Glaucoma paper

I'm doing a paper on Glaucoma and I need a few facts filled in.

1. I'm assuminjg the canals are clogged by eye fluid?

2. On closed angle Glaucoma, what causes the canals to be clogged so quickly?

3. Are there any treatments for acute angle Glaucoma?

I believe you can take preventive medications. In some states marijuana pills are issued. (Not lieing). But, I think once you have it it's pretty much there. It also deals with the pressure in your eyes. This is all I know.