FIG. 4.

(Left) Microfilaria of O. volvulus (arrow) in the superficial corneal stroma (hematoxylin and eosin stain). (Middle left) L. loa beneath the conjunctiva. (Left and middle left panels reprinted from reference 137a with permission from the publisher.) (Middle right) Adult L. loa being extracted from the subconjunctival space. (Right) A serpentine Dirofilaria migrating beneath the lateral aspect of the bulbar conjunctiva. (Middle right and right panels reprinted from reference 53a with permission from the publisher.)