Glaucoma is an eye disorder characterized by damage to the optic nerve that serves to carry the messages of light from the eye to the brain. Optic nerve damage is caused by excess fluid humor that fills the inside of the eyeball. Eye fluid produced by tissues in front of the eyeball is actually serves to bring food to the cornea and lens of the eye. The liquid eyes will also maintain pressure within the eyeball to keep its shape well maintained. Fluid pressure generated by the eye is called intraocular pressure.
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