Which of the following symptoms is associated with retinal detachment?

The symptom of "feels like a curtain coming over vision" is characteristic of retinal detachment. This phenomenon occurs when the retina separates from the underlying supportive tissue, leading to a shadow or curtain-like effect in the visual field. Patients often describe this as a sudden onset of peripheral vision loss that can progress centrally, resembling a curtain being drawn across their sight.

The other symptoms mentioned, while they may involve vision changes or other abnormalities, do not specifically align with the hallmark presentation of retinal detachment. Severe headaches can be related to various other conditions but are not a primary symptom of retinal detachment. Sudden loss of hearing is unrelated to retinal issues, and flashing lights typically occur in association with other visual disturbances but are not exclusive to nighttime. Thus, the option that best captures the specific experience associated with retinal detachment is the description of a curtain over the vision.