Lecture 11 intro to gonio Flashcards
if Van Herrick is a grade ____, then do gonio
2
(T or F) all glaucoma patients/suspects you should always assess the outflow mechanism via gonio
true (it helps confirm narrow/closed angle vs open angle glaucoma)
what is iridodialysis?
separation of iris from ciliary body
flashes of light is a classic symptom of _____ _____
retinal detachment
All of the following are contraindications for gonio except:
A) corneal abrasion
B) hyphema
C) EBMD/RCE
D) angle neovascularization
D) angle neovascularization. You want to do gonio to check for this.
which one of the following is the current method of gonio:
A) direct
B) Koeppe
C) indirect
C) indirect (has mirrors). direct (aka Koeppe) is no longer used
With the 3 mirror gonio, what is the purpose of the thumbnail, rectangular, trapezoid, and center lens
thumbnail mirror(60 deg)=structures of the angle
rectangular(66 deg)=view equator to beginning of ora
trapezoid (76 deg)=view posterior pole to equator
center lens=to view posterior pole, macula, and nerve head
describe syncope (vasovagal)
sudden loss of consciousness caused by transient cerebral hypoperfusion as a result in drop in HR and BP thus decrease in blood flow to the brain. usually cause by anxiety or fear or uncertainty of procedures.
what is an oculocardiac reflex (aka Aschner reflex)?
decrease in HR and BP due to compression of globe or traction of EOM
aqueous humor is formed by the _____ ______.
ciliary epithelium
the filtering portion of the angle is the _____ _____
trabecular meshwork
the posterior 2/3 of the TM is ____ ____
schlemm’s canal
the most anterior structure in the angle is _____ _____
schwalbe’s line (which marks the end of descemets and the transition from cornea to sclera)
A concave iris is associated with ____ and a convex iris is associated with ____
A) myopes, hyperopes
B) hyperopes, myopes
A) myopes, hyperopes
