Reindeers Eyes

Reindeers Eyes


A study by researchers from University College London in 2011 revealed that reindeer can see light with wavelengths as short as 320 nm (i.e. in the ultraviolet range).


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A study by researchers from University College London in 2011 revealed that reindeer can see light with wavelengths as short as 320 nm (i.e. in the ultraviolet range), considerably below the human threshold of 400 nm.

It is thought that this ability helps them to survive in the Arctic, because many objects that blend into the landscape in light visible to humans, such as urine and fur, produce sharp contrasts in ultraviolet.

The tapetum lucidum of Arctic reindeer eyes changes in colour from gold in summer to blue in winter to improve their vision during times of continuous darkness, and perhaps enable them to better spot predators.


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