A method performed by a vision control system for supporting in low light conditions in surroundings of a moving vehicle, object detection by at least a first on-board rearward- and/or sideward-facing image capturing device. The vision control system captures a surrounding located rearward and/or sideward of the moving vehicle with support from the at least first image capturing device. The vision control system further determines light conditions in the surrounding. Moreover, the vision control system provides with support from at least a first light source, when the light conditions fulfill insufficient light criteria, a light output illuminating a ground region of the surrounding to facilitate object detection by the at least first image capturing device. The disclosure also relates to a vision control system, a vehicle comprising such a vision control system, and a respective corresponding computer readable storage medium.