VKH involves the choroid and retina, while sympathetic spares the choriocapillaris. One mneumonic is: “Sympathetic Spares”
This point is occasionally tested, however, the difference may be false. Eyes with sympathetic ophthalmia tend to be enucleated earlier and may not have had time to involve all levels of the choroid.
Inflammation does not mean infection, even when an infection causes inflammation. Infection is caused by a bacterium, virus or fungus, while inflammation is the body’s response to it.
