Dry throat is a rough, scratchy, sometimes itchy feeling in the throat. The most common cause of dry throat is drying out of the mucus membranes, often as a result of exercise, sleeping with your mouth open, breathing through your mouth, living in a dry environment, or simply not drinking enough fluids.
Glaucoma is a group of eye diseases which result in damage to the optic nerve and vision loss. A major risk factor is increased pressure in the eye.The disorders can be roughly divided into two main categories:  open-angle  and  closed-angle  (or  angle closure ) glaucoma.econdary glaucoma refers to any case in which another disease, trauma, drug or procedure causes increased eye pressure, resulting in optic nerve damage and vision loss, and may be mild or severe. It can be due to eye injury, inflammation, a tumor, or advanced cases of cataracts or diabetes.
Please Share! On this page: Glaucoma and eye anatomy â¢ Blood flow and the optic nerve. The cause of glaucoma generally is a failure of the eye to maintain an appropriate balance between the amount of internal (intraocular) fluid produced and the amount that drains away. Underlying reasons for this imbalance usually relate to the type of glaucoma you have.