Subthreshold Laser Treatment for Reticular Pseudodrusen and Geographic Atrophy Secondary to AMD

"Subthreshold photocoagulation is a method in which the burn spots (treated areas) cannot be seen with biomicroscopy, on color fundus photograph, on Optical Coherence Tomography or Fluorescein Angiography when the subthreshold level is adequately set. Subthreshold photocoagulation can be considered to be truly minimally invasive or non-damaging photocoagulation. A term sometimes used is photo-thermal stimulation since the Retinal Pigment Epithelium (RPE) layer is heated and stimulated, but not destroyed.~The threshold level output power is set to obtain barely visible burn at approximately 200 mW to 250 mW using the titration mode, and irradiation is conducted after switching over to Endpoint Management."