Lecture 12 gonio abnormal findings

Question 1

Use the “over the hill technique” on ____ irises

Answer 1

steep

Question 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 ______ ____.

Answer 2

optic section, anterior cornea, posterior cornea

Question 3

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

A) wider, narrower
B) narrower, wider

Answer 3

A) wider, narrower

Question 4

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

Answer 4

its red on angle horizon above CB

Question 5

What is Sampaolesi’s line?

Answer 5

extra pigment scattered above Schwalbe’s line

Question 6

schaffers angle grading system

Answer 6

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)

Question 7

when is it safe to dilate?

Answer 7

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

Question 8

What is LPI?

Answer 8

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

Question 9

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

Answer 9

true

Question 10

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

Answer 10

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

Question 11

what is the purpose of 4-mirror indentation gonio?

Answer 11

to tell difference between PAS and iris processes