The initial experience for many
people is of a form of 'insect vision', with
distinct but multiple images overlapping in
rather a confusing way. Every movement gives rise
to a pronounced flicker which many people find
quite disturbing at first. Some complain of
increased strain and headaches at first use. This
indicates that some manufacturers' claims that
the eyes 'automatically' relax when using these
things are a touch over-enthusiastic. Rather, as
with so many other beneficial things, you have to
find out how to relax in order to be able to use
them, which some find easier than others. The
flicker of movement must be just accepted
&mdash the Bates Method has a lot to say
about the experience of visual movement
&mdash and after a while it becomes possible
to find a way of centralising a particular object
so as to eliminate the multiple images, at least
from the central area. When this can be done the
central object becomes noticeably clearer than
its surroundings which is a useful demonstration
of Dr Bates' principle of central fixation.
Multiple Pinhole Glasses page 3
