if(Input.GetMouseButton(0))
 {
     PointerEventData pointer = new PointerEventData(EventSystem.current);
     pointer.position = Input.mousePosition;

     List<RaycastResult> raycastResults = new List<RaycastResult>();
     EventSystem.current.RaycastAll(pointer, raycastResults);

     if(raycastResults.Count > 0)
     {
         foreach(var go in raycastResults)
         {
             Debug.Log(go.gameObject.name,go.gameObject);
         }
     }
 }