Acuity enhancement

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Visual acuity enhancement by StingrayZ - This animation serves as a replication of visual acuity enhancement, which is a common psychedelic effect. It demonstrates the general differences between normal vision and acuity enhancement by shifting between the two states. There is also a subtle amount of visual drifting within this replication.

Acuity enhancement can be described as an enhancement of the clearness of vision. This results in the visual details of the external environment becoming heightened to the point where the edges of objects become perceived as extremely focused, clear and defined. At its highest level, one may experience the perception that they can now comprehend their entire visual field at once, including the peripheral vision. In comparison, when one is sober they are typically only able to perceive in detail the small area of central vision that their eye is currently focused on.[1]

While under the influence of this component, it is very common for people to suddenly notice patterns and details that they may have never previously noticed or appreciated. For example, when looking at sceneries, nature, and everyday textures the complexity and perceived beauty of the visual input often becomes suddenly obvious.

Acuity enhancement is often accompanied by other coinciding effects such as color enhancement and pattern recognition enhancement. It is most commonly induced under the influence of mild dosages of psychedelic compounds, such as LSD, 2C-B, psilocin, and mescaline. However, it can also occur less commonly under the influence of certain stimulants and dissociatives such as MDMA or 3-MeO-PCP.

Image examples

Psychoactive substances

Compounds within our psychoactive substance index which may cause this effect include:

Experience reports

Anecdotal reports which describe this effect within our experience index include:

See also

External links


  1. Sardegna, Jill; Shelly, Susan; Rutzen, Allan Richard; Scott M Steidl (2002). The Encyclopedia of Blindness and Vision Impairment. Infobase Publishing. p. 253. ISBN 978-0-8160-6623-0. Retrieved 30 November 2014.