3 ms·
Only for a few weeks. No obvious effects yet. They are 670nm which is close to this study (650nm?)
by pnw 3y ago
Only for a few weeks. No obvious effects yet.
They are 670nm which is close to this study (650nm?)
- moffkalast 3y agoYeah I also bought a "photo red" 665nm 1W diode after that last thread, stared at it occasionally at low power and never noticed any difference. I guess it's one of those things you gotta do for several decades and unless you leave one eye as a control there's nothing to compare to anyway.