An electronic device (405, 415, 425, 440) comprising: a light source configured to emit a light towards an eye of a user of the electronic device; a lens assembly comprising an adjustable lens having an adjustable focal point; a light sensor configured to detect a reflected light that is reflected from the eye of the user; at least one processor, coupled to the light sensor, configured to detect a plurality of reflection points in a pupil of the eye of the user based on the reflected light, wherein the plurality of reflection points comprises a first reflection point corresponding to light reflected from an outer surface of a cornea of the eye and a second reflection point corresponding to light reflected from an outer surface of a lens of the eye, calculate a distance between the first reflection point and the second reflection point, determine the focal point of the eye based on the distance between the first reflection point and the second reflection point, determine a first distance corresponding to the focal point of the eye of the user, and adjust the focal point of the adjustable lens based on the first distance; and a display screen, coupled to the at least one processor, configured to present an image of an object at a second distance based on the adjusted focal point of the adjustable lens to create a perception for the user that the object is placed at the first distance. a light source configured to emit a light towards an eye of a user of the electronic device; a lens assembly comprising an adjustable lens having an adjustable focal point; a light sensor configured to detect a reflected light that is reflected from the eye of the user; at least one processor, coupled to the light sensor, configured to detect a plurality of reflection points in a pupil of the eye of the user based on the reflected light, wherein the plurality of reflection points comprises a first reflection point corresponding to light reflected from an outer surface of a cornea of the eye and a second reflection point corresponding to light reflected from an outer surface of a lens of the eye, calculate a distance between the first reflection point and the second reflection point, determine the focal point of the eye based on the distance between the first reflection point and the second reflection point, determine a first distance corresponding to the focal point of the eye of the user, and adjust the focal point of the adjustable lens based on the first distance; and detect a plurality of reflection points in a pupil of the eye of the user based on the reflected light, wherein the plurality of reflection points comprises a first reflection point corresponding to light reflected from an outer surface of a cornea of the eye and a second reflection point corresponding to light reflected from an outer surface of a lens of the eye, calculate a distance between the first reflection point and the second reflection point, determine the focal point of the eye based on the distance between the first reflection point and the second reflection point, determine a first distance corresponding to the focal point of the eye of the user, and adjust the focal point of the adjustable lens based on the first distance; and a display screen, coupled to the at least one processor, configured to present an image of an object at a second distance based on the adjusted focal point of the adjustable lens to create a perception for the user that the object is placed at the first distance.