Electronic device for displaying content and method of operation thereof

Disclosed is an electronic device including a camera module, a display that displays AR content or VR content, at least one processor operatively connected to the camera module and the display, and a memory operatively connected to the at least one processor and storing the AR content or VR content. The memory may store one or more instructions that, when executed, cause the at least one processor to obtain eye tracking data by using the camera module, to determine an eye fatigue level based on the eye tracking data, and to select one mode between a first mode for changing a setting of the display and a second mode for changing both the setting of the display and an output setting of the AR content or VR content, depending on the eye fatigue level. In addition, other various embodiments identified through the specification are also possible.