PROBLEM TO BE SOLVED: To facilitate the folding of an intraocular lens and improve the intracapsular stability of the intraocular lens to thereby suppress the occurrence of a secondary cataract.SOLUTION: Provided are an intraocular lens and its related techniques, which intraocular lens comprises a lens body having a rear surface disposed on a retinal side and a front surface disposed on a corneal side. The intraocular lens has a shape in which the entire rear surface protrudes in a shape of a truncated cone toward the retinal side in the direction of the optical axis with respect to the peripheral edge of the rear surface, and the front surface has any of the following shapes (i) to (iii). (i) The front surface is shaped in such a way as to begin to recess toward the retinal side in the direction of the optical axis when viewed toward the center from the peripheral edge of the front surface. (ii) The front surface is flat in a part thereof where the peripheral edge begins to go toward the center. (iii) The front surface is shaped in such a way as to begin to protrude toward the corneal side in the direction of the optical axis when viewed toward the center from the peripheral edge of the front surface, but a rate of rise of the protrusion from the peripheral edge of the front surface is less than a rate of rise of the protrusion from the peripheral edge of the rear surface.SELECTED DRAWING: Figure 2【課題】眼内レンズの折り畳みを容易としつつ、嚢内安定性を向上させ、後発白内障の発生を抑制する。【解決手段】網膜側に配される後面と角膜側に配される前面とを有するレンズ本体を備え、後面全体が、後面の周縁よりも、光軸方向において網膜側に向けて円錐台状に隆起した形状を有し、かつ、前面は以下の（ｉ）～（iii）のいずれかの形状を有する、眼内レンズおよびその関連技術を提供する。（ｉ）前面においては、前面の周縁から中心に向けて見たとき、光軸方向において網膜側へと陥凹し始める形状を有する。（ii）前面において、前面の周縁から中心への向かい始めの部分は平坦である。（iii）前面においては、前面の周縁から中心に向けて見たとき、光軸方向において角膜側へと隆起し始める形状を有するものの、前面の周縁からの隆起の立ち上がりは、後面の周縁からの隆起の立ち上がりに比べて小さい。【選択図】図２
