A
lens without power. Planos are for
patients that do not need corrective power
but desire the comfort and safety of high quality
polarized lenses. See
more
A
multifocal lens designed for the correction
of presbyopia. The D-28, also known as a flat top, is a lined bifocal
in which the reading addition or segment of the
lens is used for near vision correction,
while the remainder of the lens (carrier)
is usually used for distance correction. See
more
No
line multi-focals. Progressive lenses contain
no transition line and no image jump. Instead,
there is a gradual change of power along
a "channel" from distance to near,
with the intermediate portion in between. See more
