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Georgia Institute of Technology
Scientists reveal the real reason you have eyelashes
Scientists reveal the real reason you have eyelashes

The mysterious function of eyelashes has been revealed at last -- thanks to science. After measuring the dimensions of nearly two dozen mammal eyes, performing a series of wind tunnel experiments and engaging in some complex fluid dynamic modeling, researchers determined that most mammal eyelashes are one-third the length of their eyes -- just the right length to minimize the flow of air over the eyeball. This reduction of airflow is important because less moving air across the eye keeps evaporation at bay and stops irritating dust from getting deposited on the eye surface, the scientists report in a study published Tuesday in the Journal of the Royal Society...