glaucoma
Concise Oxford English Dictionary © 2008 Oxford University Press:
glaucoma /glɔːˈkəʊmə/
▶noun Medicine a condition of increased pressure within the eyeball, causing gradual loss of sight.
– derivatives
glaucomatous adjective.
glaucomatous adjective.
– origin C17: via L. from Gk glaukōma, based on glaukos ‘bluish green or grey’ (because of the grey-green haze in the pupil).
'glaucoma' also found in these Oxford entries:

