I have actually read links online that say to use it in the eye--not a safe thing to do. In the Mercks Manual they advise to use 5% cresol solution by a vet under anesthesia after physically removing the worm. Oddly cresol is the active ingredient of Lysol, and there are some links that recommend it for treatment. Here is some of the text:
Eggs of Oxyspirura mansoni, Manson eyeworm, are deposited in the eye, reach the pharynx via the nasolacrimal duct, are swallowed, passed in the feces, and ingested by the Surinam cockroach, Pycnoscelus surinamensis. Larvae reach the infective stage in the cockroach. When infected intermediate hosts are eaten, liberated larvae migrate up the esophagus to the mouth and then through the nasolacrimal duct to the eye, where the cycle is completed. Other insect species may also serve as the intermediate host.
Cestodes require an intermediate host (eg, insects, crustaceans, earthworms, or snails). Floor layers, breeders, and broilers are infected with Raillietina cesticillus by ingestion of the intermediate host, small beetles that breed in contaminated litter. Cage layers in unscreened houses may become infected with Choanotaenia infundibulum by eating its intermediate host, the house fly. Litter beetles in proximity may also serve as intermediate hosts.
Oxyspirura mansoni is a slender nematode, 12–18 mm long, found beneath the nictitating membrane of chickens and other fowl in tropical and subtropical regions. The parasite causes various degrees of inflammation, lacrimation, corneal opacity, and disturbed vision.