Oculoplastics and Orbital Disease Flashcards
6 cards from real Board Certified Ophthalmologist practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Oculoplastics and Orbital Disease flashcards as text
Dacryocystorhinostomy (DCR) is performed to treat which condition?
Answer: Nasolacrimal duct obstruction
DCR creates a new drainage passage between the lacrimal sac and the nasal cavity to bypass a blocked nasolacrimal duct.
Which nerve is at greatest risk of injury during lower eyelid blepharoplasty?
Answer: Infraorbital nerve
The infraorbital nerve exits the infraorbital foramen just inferior to the orbital rim and is at risk of injury during lower eyelid or midface procedures.
A 65-year-old presents with lower eyelid turning inward causing corneal irritation. Slitlamp shows trichiasis and punctate keratopathy. What is the diagnosis?
Answer: Entropion
Entropion is inward rotation of the eyelid margin causing lashes to rub against the cornea, leading to irritation and keratopathy.
Which of the following best describes the mechanism of involutional ectropion?
Answer: Horizontal lid laxity and disinsertion of the lower eyelid retractors
Involutional ectropion results from age-related horizontal lid laxity and dehiscence of lower eyelid retractors, causing the lid to evert away from the globe.
What is the most common benign eyelid lesion in adults?
Answer: Chalazion
A chalazion, caused by obstruction of a meibomian gland leading to a sterile lipogranulomatous reaction, is the most common benign eyelid lesion in adults.
In evaluating a patient for enophthalmos after orbital trauma, which imaging study best quantifies orbital volume change?
Answer: CT scan with 3D reconstruction
CT with 3D reconstruction allows precise measurement of orbital volume loss and bony defect size, guiding surgical planning for enophthalmos repair.