I understand the two points of vision creates depth perception but using energy to focus with two eyes puts strain on my brain. Could we live with just 1 effectively?
In: Biology
Sure. But there’s also a failsafe in having two; an eye injury resulting in blindness is not that uncommon, but much rarer in two eyes at once. So while there’s some advantage in having depth perception, the real advantage is in not being totally blinded and left defenceless if an injury wrecks your eye.
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