I have experienced synthetic optics via technology. Synthetic optics is using directed energy (RF Energy / Microwaves) and somehow creating synthetic optical signals in the brain. My top theory how this is done is RF Energy to the Visual Cortex. These synthetic signals act to create visuals. I'm not sure how comprehensive this can be done but I have had a few types of optical tech experiences such as: Synthetic Optic Visual Overlays of Eyesight(which could perhaps be used to create Visual User Interfaces), Black Shadows of Various Types (Used for Psy Ops), A Darkening of my Visuals, and more...
These technologies can be used to induce a technological LSD state as well as convincing illusions. This technology has many applications whether it is for warfare or recreation. I suspect in the modern day it is almost exclusively used for electronic psychological warfare...
The Electronic Control Grid
The Invisible War: 21st Century Targeting
Modern Day MKULTRA Cover Stories
Mapping All Static Knowledge in Existence via Electronic Telepathy - Mapping Electromagnetics