an eye disease that damages the optic nerve and impairs vision (sometimes progressing to blindness)
Contrary to popular belief, glaucoma is not always caused by elevated intraocular pressure.
source: WordNet 3.0
Dimness or abolition of sight, with a diminution of transparency, a bluish or greenish tinge of the refracting media of the eye, and a hard inelastic condition of the eyeball, with marked increase of tension within the eyeball.
