glaucomatous halo


halo

 [ha´lo] a circular structure, such as a luminous circle seen surrounding an object or light.Fick's halo a colored circle appearing around a light, experienced by wearers of contact lenses.halo glaucomato´sus (glaucomatous halo) a narrow light zone surrounding the optic disk in glaucoma.senile halo a zone of variable width around the optic disk, due to exposure of various elements of the choroid as a result of senile atrophy of the pigmented epithelium.

glau·co·ma·tous ha·lo

1. a yellowish white ring surrounding the optic disc, indicating atrophy of the choroid in glaucoma; Synonym(s): glaucomatous ring2. a halo surrounding lights, caused by corneal edema in glaucoma. Synonym(s): rainbow symptom

glau·co·ma·tous ha·lo

(glaw-kō'mă-tŭs hā'lō) 1. A yellowish white ring surrounding the optic disc, indicating atrophy of the choroid in glaucoma. 2. A halo surrounding lights, caused by corneal edema in closed-angle granule closure glaucoma.