I didn't really phrase that one the best...
Cro Magnons were genetically the same as anybody else walking around today more or less and their eyes were the same as ours. All but a handful of the animals you ever see today have eyes which are more or less what you're used to.
But Neanderthals and other hominids all had eye sockets much larger than ours:
The theory is that those are basically dark-world eyes, i.e. eyes made for a world which never saw daylight as we know it at all. I mean, some light, not entirely like the inside of a sealed vault or anything like that, but not what we'd call daylight. Dinosaurs all seem to have had those kinds of eyes:
http://news.discovery.com/animals/nocturnal-dinosaurs-night-fossil-110414.html
And a handful of very old kinds of creatures in our present world have those kinds of eyes, tarsiers, lemurs, bush babies etc.
Those kinds of eyes are for the world BEFORE whatever the "Let there be light" thing amount to had occurred.