CCA Ocular Prosthetics 3

Question 1

What is the recommended cleaning frequency for an ocular prosthesis?

Accepted Answer

Cleaning every 3–6 months by the anaplastologist, with daily socket hygiene by the patient

Answer

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.

Question 2

A patient's ocular prosthesis has developed a rough posterior surface. What is the most likely clinical consequence?

Accepted Answer

Increased discharge and conjunctival irritation

Answer

A rough posterior surface creates friction against the conjunctiva, causing irritation, increased mucous discharge, and potential socket inflammation.

Question 3

In ocular prosthetics, what does the term 'enophthalmos' describe in the context of an anophthalmic socket?

Accepted Answer

A sunken appearance of the prosthesis due to insufficient orbital volume

Answer

Enophthalmos in an anophthalmic patient refers to the sunken, recessed appearance caused by inadequate posterior orbital volume support.

Question 4

Which material is most commonly used for fabricating custom ocular prostheses today?

Accepted Answer

Polymethyl methacrylate (PMMA) acrylic

Answer

Polymethyl methacrylate (PMMA) acrylic is the standard material for custom ocular prostheses due to its biocompatibility, durability, and excellent optical properties.

Question 5

What is the primary purpose of a peg or post in a motility-coupled ocular prosthesis?

Accepted Answer

To mechanically couple the prosthesis to the orbital implant, transmitting implant movement to the prosthesis

Answer

A peg or post drilled into a motility implant creates a mechanical link that transfers implant movement to the overlying prosthesis, improving motility.

(CCA) Certified Clinical Anaplastologist Practice Test

(CCA) Certified Clinical Anaplastologist Practice Test

CCA Ocular Prosthetics 3