ahoy exclamation. âº a âshout used, âespecially by âpeople in âboats, to âattract âattention: Ahoy there!
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.
Other conditions that may cause eye redness include: 1  trauma or injury to the eye. 2  a rapid increase in eye pressure that results in pain (acute glaucoma). 3  scratches of the cornea caused by irritants or overuse of contact lenses.