Lecture 11 intro to gonio Flashcards Preview

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Flashcards in Lecture 11 intro to gonio Deck (14)
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1

if Van Herrick is a grade ____, then do gonio

2

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)

3

what is iridodialysis?

separation of iris from ciliary body

4

flashes of light is a classic symptom of _____ _____

retinal detachment

5

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.

6

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

7

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

8

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.

9

what is an oculocardiac reflex (aka Aschner reflex)?

decrease in HR and BP due to compression of globe or traction of EOM

10

aqueous humor is formed by the _____ ______.

ciliary epithelium

11

the filtering portion of the angle is the _____ _____

trabecular meshwork

12

the posterior 2/3 of the TM is ____ ____

schlemm's canal

13

the most anterior structure in the angle is _____ _____

schwalbe's line (which marks the end of descemets and the transition from cornea to sclera)

14

A concave iris is associated with ____ and a convex iris is associated with ____

A) myopes, hyperopes
B) hyperopes, myopes

A) myopes, hyperopes