To determine the presence of parasites in the eye, tests such as slit lamp microscopy, fundoscopy and laboratory tests are required.
Parasites can be found in the eyes, such as toxoplasmosis, conjunctival sucking nematodes, and conjunctival fly maggots.
Parasites that live on the surface of the eye, such as conjunctival sucking nematodes and conjunctival fly maggots, can often be detected by slit-lamp microscopy.
Intraocular parasites, such as Toxoplasma gondii, can be detected by fundoscopy and in combination with laboratory tests, such as testing intraocular fluid.
Suspected parasites of the eye should be examined by an ophthalmologist in a hospital to confirm the diagnosis and to guide treatment, such as through eye cleansing measures and vitrectomy surgery.