It due to lights that reflects off of the retinas in our eyes.In many animals,including dogs,cats and deer,the retina has a special reflective layer called the tapetum lucidum that acts almost like a mirror at the backs of their eyes.If you shine a flashlight into their eyes at night, their eye shine back with bright,white light.Which is due to tapetum lucidum,among many nocturnal vertebrates the white compound guanine is found in the retina of the eye.Provide a mirrorlike surface, the tapetum lucidum,which reflects light outward and allows a second chance for its absorption by visual pigments at very low intensities.But human,don't have tapetum lucidum layer in their retinas.But cause by a reflection off of the retina which you see is the red colour from the blood vessels nourishing the eye.
Lim Qin Ping(2e3)
Lim Qin Ping(2e3)
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