Acuity enhancement is a heightening of the clearness and clarity of vision. This results in the visual details of the external environment becoming sharpened to the point where the edges of objects become perceived as extremely focused,
clear, and defined. The experience of acuity enhancement can be likened to bringing a camera or projector lens that was slightly blurry into focus. At its highest level, a
person may experience the ability to observe and comprehend their entire visual field simultaneously, including their peripheral vision. This is in contrast to the
default sober state where a
person is only able to perceive the
small area of central vision in detail.
While under the influence of this effect, it is
common for
people to suddenly notice patterns and details in the environment they may have never previously noticed or appreciated. For example, the complexity and perceived
beauty of the visual input often become apparent when looking at sceneries, nature, and everyday textures.
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, psilocybin, and mescaline. However, it can also occur to a lesser extent under the influence of certain stimulants and dissociatives such as MDMA or 3-MeO-PCP.
