I'm a software manager and used to be a developer. I used to get crushing headaches pretty often when I was working, typically at least once or twice per week.

I'm a software manager and used to be a developer. I used to get crushing headaches pretty often when I was working, typically at least once or twice per week. They would always start around lunchtime with mild eye pain and a dull headache, progressing to migraine-like stabbing pains by 3-4PM. I'd have to take ibuprofen and lay down in a dark room for at least an hour with a washcloth over my face to make them go away. This went on for years. Early last year I got blue-light coating added to my new prescription glasses. This wasn't deliberate; the glasses place had just upgraded their standard lenses with the coating so I figured why not? The headaches went away almost immediately and I maybe got one or two in the entire following YEAR (as opposed to at least 3-4/month before). I still wasn't convinced though so when it came time for new glasses this year I got them without the coating. In the next two weeks I got multiple severe headaches, so I went back and exchanged them for new glasses with the coating. This was in April and I haven't had a single bad headache since. Maybe this is all placebo but since I wasn't particularly expecting them to help much initially I doubt it.