The DMT laser experiment: does a laser reveal the “code of reality”?

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Few DMT claims have spread as fast as this one. Videos and posts describe a laser shone at a wall during a DMT experience and a viewer who sees, in the light, rows of characters or symbols said to be the “code” of reality. Supporters treat it as a repeatable experiment. This article looks at where the idea came from, what would be needed to test it, and what is already known about laser light, the visual brain and expectation. It does not explain how to try it.

What is the DMT laser experiment?

As described in a 2026 DoubleBlind feature, the claim is that during a DMT experience, a laser pattern shone on a wall reveals a field of characters that some viewers describe as coherent and stable in space. Some participants describe other things instead: a cityscape, a biological world, an “interdimensional space”. Some interpret the pattern as the code of reality or as a hologram disrupted by the laser (Busby, 2026). These are reports and interpretations, not findings. Evidence: unresolved.

The same feature credits Danny Goler, who describes himself as a researcher and filmmaker, with popularising the method; he told the magazine the idea came to him in August 2020, and a documentary and a widely viewed trailer followed. The journalist who wrote the piece reported seeing only the laser reflection, which he described as wobbling, while two acquaintances reported code-like visions (Busby, 2026). This is journalism about how the claim spread; the visions themselves are reports.

Has the DMT laser experiment been tested?

Not in any published study we could find. On 20 October 2026, the most relevant results of a Europe PMC search combining DMT, laser and visual or hallucinatory effects contained no study of the claim, and the journalism we read treats it as unproven. A fair test would need, at minimum: a control condition with no drug or a placebo, viewers who do not know what they are supposed to see, a way to record what each person reports independently, and a check of whether different people report the same specific symbols at the same place on the wall. None of that has been done.

Videos and testimonials cannot separate what is in the light from what the viewer brings to it. Evidence: unresolved.

Researchers quoted by DoubleBlind made the same point. David Luke of the University of Exeter said the evidence is confounded by priming, because people were told publicly what to expect; Zeus Tipado, a neuroscientist, called it an optical illusion helped by suggestion; and Andres Gómez Emilsson of the Qualia Research Institute attributed the pattern to laser speckle that the visual system compresses (Busby, 2026). These are expert opinions reported in journalism, not study results.

What is laser speckle, and why does it matter?

Laser speckle is ordinary optics. When coherent light, such as a laser’s, is scattered back from a rough surface, it forms “a random interference pattern at the detector”. Waves travel slightly different path lengths and reach the observer at random relative phases, producing bright and dark spots, and movement causes the pattern to fluctuate (Heeman et al., 2019). Doctors use exactly this effect to image blood flow in tissue. Evidence: established.

Two consequences matter here. First, a laser spot on a painted wall is never a smooth blob: it is a grainy, high-contrast texture of tiny points, even for a sober viewer. Second, the pattern forms at whatever detects the light, and when a person looks at the wall, that detector is their own eye, so small movements of the eye or head make the grain shimmer and shift. A finely detailed, ever-changing, high-contrast texture is just the kind of input a brain may organise into shapes. The physics is established; using it to explain the reports is a plausible reading, not a tested account of what laser viewers see. Evidence: preliminary.

Does the visual brain make its own patterns?

Yes, and in predictable shapes. The researcher Heinrich Klüver grouped geometric hallucinations into four “form constants”: gratings, lattices, honeycombs and chequer-boards; cobwebs; tunnels and funnels; and spirals. A 2001 mathematical model showed that if the primary visual cortex (V1) becomes unstable, the cortex’s own pattern of connections would produce those geometries (Bressloff et al., 2001). It is a model, not a DMT experiment, and it covers simple geometry, not symbols or scenes. Evidence: preliminary.

DMT reports are full of such patterns. In 3,778 coded Reddit reports, fractals, geometric shapes or patterns appeared in 32.6%, and open-eye visuals in 13.2%, including room and wall distortion (4.6%) and pixelation (1.0%). Writing, symbols, scripture or hieroglyphs were described in 1.9%, and digital or alien visuals in 0.8% (Lawrence et al., 2022). In other words, people saw symbol-like imagery on DMT without any laser, though only in a small minority of reports. In a lab EEG study, the emergence of slower brain rhythms correlated with the peak of the experience, particularly its eyes-closed visual component (Timmermann et al., 2019). Evidence: preliminary; self-selected reports and a small study.

How much does expectation change what people see?

A lot, especially when the signal is noisy, and the laser claim is a near-perfect case: a noisy visual texture, a strong prior expectation and a vivid altered state. Several lines of research are relevant:

• Expectations shift detection. In a preregistered study, people who expected more voices in noise were more willing to report detecting voices, and the effect was strongest when the sound was unreliable (Szymanek et al., 2024). That was a hearing task, not a drug study.
• Imagination can cross a “reality threshold”. A 2023 study found that imagined and perceived signals mix, and that people judge something real when the mixed signal is strong enough; when imagined signals are strong, they can become “subjectively indistinguishable from reality” (Dijkstra and Fleming, 2023). That used simple gratings with sober participants.
• Expectation changes DMT intensity. Identical doses were rated less intense when given open-label, step by step, than when given blind (Erne et al., 2026).
• Culture shapes visions. Ethnographic work at an ayahuasca centre argues that social context shapes the content of visions, not only how they are interpreted (Dupuis, 2022).

Put together: a person who has watched videos of “code” and then looks at a shimmering speckle pattern in a state known for geometric imagery has every ingredient for seeing code, whether or not anything is encoded in the light. That does not prove the reports are mistaken. It shows why only a blinded, controlled test could tell. Evidence: unresolved.

Can lasers damage your eyes?

Yes. A 2017 review found 48 publications describing 111 patients with documented acute and permanent eye damage from laser pointers, ranging from focal photoreceptor defects to macular holes and retinal bleeding with loss of vision. At first examination, visual acuity was worse than 20/40 in 55% of affected eyes. The authors say injuries are often caused by untested or wrongly classified devices sold online, and that treatment options are limited (Birtel et al., 2017). Evidence: established.

What we still don’t know

• Whether people who do not know about the claim report code when viewing a laser on DMT; no blinded test exists (unresolved).
• Whether independent viewers ever report the same specific symbols at the same place; this has never been checked (unresolved).
• Whether the form-constant model explains DMT geometry; it has not been tested with DMT (preliminary, as a hypothesis).
• How speckle, eye movement and an altered visual cortex interact; no study has combined them (unresolved).

The fair summary: the DMT laser experiment is a striking story, but not yet an experiment. Speckle physics, the visual brain’s habit of making patterns, and expectation can each produce some of what people describe, and nobody has run the blinded test that could tell these apart from hidden code. For more, read what is DMT, our guide to the waiting room, the dome and the chrysanthemum, and what researchers have recorded about entities.

Shroomverse sells mushroom products. This article is general information about the “DMT laser experiment” claim and the science of vision and laser light. It is not medical, legal or purchasing advice, and it does not recommend any product.