The Indiana Bleb Appearance Grading Scale (IBAGS) can be used to evaluate the appearance of a glaucoma filtering bleb. This can be used to monitor its appearance over time.
Parameters:
(1) height (H)
(2) extent (E) in terms of the radial clock face
(3) vascularity (V)
(4) Siedel test (S)
|
Parameter |
Finding |
Points |
|
height |
flat |
0 |
|
|
slightly raised |
1 |
|
|
mildly elevated |
2 |
|
|
moderately elevated |
3 |
|
|
high |
4 |
|
extent |
< 1 hour |
0 |
|
|
1 to 2 hours |
1 |
|
|
2 to 4 hours |
2 |
|
|
> 4 hours |
3 |
|
vascularity |
avascular |
0 |
|
|
minimal |
1 |
|
|
mild |
2 |
|
|
moderate |
3 |
|
|
extensive |
4 |
|
Siedel test |
no leak |
0 |
|
|
pinpoint leaks |
1 |
|
|
streaming leak |
2 |
Specialty: Ophthalmology
