Choroidal rupture can be secondary to indirect or direct trauma.
Those cases secondary to direct trauma tend to be located more anteriorly at the site of impact and parallel to the ora, whereas those secondary to indirect trauma occur posteriorly. These ruptures have a crescent shape and are concentric to the optic disc. Indirect choroidal ruptures are almost 4 times as common as direct ruptures. Following blunt trauma, the ocular globe undergoes mechanical compression and then sudden hyperextension. Concurrently, the small capillaries in the choriocapillaris are damaged, leading to subretinal or sub-RPE hemorrhage.