YAG Laser Surgery
Due to the use of a YAG (yttrium-aluminum-garnet) laser to do surgery hence the term so. One use for a YAG laser in surgery is to punch a hole in the iris to relieve increased pressure within the eye from acute angle-closure glaucoma. In this type of glaucoma, there is a sudden (acute) increase in pressure in the anterior (front) chamber of the eye due to abrupt blockage of the normal circulation of fluid within the eye.
There are other kinds of YAG laser surgery for the eye (e.g., for cataracts) and other areas of the body including the skin (e.g., to remove birth marks).
Steps Of Yag Laser Surgery
YAG LASER produces a concentrated beam of light that can focus on the iris or any thick membrane behind the intraocular lens.
This laser beam can create a smooth ,fine opening of desired size in these structures without affecting other sensitive parts of the eye…
Applications where YAG LASER is used :
Posterior Capsulotomy : -
Treatment of secondary cataract. This accounts for 95% of the YAG therapy modalities. After cataract surgery with the implantation of a posterior chamber lens (IOL) clouding of the remaining posterior lens capsule can occur in some cases…
Cleaning Of Iol Surfaces : -
Clusters of cells are sometimes deposited on the surface of implanted intraocular lenses, making the lens cloudy or opaque. The YAG laser is used with very low energy to remove these deposits from the surface of the IOL. This would appear to occur primarily with the now increasingly used silicone lenses…
Anterior Capsulotomy : -
This application, is performed in preparation for capsulorhexis (opening of the anterior capsule wall) as part of cataract surgery…
Iridectomy/ Iridotomy : -
Treatment for lowering intraocular pressure when flow of aqueous humour between the lens and the iris is blocked. A hole is created in the iris with the YAG laser. This treatment is performed when there is an obstruction in the flow of aqueous humour between the crystalline lens and the iris (angle-closure glaucoma and chronic glaucoma with a narrow chamber angle)…
Trabeculotomy/Goniotomy : -
Treatment of glaucoma. An opening is created with the YAG laser in the tissues responsible for the the outflow of aqueous humour, in cases of obstruction or blockage. Trabeculotomy is rarely performed with the YAG laser…
Removal Of Synechiae : -
Synechiae is an adhesion of the iris to surrounding tissue. The YAG laser can treat anterior (adhesion around the cornea) and posterior (adhesion to the lens) synechiae…
Severing Vitreous Strands And Membranes : -
Treatment in which vitreous strands and membranes are severed with the help of a YAG laser…
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