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
Which layer of the ocular prosthesis is responsible for giving the iris its depth and three-dimensional appearance?
Answer: The hand-painted iris lamination between clear acrylic layers
The hand-painted iris is laminated between layers of clear acrylic to create a realistic depth effect in the finished prosthesis.
A patient presents with an anophthalmic socket that has developed ptosis of the upper eyelid. What is the most likely contributing prosthetic factor?
Answer: Excessive prosthetic weight causing levator muscle stretch
Excessive prosthetic weight can chronically stretch the levator muscle, contributing to acquired ptosis in anophthalmic patients.
What is the purpose of the conformer placed in the socket immediately after enucleation?
Answer: To maintain the conjunctival fornices and prevent socket contraction
A conformer maintains the conjunctival fornices open and prevents socket contraction while the socket heals after enucleation.
When modifying a stock ocular prosthesis for a pediatric patient, which growth-related consideration is most critical?
Answer: The prosthesis must be replaced or modified frequently to stimulate orbital growth
Adequate orbital volume stimulation through prosthetic modifications is essential to promote normal orbital and facial bone development in children.
Which suture technique is most commonly used to close the conjunctiva over an implant after enucleation?
Answer: Interrupted Vicryl sutures in a layered closure
A layered closure with interrupted absorbable Vicryl sutures provides secure wound closure over the orbital implant after enucleation.
What is anophthalmic syndrome?
Answer: A complex of changes including enophthalmos, superior sulcus deformity, ptosis, and lower lid laxity in the prosthetic eye
Anophthalmic syndrome describes the constellation of orbital volume deficiency changes — superior sulcus deepening, ptosis, enophthalmos, and lower lid laxity — seen in long-term prosthetic eye wearers.
When painting veins on an ocular prosthesis, red silk threads are commonly used. How are they typically secured?
Answer: Embedded in the acrylic during the final pour of scleral material
Red silk threads are embedded within the acrylic scleral layer during fabrication to realistically simulate episcleral blood vessels.