async yellow makes natural whites insanely intense for me
yellow of normal color tinted lenses is very different from irlen yellow which very precisely filters light spectrum and there's like 9 different variations of irlen yellow my specialist had me try that honestly all of them made me feel entirely different from the next lol
also irlen greenish+yellow on mine is not strong yellow it all, it kinda looks like night shift was turned on halfway and then a slight green is added to it perceptually
in the past i had more "standard" color tinted blue light blocking on my prescription glasses that actually looked very perceptually similar, but it didn't have any of the really really noticeable depth processing, movement coordination, and flicker sensitivity reduction benefits of my irlen custom tinted lenses
total difference in how they are made and what they're actually doing with light vs. just regular color tints that probably distort light spectrum in a much less consistent way
with standard blue blocking lenses i never felt much of a difference from regular vision other than "some colors look more vivid" and "things are a bit more relaxing"
with very perceptually similar irlen lenses — even coming from the standpoint of honestly not really believing the hype at first — the moment i went outside with my specialist halfway through the selection process it was an absolute "oh my god i have not seen the world look quite this way in 15 years i didn't know things are supposed to look this 3D and this large all in my field of vision at once" moment
i really didn't believe at first that this would even be possible through purely a "really well calibrated color filter", but somehow it is and i was seeing the proof firsthand right in front of me
finally, only irlen custom tinted lenses have actually significantly affected the feel and improved the comfort of OLED iPhones for me, no other glasses or color filters have ever done that for me
by the way, irlen custom tinted lenses >>>>>>>>> neurolens. irlen is so much better, source: tried both
don't expect screen improvements with them though aside from OLED phones (because they really help with PWM sensitivity, they actually make my iPhone 14 Pro usable) and really surprisingly the M1 MacBook Air that actually does improve while wearing irlen lenses
a lot of the benefits are more for rooms with flickering lightbulbs, HUGE improvement in depth perception in the real world, staying coordinated in large crowds, outdoors looks and feels awesome, bright sunlight isn't tiring anymore even though sunlight still appears "perceptually" just as bright with them on —
not so much laptop screens and monitors though. if a screen dithers it will still suck with irlen lenses. if a screen PWMs it can be improved, but might have significantly more glare which can sometimes end up being worse than whatever it improves
but, i still have no idea why, the one screen it DOES improve is the M1 MacBook Air, i don't feel ANY additional glare and it's more comfortable with my lenses on (on the other hand, no other Mac or Windows laptop i own is improved with irlen lenses for me, even others with succesfuly disabled dithering)