Lens tinting for headache -CEW

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====== Lens tinting for headache ======
FIXME
====FL-41====
  * reduction of photophobia and headache in people with migraine headaches
  * fMRI studies show decreased light-evoked activation in areas associated with pain processing (somatosensory cortex, insula and anterior cingulate cortex) 

====Blue light blocking lenses (480nm)====
  * Benefit seen in a randomized controlled trial- reduction in headache pain 

====Colors and effect on headache====
  * Green light is most tolerable 
  * 620 nm filters help in some (orange-red) 
  * Blue, amber, red and white light are more likely to exacerbate headaches 


====References====
  - [[https://pubmed.ncbi.nlm.nih.gov/38101593| FL-41 Tint Reduces Activation of Neural Pathways of Photophobia in Patients With Chronic Ocular Pain. American Journal of Ophthalmology. 2024. Reyes N, Huang JJ, Choudhury A, et al.]]
  - [[https://pubmed.ncbi.nlm.nih.gov/12421156|Tinted Spectacles and Visually Sensitive Migraine. Cephalalgia : An International Journal of Headache. 2002. Wilkins AJ, Patel R, Adjamian P, Evans BJ.]]