Eye
Ocular Larva Migrans
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Ocular Larva Migrans
, Ocular Toxocariasis
See Also
Visceral Larva Migrans
Epidemiology
Age of onset: 5-8 years old (mean)
Incidence
: 700 cases per year in United States
Pathophysiology
Roundworm infection (
Toxocariasis
)
Spreads to eye from concurrent
Visceral Larva Migrans
Symptoms
Gradual or sudden unilateral visual loss
Eye discomfort
Symptoms of
Visceral Larva Migrans
often absent
Strabismus
Signs
Slit Lamp
Exam
Leukocoria
Endophthalmitis
Choroid
al
Granuloma
(subretinal
Granuloma
tous mass)
Posterior pole
Granuloma
Peripheral
Granuloma
with traction bands
Labs
Eosinophilia
(rare)
Eosinophil
s in
Aqueous Humor
Differential Diagnosis
Retinoblastoma
Strabismus
Exudative retinitis (Coat's disease)
Complications
Ocular inflammation with scarring with risk of
Vision Loss
Course
Ocular symptoms may present up to 10 years after infection
Management
No satisfactory treatment
Trial of
Corticosteroid
s
Surgery may be indicated in severe cases
See
Visceral Larva Migrans
Resources
CDC
Toxocariasis
http://www.cdc.gov/parasites/toxocariasis/
References
Woodhill (2014) Am Fam Physician 89(10): 803-11 [PubMed]
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