Random fact of the day

Yesterday an optometrist told me that the brain uses up as much energy processing visual images throughout the day as it takes to keep the heart pumping and our blood flowing. This was in the context of getting me to wear my glasses more, since it requires a lot more energy to make sense out of visual images that are unclear or jumbled than it does sharp ones. Filing this one in the category of “you learn something new every day…”


One thought on “Random fact of the day

  1. Coppermoon says:

    But doesn’t that brain do an awesome job? So, if you don’t wear your glasses, do you lose weight from all the extra effort? (being silly – it’s an interesting fact that I will probably often think about now….)

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