GlaucomaGlaucoma is a disease that causes the buildup of pressure in the eyes. It can also cause the optic nerve to atrophy, which can later impair vision and even lead to blindness. Even before that happens, the patient may experience a number of symptoms including reduced peripheral vision, pain in the eyes, nausea, vomiting, and blurred vision.

Glaucoma is one of the first conditions in which marijuana has been determined to be beneficial. Aside from helping ease nausea associated with glaucoma, medical marijuana may also reduce pressure buildup in the eyes.