leucoma


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Related to leucoma: leukoma

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]

leucoma

A dense, white opacity of the CORNEA resulting from disease or injury. A leucoma near the centre of the cornea causes blindness, but vision can be restored by corneal grafting.

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.
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References in periodicals archive ?
Adherent leucoma is a condition, in which a portion the iris is attached to the cicatrisised portion of the cornea forming a white plaque on the sclera.
Diagnostico Grupo de edad Total 6-7 8-9 10-12 Sano 82,92 82,93 82,96 82,94 Ametropias 10,69 10,64 10,62 10,65 Conjuntivitis 4,08 4,07 4,00 4,05 Blefaritis 1,01 0,80 1,03 1,01 Esotropia 0,65 0,66 0,66 0,67 Pingueculitis 0,53 0,53 0,44 0,50 Estrabismo 0,53 0,44 0,53 0,50 ptosis congenita 0,48 0,00 0,00 0,16 Leucoma 0,00 0,24 0,00 0,08 Total 100,00 100,00 100,00 100,00
La biomicroscopia del ojo derecho muestra moderada inyeccion conjuntival y limbitis marcada, sin secrecion en fondos de saco ni reaccion papilar o folicular y a nivel corneal se observan un leucoma temporal de 1 por 1 mm y area de desepitelizacion superonasal de 2 por 3 mm de diametro, de fondo limpio con minimos infiltrados intraestromales perilesionales, la cual se debrida parcialmente con hisopo de algodon.
Con toda la incerteza que se quiera en cuanto a la fijacion del texto, el autor ha buscado el paralelismo entre dos pares de terminos, leucomatum est (= glaucoma tumens) et lacrimatorium, por una parte, y claritatem et angulorum asperitudinem (sedat), por otra, en donde leucoma (= glaucoma) se corresponde con claritas (7) y lacrimatorium con los anguli oculares.
My breath is hot from impatience, which ensures me a round field of vision, protecting me from leucoma.
More uncommon, however, are his quotations from Pseudo-Aristotle's Book on Stones, which are sometimes different from those in Ruska's edition, and sometimes contain additional material.(88) These quotations are thus important for research on the work's complicated textual tradition.(89) For instance, the following recipe attributed to Aristotle for the treatment of leucoma does not feature in Ruska's edition.
The browntail moth, Euproctis chrysorrhoea, and satin moth, Leucoma salicis, which are in the same family but with flying females, spread much faster - about 26 and 28 miles per year.
The primary lesions included bacterial corneal ulcers in 8 eyes, immune-related corneal ulcers in 4 eyes, corneal leucoma in 2 eyes, fungal corneal ulcers in 2 eyes, and keratoconus in 1 eye.