Gonio 2

Question 1

Van Herick grade based on most posterior structure seen

Answer 1

CB-4. Wide open.
SS-3. Wide open.
TM (both)- 2. Moderately open, possible closure.
Schwalbe’s line- 1. Narrow, occludable.
Cornea- 0. Partially or completely closed.

Question 2

Clinical indications for gonio

Answer 2

Narrow angle based on van heroic 
Primary open angle glaucoma 
Glaucoma suspect 
Narrow angle glaucoma 
Do annually if pt has glaucoma

Question 3

Contraindications for gonio

Answer 3

Recent ocular trauma- may cause more bleeding
Recent ocular surgery- risk of wound leak or suture damage
During angle closure attack- cloudy cornea due to fluid entering. Can’t see angle.

Question 4

How can you determine where schwalbee’s line is?

Answer 4

Find by running optic section across. Where it splits is where schwalbees line is = edge of K

Question 5

Clinical indication for corneal gonio

Answer 5

Differentiate between appositional and synechial angle closure.

In appositional, pressure will cause structures to become visible.

Question 6

4 mirror gonio angles

Answer 6

All 4 mirrors are 64 degrees and all look at angle.

Question 7

PAS

Answer 7

Peripheral anterior synechia