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Nonpenetrating Glaucoma
Surgery (NPGS)
Various innovative surgical
techniques alter the eye's
drainage channels, improving
the flow of fluids with only
minimal penetration into the
eye. These surgical methods
involve superficial
incisions that do not
penetrate the eye as deeply
as, for example, a
trabeculectomy. Proponents
say fewer complications are
likely to result from these
less invasive procedures.
A deep sclerectomy involves
a minimally invasive
incision into the white of
the eye (sclera), a portion
of which is removed to
create a drainage space for
relief of eye pressure.
A new surgical method known
as viscocanalostomy creates
an opening for insertion of
a highly pliable, gel-like
material known as
viscoelastic, which helps
provide enough space for
adequate drainage and eye
pressure relief.
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