Scientists have discovered that the method our eyes use to process letters on a page is different than previously believed. Instead of assimilating one letter at a time our eyes actually lock on to two different letters simultaneously about half the time. "The team's results demonstrated that both eyes lock on to the same letter 53% of the time; for 39% of the time they see different letters with uncrossed eyes; and for 8% of the time the eyes are crossing to focus on different letters. A follow-up experiment with the eye-tracking equipment showed that we only see one clear image when reading because our brain fuses the different images from our eyes together."
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