Glaucoma is caused when the optic nerve, which connects the eye to your brain, becomes damaged. It can lead to loss of vision if not detected and treated early on.
Dr Chris Hemmerdinger, glaucoma specialist at Optegra Eye Hospital Manchester, answers the frequently asked questions about the condition.
What is glaucoma?
According to the World Health Organisation, glaucoma is the second leading cause of blindness in the world.
While people of any age can develop glaucoma, it is most prevalent in people over the age of 40.
It is a collection of eye conditions causing progressive damage to the optic nerve, which is the main nerve that transmits images from the eye to the brain, allowing us to see.