#DidYouKnow that Eigengrau (which is often known as brain grey) is the colour your eyes see in total darkness. https://t.co/4RNcYMz8bn
— Simon Donne Optician (@SimonDOpticians) June 26, 2018
from Twitter https://twitter.com/SimonDOpticians
Tuesday 26 June 2018
#DidYouKnow that Eigengrau (which is often known as brain grey) is the colour your eyes see in total darkness. https://t.co/4RNcYMz8bn
from Twitter https://twitter.com/SimonDOpticians
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