hypopyon


Also found in: Dictionary, Encyclopedia, Wikipedia.

hypopyon

 [hi-po´pe-on]
pus in the anterior chamber of the eye.

hy·po·py·on

(hī-pō'pi-on),
The presence of leukocytes in the anterior chamber of the eye.
[hypo- + G. pyon, pus]

hypopyon

/hy·po·py·on/ (hi-po´pe-on) pus in the anterior chamber of the eye.

hypopyon

[hīpō′pē·on]
Etymology: Gk, hypo + pyon, pus
the presence of leukocytes and an accumulation of pus in the anterior chamber of an eye, which appears as a whitish or gray fluid between the cornea and the iris. It may occur as a complication of a penetrating wound to the eye, conjunctivitis, herpetic keratitis, or corneal ulcer.
enlarge picture
Hypopyon

hy·po·py·on

(hī-pō'pē-on)
The presence of visibly layered leukocytes in the anterior chamber of the eye.
[hypo- + G. pyon, pus]

hypopyon

A layer of pus cells in the aqueous humour at the bottom of the front chamber of the eye, immediately behind the CORNEA. Hypopyon does not necessarily signify intraocular infection (ENDOPHTHALMITIS) but is often the result of sterile inflammation as in UVEITIS.

Hypopyon

A small amount of pus or collection of white cells that is visible in the front of the eye in severe cases of anterior uveitis.
Mentioned in: Uveitis

hypopyon

The presence of pus in the anterior chamber of the eye associated with infectious diseases of the cornea (e.g. severe microbial keratitis, corneal ulcer), the iris or the ciliary body (e.g. severe anterior uveitis). The pus usually accumulates at the bottom of the chamber and may be seen through the cornea. See hypopyon keratitis; Behçet's syndrome.

hy·po·py·on

(hī-pō'pē-on)
The presence of leukocytes in the anterior chamber of the eye.
[hypo- + G. pyon, pus]

hypopyon

pus in the anterior chamber of the eye.
Enlarge picture
Hypopyon in a cat.
References in periodicals archive ?
Postprocedural signs and symptoms included pain, vision loss, retinal hemorrhage, hypopyon, and vitreous haze.
Behcet's disease, currently classified as a vasculitis, is a systemic inflammatory disorder first described in 1937 as a triple symptom complex of aphthae, genital ulcers, and hypopyon uveitis (6).
8%) had ocular lesions, including relapsing anterior and posterior uveitis such as optic neuritis, vitritis, retinal vasculitis, scleritis, keratitis conjunctivitis, iridocyclitis, and hypopyon.
The choroid and retina are the most common sites of leukemic involvement (3), and leukemic involvement in the iris, ciliary body, optic nerve, and conjunctiva, as well as leukemic hypopyon have also been reported (4), (5).
The side effects of various photoinitiators were reported in the pilot study of injectable IOLs, such as conjunctival injection, corneal opacity, anterior chamber reaction, and hypopyon (9).
Behcet disease was first described in 1937 by Turkish dermatologist HulusiBehcet as a triple-symptom disease characterized by recurrent oral and genital aphthosis and anterior uveitis with hypopyon.
Total sign score included the sums of posterior synechiae, hypopyon, limbal injection, peripheral anterior synechiae, AC flare, AC cell and keratic precipitate grades.
The most commonly presenting clinical symptoms and signs of orbital Echinococcosis are: nonpulsatile, nontender exophthalmos (as in our cases), visual disturbances, papilledema, diplopia, chemosis, eyelid edema, conjunctivitis and hypopyon.
Severe inflammation and the presence of hypopyon is highly suggestive of diseases associated with HLA-B27 and Behcet's disease, although diabetes is an important cause of severe anterior segment disease in the middle-aged group.
Vitreous debris was noted during examination of 12 (57%) case-patients; hypopyon, eye inflammation, and fibrin were observed in 9 (43%), 10 (48%), and 12 (57%) case-patients, respectively.