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How long can a human open his eyes without blinking?

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average people blink 14–18 times a minute, people on the computer blink 4 times a minute. People with deficient tears or oil in their eyes blink after every less than 10 seconds. We call them people with dry eye syndrome. read more

According to RecordSetter, Michael Thomas kept his eyes open without blinking for one hour, 5.61 seconds, on March 8 2015. You can watch the final minutes of his attempt at Longest Time To Keep Eyes Open Without Blinking. read more

Some people can make a quarter blink that can refresh the eyes sufficiently. In 35 years of practice, I think I have seen or have noticed a consistent open eye of up to 15 or more minutes especially if the eye is constantly bathed in saline. read more

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