cigarette in the eye Can smoking harm your eyesight and vision?- Smoker's Eyes Smoking can lead to severe
Description
Regularly changing filters (every 1-3 months in summer) is one of the simplest and most effective prevention steps

As smoking habits changed and pocket sized packs became popular, 1lb tins were gradually replaced by smaller tin sizes which in the main did not require ventilation holes, although there were exceptions to this such as Digger Flake and Erinmore Mixture which were available in 2oz ventilated tins in the 1950s Unfortunately, the presence or absence of air holes does not give much if an indication as to the age of a tin as the ventilated tins were phased out very gradually over a long period of time
Hc-sc.gc.ca

The compact dimensions and filter system support consistent draw resistance and controlled particulate flow , while the pocket packaging emphasizes portability and storage efficiency
