Auxiliary "task-distance" eyeglasses for use with conventional corrective
eyeglasses to eliminate the constant head tilting otherwise necessary to
maintain focus when using only the conventional lenses. The auxiliary
glasses have upper partial lenses that correct mid-range vision, the focal
length required for viewing a computer screen, reading piano music,
viewing an instrument panel, or any other arms' length task. The zone of
mid-range correction extends across the full width of the lenses. The
lenses of the auxiliary glasses are connected by a bridge and supported on
the primary glasses by two short tabs that extend sidewardly so as to rest
on the temple members of the primary glasses. No clips or clamps are
involved, so the auxiliary glasses simply "drop in" behind the regular
glasses, avoiding damage to either the primary or the auxiliary lenses.
This configuration makes the auxiliary glasses less obtrusive than
conventional clip-on lenses. Moreover, the auxiliary glasses can be formed
inexpensively in one piece of molded plastic, and can be sold without a
prescription.