shafer's sign tobacco dust eye is the presence of pigment cells in the vitreous of the eye, and it's a sign of a retinal break or detachment. It's also known as “tobacco dust” Schaffer's Sign vs Vitreous Hameorrhage:

Moreover, following electronic cigarette exposure, arsenic, chromium, copper, iron, manganese, nickel, lead, selenium, strontium, and zinc were found to accumulate across different regions of the brain, with the greatest accumulation observed in the anterior frontal cortex and striatum (134)

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She went to see an ear, nose and throat specialist who diagnosed the tumor and said it had to come out immediately or it would kill her by suffocation

Proactive Maintenance for Extended Powermatic 2 Lifespan Cleaning Routine Clean after every session, or weekly if used less often