Migraine light?

Can  the application of appropriate light during a migraine attack reduce its severity?

An article in Nature Neuroscience, published online two weeks ago, presents  "A neural mechanism for exacerbation of headache by light" (so its title). Bright light can worsening headaches. This is known to many of us from "memories of the painful mornings after the night before", so we read in the accompanying  News and Views. That is correct.

The article is about migraine headaches.  It proposes a mechanism how migraine headaches can be modulated by retinal input. If light can worsening a headache, can it also help? Many sufferers escape to a dark room. Is there an alternative? A question I would like to address is, which, if any, spatial or temporal frequencies attenuate a migraine attack? That would allow us to design much simpler medical devices than the migraine zapper is. 

Read on about the migraine zapper [more].