tobacco dust eye Schaffer's sign alludes to the clinical finding of pigment cells in the anterior vitreous, that is described as “tobacco dust,” and is pathognomonic for a retinal tear, #ophthalmology #ophthalmologist Vitreous - The Massachusetts Eye
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And its not so much that losers toke weed

Preventing relapse following smoking cessation

They do not regulate their time of sowing either by the moon, month, the season, but by the holy week of the passing year

Equally important, the proposed reference levels encourage the adoption and enforcement of comprehensive indoor smokefree and vapefree policies to ensure indoor environments remain free of tobacco product pollutants

Use your own cigarette tubes, cigarillos and more
10.1038/mi.2017.61 Mucosal Immunol