I'm glad you posted this article. I love greens, and in my 50s I can feel my vision going down the drain, so to speak.
So, uptick in the consumption of greens!
I joined that 50s club recently and have noticed some degradation in my eyesight the last few months, so like I mentioned earlier, if this is what it takes to help offset the hours of wear and tear caused by staring at screens etc. , it's a relatively easy way to keep the old eyes working well.