PROBLEM TO BE SOLVED: To provide technology capable of preventing the circumferential section of the end surface of a tip end opening from being damaged when an intraocular lens is extruded from an insertion apparatus, even when an insertion tube of the intraocular lens insertion apparatus is further reduced in size.SOLUTION: In the intraocular lens insertion apparatus, the end surface of a tip end opening 10j in a tip end section 10a of an insertion tube is an inclined surface that is inclined with respect to a surface M perpendicular to a central axis L of the insertion tube, and the angle of inclination, with respect to the surface M perpendicular to the central axis L of the insertion tube, of the end surface of the tip end opening is larger toward a base end section 101 than toward a tip end section 100. In this apparatus, a predetermined region of the circumferential section toward the base end section 101 of the end surface of the tip end opening 10j has a curved shape that protrudes toward the outside, and has radius of curvature R4 that is equal to or less than the radius of curvature of another region of the circumferential section.【課題】眼内レンズの挿入器具の挿入筒部がより小型化した場合でも、眼内レンズを挿入器具から押し出す際に、先端開口端面の周縁部が破損することを抑制できる技術を提供する。【解決手段】挿入筒部の先端部１０ａにおける先端開口部１０ｊの端面を挿入筒部の中心軸Ｌに直交する面Ｍに対して傾斜した傾斜面とすると共に、先端開口端面の挿入筒部の中心軸Ｌに直交する面Ｍに対する傾斜角度を先端部１００側よりも基端部１０１側において大きく形成した眼内レンズの挿入器具であって、先端開口部１０ｊの端面の基端部１０１側における周縁部の所定領域における形状を、外側方向に膨らみを持つ曲線形状し、その曲率半径Ｒ４を、前記周縁部における他の領域の曲率半径以下とした。【選択図】図１１
