Pop taught me today that
every lens can be deciphered
from its clock.
Sphere; the same in all directions
Cylinder; curvature yields power --
A prism deviates yield.
Convex; concave -- in dialectic.
Neither can comprise the whole optical center.
Neutralize a lens of unknown power --
the crossed meiers come
into focus at a point --
manipulation of light
and miraculous
by the senses;
Corpuscles, magnetic waves.
Neither can comprise the whole.
The reticle series
of concentric images a
powerdrum.
A prism deviates
light toward the base
instinct;
of the stem.
One diopter power necessary
to bridge the chasm.
Direction of displacement is
equal to base orientation
of (a prism).
Axis along flatside
to contain the virtues
where cylinder has no powers.
One power necessary to bring parallel
light rays to a focal point
at a distance of one meter.
Using the lensometer alone how many
different powers can be found in a vision?
James A. Gardner
©1996, 2000, by Pen & Sword Hypersite