Researchers are exploring the possible effects of marijuana on vision. The researchers found abnormal changes in the eyes’ retina associated with regular use of cannabis. The researchers aimed to explore the effects of marijuana use on the function of retinal ganglion cells (RGCs). Marijuana is known to act on the central neurotransmission, so studying the RGCs in individuals who regularly use cannabis is of high interest.
Of the 52 participants of the study, 28 were regular cannabis users and the remaining were controls. Based on the results of pattern electroretinography, the researchers found a significant increase of the N95 implicit time in cannabis users. The amplitude and the implicit time of the N95 wave are two parameters used to assess the RGC function.
“Independent of debates about its legalization, it is necessary to gain more knowledge about the different effects of cannabis so that the public can be informed. Future studies may shed light on the potential consequences of these retinal dysfunctions for visual cortical processing and whether these dysfunctions are permanent or disappear after cannabis withdrawal,” the authors concluded.