There are many real life environments where you might see stroboscopic
effects without there being a flashing lamp. The optical 'opposite'
like when you've seen wheels seem to move backwards is if your line of
sight can be mechanically inturrupted somehow, or even systematiclly
vibrated or jarred. Coming up on a truck, for example, if your view of
the front wheel is influenced by the lug nuts on an aft wheel, can
offer that impression.

A badly out of balance wheel on your car, moving your head at the
right frequency, can do the same thing.

There are probably other circumstances as well, but I can't at the
moment think of one where steady state viewing of a rotating wheel or
the like without something like a pseudo shutter influencing your
vision would cause it.

So no, your vision is not defective. Or more correctly, it may be
defective, but not because of what you've noted in your post!