> When I use my dominant eye, left, (altho I do everything right-handed
> except shooting a rifle or shotgun) in viewing through the eyepiece
> (EP) of a telescope, there is a tiny circle, very symmetrical, in the
> center of my FOV. The circle has been eliminated as being part of or
> caused by the EP or the scope. That circle is not visible at any
> other time.

It sounds like you've found the halo we've all been talking about. In
my experience a telescope would be the PERFECT place to experience them,
and the fact that you ONLY see them in your telescope suggests that
you're one of the lucky ones.

I think that you're seeing the edge of your implant's corrective area,
which is normally covered by your iris. In low-light situations, your
iris may open wider than the area, and the halos appear.

Try lighting a birthday candle on the other side of a dark room from
you. Do you see a similar circle surrounding the flame? The little
power LEDs on some pieces of AV gear will suffice, too. You will also
likely see them around every light when your eyes are artificially
dilated by the eye doctor.

I would call this a normal side effect. For some people (myself
included) they are a curiosity. They don't bother me. Some members
experience them much more often, in brighter situations, which is much
more of a problem. I've tried to drive home at dusk after an
appointment with the eye doctor, and if their experience was like mine,
I can see why they complain! At least one user had them so bad that he
had his implant removed.

Some of our users use an eyedrop that constricts the pupil. If the halo
is interfering with your astronomy, you might discuss it with your doctor.

Note that the group's website has some sample pictures of halos, and
you'll also be able to search our archives for the names of the drops.
I can't remember them right now... I want to say Alphagan, but I think
that's a brand and not a product.