Also known as "the silent thief of vision" due to its lack of symptoms

until end stages, glaucoma causes a painless loss of vision, starting with

the peripheral vision. It is caused by an increase in the pressure inside

the eye causing compression and subsequent damage to the optic

nerve - the nerve that connects the eye to the brain. Left untreated, this

will lead to blindness. If detected early, any damage can be slowed or

stopped using either eye drops or surgical methods in advanced cases.

For this reason, it is recommended to have an eye exam every 12-24

months.