Multifocal choroiditis (MFC) is an inflammatory disorder characterized by swelling of the eye (called uveitis) and multiple lesions in the choroid, a layer of blood vessels between the white of the eye and the retina. Symptoms include blurry vision, floaters, sensitivity to light, blind spots and mild eye discomfort. Though the cause is unknown, multifocal choroiditis is seen most frequently in women ages 20 to 60, and usually affects both eyes. MFC is generally treated with steroid medication that can be taken orally or injected into the eye. Multifocal choroiditis is a chronic condition, thus symptoms may return or worsen even after successful treatment.