When complaints are leveled at most reenactors it's not as much
how we dress as how we treat our faces. Facial hair is suppose
to be good enough to make a reenactor look like a citizen of the
old west. If you wear a hat or period looking bonnet (etc.) to
cover your 21st century coiffure we can forgive the hair. Women
who part their hair down the center (men part on the side) and
keep it tight, make a complete picture of 19th century style.
However, no matter how perfect your clothing, hair, head
covering, or look, wearing large modern frames destroys that
impression completely. Historically most people didn't wear
eyeglasses or spectacles. They were a sign of old age and
weakness. Most people lived with their impaired vision unless
they could afford spectacles. Then they usually bought a ready
made pair from an eye glass salesman. In many cases people never
knew they were not seeing clearly. When looking for period specs
here's a simple guide: Oval lenses generally start just before
1800 and go into the 1920'