DEVICE AND METHOD FOR PHOTOCOAGULATION OF THE RETINA

摘要

A method for adjusting sub-threshold photocoagulation of a retina includes directing a beam from a radiation source at the retina. The beam has a spatially distributed intensity profile including at least one maxima, which comprises a total of less than 20% of a cross sectional area of the beam at a plane of the retina, and an entire remaining area of the beam has an intensity that is less than 80% of the intensity of the at least one maxima. The remaining area is configured to provide sub-threshold coagulation so that visually detectable coagulation is provided only in areas of the at least one maxima.