A controlling apparatus comprises a tomographic image capturing unit configured to capture a tomographic image of an eye to be examined, in response to a command for capturing the tomographic image and based on multiplexed light formed by multiplexing return light from the eye irradiated with measurement light and reference light corresponding to the measurement light and a display control unit configured to cause a display unit to display the tomographic image obtained in response to the command, a display form indicating information concerning the quality of the tomographic image, and a display form for enabling selection of a recapturing request for recapturing the tomographic image of the eye to be examined.
