Your eyes?

Depends on whether or not it's total darkness and whether or not you have a mirror when it's light.

Sunscreen?

-=< >=-

Shadows?

~B~

The conscious mind? Assuming that one is sleeping whilst it's dark...

Eyes.

EDIT: Dang it, beaten by Bfa!

The Sun?

Shadows?

Also, you still use your eyes in darkness, even if it just to see the darkness.

©1984-2009 Toaraga EAM

The Sun?

That is correct. We would've also accepted the light source.

But... you can see the sun, or any other light source. It's the light itself that you can't see...

You see the outer part of the light source (e.g., bulb, not filament) or the sunlight. To actually see the light source, you need a filter or some way to block light. If you try to see either of those, you'll likely get that little shadowy/light spot in your vision.

©1984-2009 Toaraga EAM