Scenery slicing is the experience of a person's visual field appearing to split into separate, cleanly cut sections. These individual slices then proceed to drift slowly away from their original position before disappearing and resetting to normal. This effect typically occurs spontaneously and rarely sustains itself for more than several seconds.
The organisation of these slices can be quite varied; they can be as simple as three separate sections or extremely complex, with formations such as multiple intricate slices of moving interlocking spirals, or an infinite variety of other potential geometric designs.
Scenery slicing is often accompanied by other coinciding effects, such as environmental cubism and visual disconnection. It is most commonly induced under the influence of moderate dosages of dissociative compounds, such as ketamine, PCP, and DXM. However, it can also occur to a lesser extent under the influence of psychedelics,  such as LSD, psilocybin, and mescaline.
- Papoutsis, I., Nikolaou, P., Stefanidou, M., Spiliopoulou, C., & Athanaselis, S. (2015). 25B-NBOMe and its precursor 2C-B: modern trends and hidden dangers. Forensic Toxicology, 33(1), 4. | https://doi.org/10.1007/s11419-014-0242-9