Photodynamic Therapy (PDT) is a procedure used to stop the leakage of abnormal retinal tissue in the back of the eye.
The procedure includes the use of a sensitizing dye, which is injected into the arm and absorbed by abnormal structures in the eye. These structures can then be activated by light and selectively treated without damaging the normal tissues.
To preserve or restore vision, this selective treatment can be used alone or in combination with intravitreal injections of special drugs like Avastin, Lucentis, Macugen or steroids.
Conditions amenable to this treatment approach include age related macular degeneration, presumed ocular histoplasmosis syndrome (POHS), and choroidal neo-vascular membranes (CNVM). These are secondary to inflammatory diseases, trauma, juxtafoveal telangiectasis, and central serous retinopathy.