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
Cycloablation procedures for refractory glaucoma target which structure?
Answer: Ciliary body (to reduce aqueous production)
Cycloablation (cyclodestruction) using laser or cryotherapy destroys ciliary body tissue to reduce aqueous humor production and lower IOP in refractory cases.
The most common complication of trabeculectomy in the early postoperative period is:
Answer: Hypotony with shallow anterior chamber
Early postoperative hypotony (IOP too low) with a flat or shallow anterior chamber is the most frequent complication, caused by overfiltration or wound leak.
Phakic intraocular lenses (pIOLs) are used in patients who:
Answer: Have high refractive error not suitable for LASIK with natural lens preserved
Phakic IOLs (e.g., Visian ICL) are implanted in front of or behind the natural lens to correct high myopia or hyperopia where corneal refractive surgery is contraindicated.
During cataract surgery, the continuous curvilinear capsulorhexis (CCC) is performed to:
Answer: Create a round, controlled opening in the anterior capsule
CCC creates a smooth, circular anterior capsule opening that provides a stable rim for IOL centration and prevents radial capsular tears during nucleus removal.
Glaucoma drainage devices (tube shunts) create an alternative outflow pathway by:
Answer: Routing aqueous from the anterior chamber to an external equatorial plate
Glaucoma drainage implants (e.g., Ahmed, Baerveldt) use a tube that shunts aqueous from the anterior chamber to an equatorial episcleral plate where it forms a bleb.
Which vitreoretinal surgical technique is used to repair complex retinal detachments with proliferative vitreoretinopathy (PVR)?
Answer: Pars plana vitrectomy with membrane peeling and silicone oil tamponade
Complex retinal detachments with PVR require pars plana vitrectomy to remove the vitreous and peel contractile membranes, followed by silicone oil tamponade for long-term retinal support.