Smoking marijuana DOES impair vision by altering key functions like ability to focus and glare sensitivity, study reveals

Approximately 90 percent of cannabis users say the drug does not impair their vision, but a new study found it does the complete opposite.

A team at the University of Granada determined smoking marijuana alters key visual functions that could deem the person visual impaired and a potential threat when driving.

Visual trials conducted with 31 cannabis users showed, following consumption of the drug, visual aspects such as visual acuity, contrast sensitivity, three-dimensional vision (stereopsis), the ability to focus, and glare sensitivity significantly worsened.

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