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Glaucoma is characterized by optic nerve damage which results in vision loss, and elevated eye pressure (intraocular pressure) is the primary risk factor. There is growing evidence that other factors may predispose a person to glaucoma damage, including circulation to the eye and optic nerve.
The causes of ocular hypertension are: Excess Aqueous Humor Production: Aqueous humor is a fluid present in the eye between the lens and cornea. It is produced by the ciliary body. When the production of aqueous is higher, it can cause an increased pressure in the eye.