Lecture 12 gonio abnormal findings Flashcards Preview

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Flashcards in Lecture 12 gonio abnormal findings Deck (11)
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1

Use the "over the hill technique" on ____ irises

steep

2

Yo help identify an inconspicuous schwalbes line you can create a "V" shaped light beam where the apex falls onto schwalbe's line. To do this you will need a(n) ____ beam. the blurrier part of the "V" will be the ____ ____, and the clearer side of the "V" will be the ______ ____.

optic section, anterior cornea, posterior cornea

3

in regards to angle depth, inferior angles are usually ____ and superior angles are usually ____.

A) wider, narrower
B) narrower, wider

A) wider, narrower

4

how can you tell there is blood in in schlemms canal?

its red on angle horizon above CB

5

What is Sampaolesi's line?

extra pigment scattered above Schwalbe's line

6

schaffers angle grading system

4=wide open,CB most post
3=open, some CB/SS most post
2=narrow, some SS/TM most post
1= extremly narrow, ant TM/SL most post
0=closed

(**never dilate 1 or 2**)

7

when is it safe to dilate?

if you can see ½ TM in 2 quadrants (180 deg or 6 clock hours) clock hours do not have to run concurrently

8

What is LPI?

Laser peripheral iridotomy, (blasts a hole in iris to create outflow if angle is closing)

9

(T or F) pupillary block is likely if PAS is in 180 degrees or more

true

10

what is the main difference between peripheral anterior synechiae (PAS) and iris processes?

adhesion vs. apposition. PAS is stuck to angle while iris processes are just touching angle

11

what is the purpose of 4-mirror indentation gonio?

to tell difference between PAS and iris processes