This article is a work in progress; It is currently not approved as canon.
Circumventing conventional display technologies, retinal imaging systems or RIS use a combination of high speed eye-tracking and high resolution laser systems to paint an image directly onto the user's retina. Simple, with small energy requirements and with no moving parts, the RIS is quite rugged and comes in the form of finger-sized brackets over the cheekbones as part of a headset. Commonly included is a wide-frequency camera system upon each which can display light in phases and frequencies the user normally cannot see (even replacing glasses). The main purpose of these cameras however is to compare eye-tracking information to what they see in order to determine what a user is looking at for augmented-reality purposes.
Images displayed can include a HUD, augmented reality (depicting objects which are not there) or virtual reality (the depiction of a complete environment).
The Retinal Imaging System is commonly used in conjunction with other technologies.
It entered the market in YE38 and retails for 500KS.