Visual stretching from Dextromethorphan

Visual stretching is a spatial distortion in which the observer's visual field appears to be pulled or elongated along a horizontal or vertical axis, as though the image of reality is being physically stretched like taffy. The environment may seem to lengthen in one direction while narrowing in the perpendicular axis, producing an increasingly compressed, ribbon-like view of the world. At its extremes, the stretching can reach seeminglyinfinite proportions, with the visual field drawn out to an impossibly thin strip of coherent imagery surrounded by darkness, static, or subtle geometric patterns.

At lower intensities, visual stretching produces a subtle sense that proportions are slightly "off" — rooms may seem taller or wider than they actually are, faces may appear elongated, and spatial relationships feel gently warped. The distortion may be barely noticeable and easily dismissed as a mild oddity. At moderate levels, the stretching becomes unmistakable: the visual field visibly elongates, objects deform along the axis of stretch, and the overall experience takes on a distinctly surreal, fun-house mirror quality.

At high intensities, the effect becomes overwhelming. The visual field may stretch to the point where only a razor-thin band of comprehensible imagery remains, with the rest of the visual space filled with empty darkness or flowing geometric forms. This extreme stretching can be experienced as the visual counterpart of ego dissolution — the spatial framework of normal perception literally pulling itself apart. Many users describe the sensation as their vision "zooming out to infinity" or "being pulled through a tunnel that goes on forever."

Visual stretching is most prominently associated with high doses of rapid-onset hallucinogens, particularlynitrous oxide,DMT, andsalvia divinorum, where it tends to occur during the most intense moments of the experience and frequently precedes or accompanies ego death. It can also occur with high-dose psychedelics and dissociatives. The effect's association with sudden-onset substances suggests it may be related to the rate of change in neural activity rather than just the absolute level of disruption — the brain's spatial processing systems may produce stretching artifacts when overwhelmed by a rapid transition.