Ian Johnston, Science Correspondent, Friday 9 December
Research could ‘highlight the neurotoxic effects of cannabis use on the central nervous system as a result of how it affects retinal processing’
Marijuana may have neurotoxic effects, researchers have found. Regularly smoking cannabis may damage users’ eyesight by triggering an abnormality in the retina, a new study has found.
Researchers in France tested 28 cannabis smokers and 24 people who did not use the drug to see how well their retinal cells responded to electrical signals.
A small but significant delay was found in the time taken for the signals to be processed by the retina of the marijuana users by comparison with the control group.