The mechanism of action for use of marijuana as glaucoma treatment is not known

1. Currently the only treatment for cataracts is eye surgery.
http://en.wikipedia.org/wiki/Cataract#Treatment
2. Although studies show affective treatment of glaucoma by marijuana, the mechanism of action to lower Intraocular pressure is not known.
http://one.aao.org/CE/PracticeGuidelines/Therapy_Content.aspx?cid=9871fa42-cf40-4c1f-b05c-c816d5f93126
3. Men are 1.6 times more likely than women to have mild cognitive impairment, even after factoring in such variables as age and marital status.
http://www.medicinenet.com/script/main/art.asp?articlekey=88734