[heroiccocoa]

I'm only seeing this now, sorry. First I'm not a doctor, so I can't give medical advice, certainly not if you believe you are already predisposed to something. I would say that there is no difference between the cheap and expensive devices, as long as they emit the correct wavelengths at the correct intensities. Since that's very low for targeting the eye (you are not trying to treat deeper joints/full body), you won't have to overspend. I think Prof Glen Jeffery mentioned a handheld red light in the 30 euro range for the morning treatment.

You can also look at (670/810 nm LED light strips to hang above your computer monitors and passively absorb some while starting at your monitor all day if you are getting an excess of blue light). I think that is another protocol though, but it might help.

I am sure though that it's more about consistency and treatment time (as in, you can't double the intensity to halve the treatment time). Furthermore, more is not better, it's more like an on/off switch after 2-3 minutes. You can do it every day, just like the solar spectrum is relatively higher in the required part of the spectrum at early morning sunrise every day.

But honestly, listen to Glen Jeffery, perhaps read /r/redlighttherapy