Groundbreaking Contact Lenses Let Humans See Invisible Infrared Light—Even Through Closed Eyes
Different creatures within the animal kingdom have varying degrees of vision and color perception. Whereas vampire bats are likely colorblind, there are some snakes with infrared senses, mice with sensitivity to UV light, and birds who have tetrachromatic vision (meaning they see the world through four color cones), which differs from humans who have just three color cones and can perceive only a limited range of colors.











































































