This is a nice case for choroid effusion resultant from penetrating ocular trauma.

• choroidal detachment is a detachment of the choroid from the underlying sclera due to the accumulation of fluid in the suprachoroidal space
• choroidal effusions appear on CT as hypodense linear fluid collections elevating a thick hyperdense choroid; on MRI, they usually will exhibit low T1 and high T2 signal