Your eyes are the most precious gift that have been bestowed by nature. However, diseases like glaucoma are silent killers of your eyesight. If not detected early and not treated properly the disease can damage your optic nerve leading to permanent blindness. Optic nerve carries impulses from the retina (area where light focusses in your eye) to your brain for processing. Your eyes naturally produce aqueous humor which is a jelly like substance and is present between the cornea and the lens of your eye. The fluid is also drained from your eyes regularly for maintaining the correct pressure in your eyes. If this mechanism fails it starts building up pressure inside your eyes and damages your optic nerve, this condition is called glaucoma.