How is Visudyne therapy different or better than the existing thermal laser therapy?
Visudyne therapy appears to stop the leakage of abnormal blood vessels associated with wet AMD without damaging the overlaying retina, thereby preserving vision. This means that Visudyne therapy may have benefits for patients whose most central vision, the vision needed for reading, driving and other functional activities, is affected and for whom the current thermal laser therapy is inappropriate. Early studies shwoed that Visudyne therapy may be able to selectively close the abnormal blood vessels without damaging normal vessels, even after multiple treatments.
