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Many people who go to see a 3D movie get a headache about 20 minutes into the movie. And even if you don’t get a headache, you may notice that your eyes don’t feel right. It could be anything from excessive tearing to an achiness that makes you take off the glasses and rub your [...]
Point and counterpoint – Is Aspartame making people blind?
by Marshall Brain | October 11, 2010
Glenn Beck has recently announced that he is having unspecified vision problems. And Glenn Beck is known to be a consumer of Diet Coke. Therefore, there has been a rush to blame Aspartame for his vision problems, as seen in this article: Warning to Glenn Beck: Don’t Drink Diet Coke The article certainly sounds convincing: [...]
Hooray! It’s August 18, which means that I can finally write about a study that was embargoed until today! It’s a sad study, I should warn you, out of Switzerland’s Kantonsspital St. Gallen (I love how the Swiss make everything a single word and hyphenate nothing) and published in the British Journal of Ophthalmology.
You Asked: How does night vision work? — Joe, Bellville, Texas Marshall Brain Answers: Night vision is something built into the eyes of many species. In humans, night vision is provided by rod cells, as described here: Rod cells detect light in black and white, and (once they get used to darkness) can be extremely [...]
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