US Patent 12008977 Personalized display brightness based on pupil size

In some aspects, a device may calibrate a brightness setting of the device for a user based on: displaying, by the device, first calibration content and modifying a luminance of a display while displaying the first calibration screen until a pupil size of the user satisfies a first target pupil size; and displaying, by the device, second calibration content and modifying the luminance of the display while displaying the second calibration screen until the pupil size of the user satisfies a second target pupil size. The device may calculate a metric value based upon pixel values of content to be displayed. The device may display, using a luminance that is adjusted based on the metric and in accordance with the brightness setting, the content. Numerous other aspects are described.