Laser Peripheral Iridotomy (LPI)
LPI is used for acute angle-closure glaucoma where the iris in the eye blocks the fluid from draining. This procedure makes an opening in the iris which allows the fluid to drain.
Argon Laser Trabeculoplasty (ALT)
ALT is used primarily for open-angle glaucoma. A laser beam is aimed at the opening of the fluid channel which helps the fluid drain.
Selective Laser Trabeculoplasty (SLT)
SLT is the newest type of laser surgery. The SLT uses a combination of frequencies that allow the laser to work at very low levels that allow the procedure to be safely repeated many times. The SLT treats specific cells and leaves the mesh-like drainage canals surrounding the iris intact. This may be an alternative for those who have been treated unsuccessfully with traditional lasers or with pressure-lowering eye drops.
Click here for more information on the SLT technology.
Laser Cyclophotocoagulation
Laser Cyclophotocoagulation is used for those with very severe glaucoma damage that is not being managed by standard glaucoma surgery. A laser is used to help decrease the amount of fluid made.
Trabeculectomy
Trabeculectomy is a conventional, microsurgery. It is a successful technique used in cases of acute, chronic, congenital and secondary glaucoma. Before surgery begins, a local anesthetic, along with a medication to help you relax, is given to prevent you from felling any discomfort during the procedure. A tiny opening is made in the sclera (the white part of the eye) with a small surgical tool. This new opening allows the intraocular fluid to bypass the clogged drainage canals and flow out of this new, artificial drainage canal. In chronic glaucoma, a small piece of the iris is often removed first to prevent any future problem with acute glaucoma. The tissue over the opening rises to form a little blister called a bleb on the clear conjunctiva. The bleb will be a slightly different color than the white area around it. Doctors look for the bleb to make sure that fluid is draining out of the new opening. Dr. Liang performs this surgery on an outpatient basis and it is performed at an Ambulatory Surgery Center.
Friday, May 09, 2008
