Provided is an intraocular lens insertion instrument that reduces the stress on ocular tissues and enables stable insertion of an intraocular lens. This intraocular lens insertion instrument has: a substantially-cylindrical insertion member which is to be inserted inside an eye； an opening which is provided to the leading end of the insertion member and through which an intraocular lens is injected into the eye； and an intraocular lens pressing member which pushes the intraocular lens so as to be moved within the insertion member and which injects the intraocular lens into the eye through the opening, wherein the opening direction of the opening is slanted with respect to the extension direction of the insertion member, a recess of a prescribed depth extending in the extension direction is provided to an outer peripheral surface of the insertion member at the insertion member rear end side of the opening, and when the insertion member is inserted in the eye and when the intraocular lens is moved within the insertion member, the recess undergoes elastic deformation causing the opening to expand or contract.為了提供一種人工水晶體植入器具，能減輕對於眼組織的負擔而穩定地進行人工水晶體的植入。 人工水晶體植入器具係具有插入構件、開口部及人工水晶體推出構件，插入構件，是插入眼內且呈大致筒狀；述開口部，是設置在插入構件的前端且用於將人工水晶體射入眼內；人工水晶體推出構件，是將人工水晶體推壓讓其在插入構件內移動，而使人工水晶體從開口部往眼內射出；開口部之開口方向，相對於插入構件的延伸方向是傾斜的，在開口部之插入構件後端側，將朝延伸方向延伸之既定深度的凹部設置於插入構件的外周面，當插入構件插入眼內時以及人工水晶體在插入構件內移動時，利用凹部的彈性變形而使開口部擴大縮小。
