Photocoagulation apparatus

A photocoagulation apparatus for forming a coagulation spot in a part to be treated of a patient by irradiating the part with a treatment laser beam, the apparatus comprising:

• an input section provided with keys for setting at least either irradiation power or irradiation time of the treatment laser beam as a treatment parameter;
• an irradiation optical system including a laser oscillator which emits the treatment laser beam, for delivering the treatment laser beam emitted from the laser oscillator to the part to irradiate the part;
• a photographing optical system including a photoelectric image pick-up device, for photographing an area including the coagulation spot formed by irradiation of the treatment laser beam;
• a video image processing unit which processes an image of the area photographed by the photographing optical system to take out image data of the coagulation spot;
• a memory which stores image data of the coagulation spot in association with a corresponding treatment parameter as a reference;
• an analysis unit which compares colors between image data of the coagulation spot newly taken out by the video image processing unit and the image data of the coagulation spot stored as the reference;
• and
• a control unit which changes the treatment parameter based on a result of comparison by the analysis unit.