Loa Loa is a type of nematode that is also a parasite. This specific type of nematode can be found in the eye. The Loa Loa is also referred to as the "eye worm". Loa Loa are contracted by a bite from a deer and mango fly, after the Loa Loa has enterd the body it travels to the eye where you can become diseased. The loa loa do not have a cardiovascualar system but they also use difusion like all other nematodes.