A wearable device includes a display, one or more cameras, and at least one processor configured to identify information on a target object and a visual object related to an external object corresponding to the target object in at least one image. The at least one processor is configured to identify whether a first image including the visual object is displayed through the display. The at least one processor is configured to change the first image to emphasize the visual object, based on identifying that the first image including the visual object is displayed through the display. The at least one processor is configured to display an affordance for changing the gaze of the user to display the first image by overlapping the second image, based on identifying that a second image, which is distinct from the first image including the visual object, is displayed through the display.