<unk>  is an inflammatory syndrome caused by a delayed (aka type-IV) hypersensitivity reaction to one or more antigens. The triggering antigen is usually a bacterial protein (particularly from Staphylococcus aureus), but may also be a virus, fungus (particularly Candida albicans), or nematode.
Phlyctenular keratoconjunctivitis
Superior limbic keratoconjunctivitis
Ocular larva migrans
Vernal keratoconjunctivitis
Actinic conjunctivitis
Ligneous conjunctivitis
Adenoviral keratoconjunctivitis
Sympathetic ophthalmia