Selective
laser trabeculoplasty(SLT) is one of the greatest advances in the
surgical treatment of intraocular pressure
(IOP) in patients with
open-angle glaucoma.
Prior to its introduction, medications and
argon laser trabeculoplasty(ALT) were the ophthalmologist's primary
tools.

HOW IT WORKS.
SLT works by using a specific wavelength to irradiate and target
only the melanin-containing cells in the trabecular meshwork,
without incurring collateral thermal damage to adjacent non-pigmented
trabecular meshwork cells and underlying trabecular beams. When
treated with SLT, a primarily biologic response is induced in
the trabecular meshwork which involves the release of cytokines
that trigger macrophage recruitment and other changes leading
to IOP reduction.
The laser beam bypasses surrounding tissue leaving it undamaged
by light. This is why, unlike ALT,
SLT is repeatable several
times.
While ALT patients can receive two treatments in a lifetime,
SLT patients can receive two treatments a year.
SLT requires a specially designed laser:
A
short pulse to allow for thermal relaxation
Precise wavelength
for optimal melanin absorption
Sufficient
energy to heat melanin to the point that it releases cytokines
Sufficient
spot size to ensure full coverage at the trabecular meshwork
Lumenis has specifically
developed the Selecta˘ç II Glaucoma Laser System to these specifications,
meeting all of the
clinical conditions neccessary to perform successful SLT procedures again
and again. |