oscillating light waves can pass through it. If light hits a reflective surface, e.g. a wet road, it is also polarised - this time oscillating horizontally - and cannot pass through the polarisation filter [...] only filter out a specific area of the spectrum, whilst the remaining components of light are able to pass through the cut-off filters virtually unhindered. The areas between transmitted light (transmission)

working in front of a screen, dry heat or cold draughts put a severe strain on them. Age, too, does not pass by without leaving its mark. To maintain eyesight long term, the eyes require special care – vitamins

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