Getting raycasting info from mouse event (eg through RaycastHit)

Unity usually feeds some context information for events as required. Collision events get fed the Collision class, network events their respective data structures, etc. Even info not explicitly passed can be accessed from static properties or methods (eg Time class, Camera class). Is there a way to get the raycasting info that originated a mouse event? It feels awkward to need to perform a new raycast to get the collider or the normal, inside an event that was supposedly trigger by what I reckon was an identical raycast.