HYPOPYON
\hˌa͡ɪpə͡ʊpjˈɒn], \hˌaɪpəʊpjˈɒn], \h_ˌaɪ_p_əʊ_p_j_ˈɒ_n]\
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By William R. Warner
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This name has been given to small abscesses between the laminae of the cornea, as well as to different purulent collections in the chambers of the eye; hence, some pathologists have distinguished Hypopyon of the chamhera from Hypopyon of the cornea. In abscesses of the chambers, the purulent matter is mixed with the aqueous humour, which it renders turbid; and is deposited particularly at the lower part of the eye; forming behind the cornea a kind of whitish crescent, that rises more or less before the pupil, and closes it entirely or in part. It requires the use of local and general antiphlogistics, and sorbefacients. At times, it is necessary to puncture the cornea and evacuate the pus. Hypopion was used by Galen to signify an effusion of blood under the eyelids and tunica conjunctiva, or under the lower eyelid. - Blancard.
By Robley Dunglison
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[Greek] A collection of pus in the bottom of the anterior chamber of the eye. H. keratitis, ulcer of the cornea (especially traumatic) associated with h. and iritis.
By Alexander Duane
By Willam Alexander Newman Dorland