#12 Gonioscopy Normal v. Abnormal Findings Flashcards
What is Grade 0 in the Shaffer angle Grading?
a. CB easily visible
b. At least SS visible
c. Only TM visible (this refers to posterior TM)
d. Only SL visible and possible anterior TM
e. CLOSED, no structures visible, apex of corneal wedge not visible
e
What is Grade 2 in the Shaffer Angle Grading?
a. CB easily visible
b. At least SS visible
c. Only TM visible (this refers to posterior TM)
d. Only SL visible and possible anterior TM
e. CLOSED, no structures visible, apex of corneal wedge not visible
c
What is Grade 1 in the Shaffer Angle Grading?
a. CB easily visible
b. At least SS visible
c. Only TM visible (this refers to posterior TM)
d. Only SL visible and possible anterior TM
e. CLOSED, no structures visible, apex of corneal wedge not visible
d
What is Grade 3 in the Shaffer Angle Grading?
a. CB easily visible
b. At least SS visible
c. Only TM visible (this refers to posterior TM)
d. Only SL visible and possible anterior TM
e. CLOSED, no structures visible, apex of corneal wedge not visible
b
What is Grade 4 in the Shaffer Angle Grading?
a. CB easily visible
b. At least SS visible
c. Only TM visible (this refers to posterior TM)
d. Only SL visible and possible anterior TM
e. CLOSED, no structures visible, apex of corneal wedge not visible
a
Will the pupil block when 1/2 TM is visible in any 2 quadrants?
NO
Will the pupil block when there’s SS visible?
NO
What is the dilating agent of choice?
Tropicamide because it’s reversible if the angle is closing
Should you use Neosynephrine or Tropicamide to dilate your patients if their angle isn’t very open?
use Tropicamide because Neosynephrine makes it much more difficult to pharmaceutically reverse and/or manage than the use of Tropicamide alone.
Peripheral Anterior synechiae is a very thick (wide) fibers that extend from the iris root to the ___, ___, or ___.
SS, TM, SL
Peripheral Anterior Synechiae is associated with ________, ________, and __________.
closed angles, past/present, inflammation (uveitis)
How do you know if it’s peripheral anterior synechiae or iris processes you’re looking at when viewing gonio on the angle?
Synechiae will continue to hold against the angle wall, whereas processes becomes lacier and will see angle wall behind them and no adhesions.
Which gonio lens can you do corneal indentation with?
4 mirror
Can you do indentation on the cornea with gonio 4 mirror/Flange?
NO
How does the TM look like in pigment dispersion syndrome?
you will see the TM darkly pigmented
