A number of monitor manufacturers (ViewSonic, for example) have recently added a 'blue light filter' to the list of features for their latest models. Designed to minimise eye fatigue when monitors are viewed for long periods, this feature is most probably a response to media reports claiming that extended exposure to high levels of blue light is linked to irreversible eye damage.

5mm blue LEDs with a clear encapsulation. Image: Wikipedia

A web search on 'blue light + LED eye damage' delivers many hits on articles repeating claims that looking at mobile phone and computer displays can cause eye damage. These all seem to be rel ...

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