Subconjunctival Dirofilariasis Presenting as Orbital Cellulitis.

Human ocular Dirofilariasis is a relatively rare, zoonotic disease, caused by a filarial nematode, Dirofilaria repens. This parasitic infestation usually presents as a subconjunctival nodule with hyperemia. The authors present a case of subconjunctival dirofilariasis in a 91-year-old gentleman, who presented with manifestations of orbital cellulitis. The live worm was surgically removed and identified to be D. repens.