The eye monitoring system can be used to detect eye movements, rotations and blinkers from a user. During movements, rotations and flashes, the HMD will take advantage of instantaneous suppression of the user’s visual sensitivity to make adjustments to the operation of the screen. For example, the control circuits may coordinate the operation of the screen with periods of suppressed visual sensitivity associated with the eye movements and flashing to reduce power consumption and / or to make potentially intrusive image changes. By making adjustments during periods of suppressed visual sensitivity, these adjustments can be hidden from the user of the electronic device, according to Apple.
As for Apple Glasses, such a device will arrive next year or 2022, depending on what reputation you believe. It will be a head mounted monitor. Or may have a design like “normal”