Glaucoma causes damage to the optic nerve that connects the eye to the brain, affecting eyesight and often causing headaches, vomiting and nausea.

Glaucoma is a condition that develops over time, progressively damaging the optic nerve due to a buildup of fluid and pressure around the eye. Most frequent in those aged over 70, glaucoma can lead to a total loss of vision if not treated. More commonly this condition leads to blurred vision, tenderness around the eyes, increased levels of pain in the eyes and various other symptoms including red eyes, vomiting and headaches. 

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