June 25, 2014

“Mommy, why do I have sparkles in my eyes?”
“What? Did you get glitter in your eye?”
“No, when I rub them… I have sparkles…”
“Oh! Phew. When you press on your eyes, you see colors & lights because you’re squishing the blood vessels.”

And I wasn’t sure about that… so I looked it up, and…
***WRONG ANSWER, MOMMY!***

http://en.wikipedia.org/wikiPhosphene
*The pressure from rubbing your eyes mechanically stimulates the retina, causing pressure phosphenes.*

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