Have not read the underlying study but given that it is a generic nutrition and vision study, this seems like a clear case of p-hacking. At best it could be a "

Have not read the underlying study but given that it is a generic nutrition and vision study, this seems like a clear case of p-hacking. At best it could be a "here is something that might merit future research". They find that one of the nutrient factors studied is positively correlated with improved vision at p=0.01. https://xkcd.com/882/ https://xkcd.com/882/