Sympathetic ophthalmia apparently originates in a penetrating wound of the ciliary region of one eye, which communicates with the air. As long as it is not too large, if this wound is fully covered without delay with a fold of conjunctiva, its under surface being in contact with the wound so that it becomes adherent to it, the consensus is, I think, that it is so great a preventive that sympathetic inflammation, which otherwise would occur, may be warded off. I agree with this belief, as I have used it successfully. There seem to be three varieties, or rather degrees of severity of sympathetic ophthalmia:
The first variety is a sympathetic irritation, which goes no further; that is, the media remain clear and no visible signs of disease are found. Finally, after the removal of the injured eye, this condition disappears, and the eye becomes quiet and fully recovers.
G. HERBERT BURNHAM. SYMPATHETIC OPHTHALMIATHE SUCCESSFUL TREATMENT OF A PATIENT WITH AN ACUTE CASE. Arch Ophthalmol. 1930;3(2):200–207. doi:10.1001/archopht.1930.00810040078008