Provided is a laser treatment system that can appropriately emit laser light to a target location in a patient's eye. The laser treatment system according to an embodiment of the present invention includes the following: an emission optical system for emitting treatment-use laser light to a patient's eye； an interference optical system that separates the light from a light source into measurement light and reference light, and that guides, to a detection means, interference light which is obtained by superimposing the reference light and return light of the measurement light from the patient's eye； an optical system control means for controlling the emission optical system so that the treatment-use laser light is emitted to a plurality of positions on a pattern which was set beforehand, and for controlling the interference optical system so that measurement light is emitted to positions where the treatment-use laser light is being emitted and/or positions where the treatment-use laser light was emitted； and an emission-conditions control means for controlling in real-time the emission conditions of the treatment-use laser light on the basis of output from the detection means which detected interference light obtained by control according to the optical system control means.L'invention concerne un système de traitement au laser qui peut émettre de manière appropriée de la lumière laser vers un site cible dans l'œil d'un patient. Le système de traitement au laser selon un mode de réalisation de la présente invention comprend les éléments suivants : un système d'émission optique pour émettre de la lumière laser utilisée pour le traitement vers l'œil d'un patient； un système d'interférence optique qui sépare la lumière provenant d'une source lumineuse en lumière de mesure et lumière de référence et qui guide la lumière d'interférence qui est obtenue par la superposition de la lumière de référence et de la lumière de retour de la lumière de mesure provenant de l'œil du p
