Oleander
The October 2022 edition of the journal Cornea contains an article by Dr. Prashant Tailor and colleagues. It describes a patient who was injured in the eye by an oleander leaf. Plant-related injuries to the eye often require different treatment than other injuries to the eye. In this case, the patient developed severe swelling of the front of the eye and intense inflammation inside the eye.
The unexpectedly exuberant inflammation and swelling of the eye was attributed to the fact that the eye injury was caused by oleander. So keep that oleander (and other plants) out of your eyes!