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tinted lenses

Interesting article about precision-tinted lenses to reduce hyperactivity in the visual cortex of migraine sufferers:
http://scienceblog.com/45514/precision-tinted-lenses-offer-real-migraine-relief/

And the link to the full scientific article:
http://cep.sagepub.com/content/early/2011/05/20/0333102411409076.full.pdf+html
(free for a limited time)

Certain stripes and zigzag patterns, as reported here, are certainly a trigger for me, so it's nice to see some progress in understanding this.