Glaucoma is one of the major causes of blindness. Glaucoma is a group of conditions, in which high pressure inside the eye (Intraocular Pressure) damages the optic nerve of the eye. Glaucoma usually affects both the eyes. It commonly occurs in adults above 40 years of age, but can even occur in newborn babies. The vision lost due to glaucoma is irreversible and can not be regained. Hence it is very important to detect this disease as early as possible and treat early to preserve vision.