Method and apparatus for acquiring information by capturing eye

A wearable electronic device comprising:

• at least one lens;
• an optical surface positioned on a first side of the at least one lens;
• a display positioned on the optical surface;
• a light source configured to output light toward a subject located at a second side of the at least one lens, wherein the subject includes eyes and a surrounding area of the eyes of a user wearing the wearable electronic device;
• a camera configured to receive the light, which is output from the light source and scattered by the subject located on the second side of the at least one lens, through the at least one lens and the optical surface;
• at least one sensor configured to detect a distance between the subject and the wearable electronic device from a fixed inside portion of the wearable electronic device;
• a memory to store data related to at least one of a facial expression or an emotion;
• and
• at least one processor configured to:
• obtain, based on, at least in part, the light received by the camera, first information about the subject including a first distance from the fixed inside portion to the subject detected by the at least one sensor,
• identify a change in the first distance based on a second distance previously detected by the at least one sensor,
• obtain a first data related to at least one of a facial expression or an emotion stored in the memory,
• obtain second information including a second data related to at least one of a facial expression or an emotion corresponding to the change in the first distance, wherein the second data identified based on the first data, and
• control the display to display a virtual image obtained based on the second information.