Glaucoma

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.

A group of eye conditions that damage the optic nerve.

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"