Effects of Cannabis and Its Components on the Retina: A Systematic Review.

 Publication Cover“Cannabis is the most prevalent drug in the world and its consumption is growing. Cannabinoid receptors are present in the human central nervous system. Recent studies show evidence of the effects of cannabinoids on the retina, and synthesizing the results of these studies may be relevant for ophthalmologists. Thus, this review adopts standardized, systematic review methodology to investigate the effects of exposure to cannabis and components on the retina.

RESULTS:

We retrieved 495 studies, screened 229 studies, assessed 52 studies for eligibility, and included 16 studies for qualitative analysis. The cannabinoids most frequently investigated were delta-9-tetrahydrocannabinol (THC), abnormal cannabidiol, synthetic cannabinoid, and cannabidiol (CDB). The outcomes most studied were neuroretinal dysfunction, followed by vascular effects. The studies also included investigation of neuroprotective and anti-inflammatory effects and teratogenic effects.

CONCLUSIONS:

This review suggests that cannabinoids may have an important role in retinal processing and function.”

https://www.ncbi.nlm.nih.gov/pubmed/31648567

https://www.tandfonline.com/doi/abs/10.1080/15569527.2019.1685534?journalCode=icot20

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