leukoma

(redirected from corneal opacity)
Also found in: Dictionary, Thesaurus, Encyclopedia.

leukoma

 [loo-ko´mah] (pl. leuko´mata)
A dense, white corneal opacity. Causes include untreated syphilis, corneal inflammation or ulceration, and trachoma. Called also walleye.
leukoma adhae´rens a white tumor of the cornea enclosing a prolapsed adherent iris.

leu·ko·ma

(lū-kō'mă),
A dense white opacity of the cornea.
[G. whiteness, a white spot in the eye, fr. leukos, white]

leu·ko·ma

(lū-kō'mă)
A dense white opacity of the cornea.
Synonym(s): leucoma.
[G. whiteness, a white spot in the eye, fr. leukos, white]

leukoma

Dense, white, corneal opacity caused by scar tissue. A localized leukoma appears as a whitish scar surrounded by normal cornea. A generalized leukoma involves the entire cornea, which appears white, often with blood vessels coursing over its surface. Visual impairment depends on the location and extent of the leukoma. If the opacity is faint, it is called a nebula. Note: also spelt leucoma. See hyperacuity; corneal ulcer.
References in periodicals archive ?
Keratoplasty was needed in many cases where corneal opacity hindered the vision but due to lack of keratoplasty facilities in our hospital patients were referred to other hospitals where keratoplasty facilities were available and hence most of them were lost to follow-up.
To rule out other infectious diseases such as bovine herpesvirus type 1 (BHV-1), bovine viral diarrhea virus (BVDV), and toxoplasmosis, which can cause eye problems such as corneal opacity, cataracts (Potgieter, 2004), and conjunctivitis (Weiblen, 1992), the sera of the calf and its dam were tested.
CORNEAL OPACITY 38.90% LAGOPHTHALMUS 14.28% ENTROPION 6.34% ECTROPION 9.52% KERATITIS 14.28% TRICHIASIS 4.76% SYNECHIAE 7.93% KERATOPATHY 4.76% Note: Table made from pie chart.
Additionally, mice receiving antibody against MIP-2 had decreased corneal opacity and reduced neutrophil infiltration [19].
Myofibroblasts produce the anomalous extracellular matrix which contributes to corneal opacity [17].
Interlaboratory assessment of the bovine corneal opacity and permeability (BCOP) assay.
However, three eyes had moderate corneal opacity and their VEPs were abnormal.
Those with advanced trachomatous complications like trichiasis and corneal opacity were excluded.
The changes in ECM composition and organization, which are characterized by collagen type III and proteoglycans low in keratan sulfate components [5], as well as less transparent myofibroblasts [4], contribute to corneal opacity. Successful treatments for corneal scarring are lacking.
Dogs may develop bronchopneumonia, conjunctivitis, photophobia, and a transient corneal opacity, "blue eye", which may occur after clinical recovery as result of anterior uveitis and oedema [9, 10].
The composition exhibits at least one of the following: an acute oral toxicity of about > 5000mg/kg, an acute dermal toxicity of about > 5000mg/kg, an acute eye irritation of slight corneal opacity and reversible eye irritation within 7 days, and/or an acute dermal irritation of moderate irritation at 72 hours that is reversible; and the composition is dermal non-sensitizer.