chemosis

from WordNet (r) 3.0 (2006)

chemosis
    n 1: edema of the mucous membrane of the eyeball and eyelid
         lining

from The Collaborative International Dictionary of English v.0.48

Chemosis \Che*mo"sis\, n. [NL., fr. Gr. ? a swelling of the
   cornea resembling a cockleshell, fr. ? a gaping, hence a
   cockleshell.] (Med.)
   Inflammatory swelling of the conjunctival tissue surrounding
   the cornea. -- {Che*mot"ic}, a.
   [Webster 1913 Suppl.]