Surgical Procedures and Treatments Flashcards
6 cards from real Vision and Ophthalmology practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Surgical Procedures and Treatments flashcards as text
Selective laser trabeculoplasty (SLT) reduces IOP by:
Answer: Selectively targeting pigmented trabecular cells to improve outflow
SLT uses a 532 nm frequency-doubled Nd:YAG laser to selectively target melanin-containing trabecular cells, triggering a biological response that improves aqueous outflow without coagulative damage.
A scleral buckle procedure treats rhegmatogenous retinal detachment by:
Answer: Indenting the sclera to bring the choroid closer to the detached retina
Scleral buckling places a silicone band or sponge around the eye to indent the scleral wall, relieving vitreoretinal traction and approximating the retina to the RPE.
Photodynamic therapy (PDT) with verteporfin is used for which condition?
Answer: Predominantly classic CNV in wet AMD
PDT involves IV verteporfin (photosensitizer) that accumulates in CNV; activation with 689 nm laser causes selective thrombosis of the abnormal vessels.
Corneal transplantation (DSAEK/DMEK) selectively replaces which layer of the cornea?
Answer: Endothelium and Descemet's membrane
DSAEK (Descemet's Stripping Automated Endothelial Keratoplasty) and DMEK replace only the diseased endothelium and Descemet's membrane, preserving the recipient's stroma.
Botulinum toxin injection for strabismus works by:
Answer: Temporarily paralyzing the overacting muscle, allowing the antagonist to stretch it
Botulinum toxin (Botox) injected into an overacting extraocular muscle temporarily paralyzes it, allowing the antagonist to pull the eye toward alignment during the paralysis period.
Which surgical procedure is used to treat posterior capsule opacification (PCO) after cataract surgery?
Answer: Nd:YAG laser posterior capsulotomy
Nd:YAG laser posterior capsulotomy creates an opening in the opacified posterior capsule, immediately restoring vision in a quick outpatient procedure.