Nocturnal geckos have superb vision in dim light - their eyes are 350 times more sensitive to colour at night than a human's (see for yourself with our animal vision interactive). Lacking eyelids, ...

how could it have created the separate parts of the eye -- the lens, the retina, the pupil, and so forth -- since none of these structures by themselves would make vision possible? In other words ...

“Our bodies were not adapted for this.” That said, regular, persistent, or severe eye strain can be a sign of underlying vision problems, Reed says, so it’s worth getting checked out if the ...