system 10 is utilized to treat rpe capullochoris and choroids of the eye the pulsed output 16 is directed to a target site of the eye and a temperature rise at the target site is non additive from pulse to pulse the target site 40 is an area of 50 microns to 3 mm the controller 22 has a high speed circuit that compares a signal from the photodetector 24 to a target power and uses this comparison to determine the on and off time of each pulse the signal from photodetector 24 is compared to a target power to determine the on and off times the pulsed output 16 has a wavelength range of 520 to 615 nm the pulsed output 16 has a pulse on time of 25 microseconds to 10 000 microseconds and a pulse off time of 750 to 10 000 microseconds in this example laser system 10 is utilized to treat rpe capullochoris and choroids of the eye the pulsed output 16 is directed to a target site of the eye and a temperature rise at the target site is non additive from pulse to pulse the target site 40 is an area of 50 microns to 3 mm the train of pulses 16 is optimized to confine the thermal effect to the rpe target site without affecting the neurosensory retina of the eye an off time of the train of pulses is of sufficient duration to provide that the rpe target site has sufficient time to cool down from a delivery of a previous pulse before a next pulse is delivered to the rpe target site the pulsed output 16 has a wavelength.