Photodynamic therapy is a two step procedure. This medication accumulates in the abnormal blood vessels under the retina. Subsequently, a very low power, non-thermal laser light is directed at the abnormal blood vessels. The laser light activates the medication which leads to damage and closure of the abnormal blood vessels. The overlying retina is usually not damaged by this unique treatment.
Most patients require multiple treatments to achieve stable results.
The Mayo Clinic Department of Ophthalmology is equipped to offer this treatment option. Mayo Foundation for Medical Education and Research.