ocular larva migrans


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Related to ocular larva migrans: visceral larva migrans

larva

 [lahr´vah] (pl. lar´vae) (L.)
1. an independent, immature stage in the life cycle of an animal, in which it is markedly unlike the parent and must undergo changes in form and size to reach the adult stage.
2. something that resembles such an immature animal.
larva cur´rens a rapidly progressive creeping eruption caused by autoinoculation of larvae of Strongyloides stercoralis that migrate to and mature at the anus in intestinal infections with the parasite.
cutaneous larva mi´grans (larva mi´grans) a convoluted threadlike skin eruption that appears to migrate, caused by the burrowing beneath the skin of roundworm larvae, particularly of the species Ancylostoma; similar lesions are caused by the larvae of botflies. Called also creeping eruption.
ocular larva migrans infection of the eye with larvae of the roundworm Toxocara canis or T. cati, which may lodge in the choroid or retina or migrate to the vitreous; on the death of the larvae, a granulomatous inflammation occurs, the lesion varying from a translucent elevation of the retina to massive retinal detachment and pseudoglioma.
visceral larva migrans a condition due to prolonged migration by the skin larvae of animal nematodes in human tissue other than skin; commonly caused by larvae of the roundworms Toxocara canis and T. cati.

oc·u·lar lar·va mi·grans

visceral larva migrans involving the eyes, primarily of older children; clinical symptoms include decreased visual acuity and strabismus.

Ocular larva migrans (OLM)

A syndrome associated with toxocariasis, in which the eye is invaded by migrating larvae.
Mentioned in: Roundworm Infections
References in periodicals archive ?
In the single case of ocular larva migrans, a larva compatible in size with Baylisascaris procyonis was visualized on retinal imaging.
Ocular larva migrans should be ruled out prior to initiation of therapy as steroid use is always recommended for treatment of this presentation.
Cases of ocular larva migrans can cause a variety of clinical disease including retinal granulomas, retinal detachment, uveitis, keratitis, vitreous abscesses, and endophthalmalitis.
procyonis have a noted tendency to invade the brain and eye, causing neural larva migrans and ocular larva migrans. Clinical neural or ocular larva migrans is an accidental consequence of somatic migration and larval distribution.
Ocular larva migrans does not exhibit liver trapping of larvae and is associated with low antibody concentrations in the hosts.