alien eyes

yeah your right

It sure does, but they don't, do they?

I don't know.

They don't have eyes... That's just how they look.

in alien the alien drone's head was slightly transperant and you could sort of see two eyes

The head of a xenomorph is one of elongated design, extending well beyond the neck and looming over its back. While the exact purposes of this design remain unknown, it is highly speculated that it is to better emit and recieve a variety of mediums, including sound and differing arrays within the electromagnetic spectrum.

Basicly it sees like Daredevil, in a way.