GLAUCOMA
glaucoma
(noun) 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® 3.1
Etymology
Noun
glaucoma (countable and uncountable, plural glaucomas)
(pathology) An eye disease or disorder that is defined as a characteristic optic neuropathy, or disease of the optic nerve, possibly, if untreated, leading to damage of the optic disc of the eye and resultant visual field loss due to lack of communication between the retina and the brain, which can lead to blindness.
Source: Wiktionary
Glau*co"ma, n. Etym: [L., fr. Gr. (Med.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition