Patent ID: 8361058

Claim:
A laser treatment apparatus for irradiating a laser beam to a patient's eye, comprising: an optical fiber; a main body having a base; a plurality of laser sources which emit treatment laser beams having different wavelengths, each laser source being detachable mounted on the base of the main body and connected to a power source through a connector; a light delivery optical system that delivers the treatment laser beams to the optical fiber, the light delivery optical system having a mirror for making the treatment laser beams from the laser sources coaxial with each other to deliver each treatment laser beam to the optical fiber; an input unit for inputting mounting information of each laser source, the mounting information including information indicating the laser source mounted on the base, of the mountable laser sources, and the input unit being able to change the mounting information when one of the plurality of laser sources is subsequently mounted to or demounted from the main body; an irradiation optical system configured to irradiate the treatment laser beam emerged from the optical fiber to the patient's eye; an irradiation condition setting unit including a display and being arranged to display a screen for setting an irradiation condition of the treatment laser beam on the display; a selection unit for selecting one of the laser sources for irradiating the treatment laser beam to the patient's eye, the selection unit being arranged to display the selectable laser beam based on the mounting information on the setting screen; and a control unit which checks a predetermined operation of each laser source by a sensor at the time of activation to determine whether an abnormality is present or not in each laser source, and displays an indication that the abnormality is present on a display, the control unit driving the selected laser source based on a trigger signal even when a part of the plurality of laser sources are not mounted on the base, and irradiating the laser beam according to the irradiation condition.