Can orbital hydatid cyst presents with acute visual loss? case report and literature review

Hydatid cyst [HC] disease is zoonotic disease caused by larvae of Echinococcus granulosus which is commonly affecting liver and lung or any organ or tissue in our body. central nervous system [CNS] can be involved at any place with or without brain involvement including skull, orbit, vertebral column and spinal cord. Orbital infestation is constituting less than 1% of all hydatid disease cases. There are few reported cases of orbital HC in the literatures that presented with acute visual loss and proptosis. In this article we are reporting a case of intramuscular orbital HC that presented with sever and acute visual loss with proptosis following trivial road traffic accident.