralateral eye in primary gaze
The pupil of the contralateral eye in primary gaze serves as the primary reference for placing the iris on the prosthesis to achieve symmetric appearance.
A patient returns with a new ocular prosthesis that appears to have an exotropic alignment. What adjustment should be considered?
Answer: Reposition the iris medially by modifying or remaking the prosthesis
An exotropic (outward-turned) appearance is corrected by repositioning the iris nasally (medially) on the prosthesis during modification or fabrication.