PROBLEM TO BE SOLVED: To provide an ophthalmic laser treatment apparatus which solves at least one of the problems in the prior art. An ophthalmic laser treatment apparatus for irradiating a diseased part of a patient's eye with a treatment laser beam is provided with a plurality of optical fibers having different core diameters and a laser irradiation for irradiating the patient's eye with the treatment laser beam emitted from a light source. An optical system, an optical fiber selecting means for arranging any one of a plurality of optical fibers on the optical path of the laser irradiation optical system, and an emission end of the optical fiber provided on the laser irradiation optical system and arranged on the optical path. A projection magnification adjusting means for adjusting the projection magnification to the patient's eye, and a spot size generating means for controlling the optical fiber selecting means and the projection magnification adjusting means to generate a desired spot size. [Selection diagram] Figure 2【課題】従来技術における問題点の少なくとも１つを解決した眼科用レーザ治療装置を提供する。【解決手段】患者眼の患部に治療レーザ光を照射する眼科用レーザ治療装置は、コア径が異なる複数の光ファイバと、光源から出射された治療レーザ光を患者眼に照射するためのレーザ照射光学系と、複数の光ファイバのいずれか１つをレーザ照射光学系の光路上に配置する光ファイバ選択手段と、レーザ照射光学系に設けられ、光路上に配置された光ファイバの出射端の、患者眼への投影倍率を調節する投影倍率調節手段と、光ファイバ選択手段と投影倍率調節手段を制御して所期のスポットサイズを生成するスポットサイズ生成手段とを備えた。【選択図】図２
