07 July 2025
New research published in JAMA Ophthalmology has outlined an association between cannabis use and an individual’s risk of developing proliferative vitreoretinopathy following retinal detachment surgery.
The research involved comparing two cohorts with 1193 patients who had experienced a retinal detachment in each group. One group included patients who used cannabis and the other group had no reported history of cannabis use.
At six months following retinal repair surgery, patients in the cannabis group were half as likely as those in the control group to have developed proliferative vitreoretinopathy.
The authors noted that the protective association of cannabis use could be due to the population using this drug rather than the effect of the cannabis itself.
“The findings suggest that cannabis use might have a role in reducing PVR development. Intervention trials would be needed to try to control for confounding factors,” they highlighted.
The authors shared that cannabis is the third most commonly consumed psychoactive substance globally, after alcohol and tobacco.
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