Glaucoma is an eye disease where the optic nerve is damaged due to sufficiently high intra ocular pressure. This is common at the age of 40. This leads to blindness but if it is diagnosed at an early stage it can be cured.

Aqueous humour is a liquid transparent fluid that continually produces and releases in the eye through small molecular paths and then drains to the blood vessels. However, if these vessels are blocked due to any reason then the fluid starts accumulating within the eye, which in turn increases the pressure affecting the optical nerve causing Glaucoma.