Optical Society publishes study on the perception of white LED light

[Joshk]

@hank

No surprise to longtime readers here: Flyboy reported a dramatic color shift after a cataract operation. I saw the same thing after I had one.

WOO HOO HOO!!

That thread has this link to show how the lens of the human eye becomes more yellow-orange with age

And there’s much more out there, if you search:
https://www.google.com/search?q=eye+lens+yellow+age&client=firefox-b-1-d&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi28ZmqjeXlAhXMHjQIHcGDDzUQ_AUIEigC&biw=1409&bih=795#imgrc=hFNQOj7qlOl_aM

Interesting. Do you know how much yellowing can occur before the doctors say that person has cataracts?