Glaucoma is a condition in which damage to the Optic nerve (nerve which carries nerve fibres or images to the brain) leads to progressive, irreversible vision loss. Since there are no early symptoms hence it is very difficult for the person to realise that he suffers from it.
It can be treated with Eye drops, medication & surgery. Best way to prevent damage from Glaucoma is to get comprehensive Eye check-up every year if you have a family history or above the age of 40 years. For more details, kindly contact an Ophthalmologist.